CAN COMMUNICATION SYSTEM(for LHD) DIAGNOSIS SYSTEM

ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM

1. V Bus

   
   

   1. ECM

   2. Brake actuator assembly (skid control ECU)

   3. Spiral with sensor cable sub-assembly (steering angle sensor)*7

   4. Air conditioning amplifier assembly

   5. Airbag sensor assembly

   6. Certification ECU (smart key ECU assembly)*1

   7. Navigation receiver assembly*2

   8. Radio and display receiver assembly*3

   9. Headlight leveling ECU assembly*4

   10. Multiplex network door ECU*5

   11. 4 wheel drive control ECU*6

   12. Telematics transceiver*8

   13. Combination meter assembly

       
       

       • *1: w/ Smart Entry and Start System

       • *2: w/ Navigation System

       • *3: w/ Audio and Visual System

       • *4: for LED Headlight

       • *5: w/ Back Door Closer System

       • *6: for 4WD

       • *7: w/ VSC

       • *8: w/ Telematics Transceiver

CAN BUS CHECK

1. Using the GTS, select CAN Bus Check screen.

   Note

   
   

   • It may be possible to select buses that do not have ECUs or sensors from the bus selection pull-down menu. This is not a malfunction. (This occurs when optional devices are not on a sub bus that is monitored by a gateway function equipped ECU.)

   • In the bus selection pull down menu, all buses applicable to the model are displayed (e.g. LIN communication buses are also displayed). Therefore, refer to the wiring diagrams to check the names of sub buses for CAN communication.

     Click here

   Tech Tips

   Different connection statuses are indicated by the background color of ECUs and sensors that are displayed.

   Explanation of CAN Bus Check Screen

   Bus Type	Background Color	Connection Status
   V Bus	White	Communication has been normal since the start of the CAN bus check.
   	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
   	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub bus (gateway function equipped ECU that does not have history of connected ECUs)*2	White	Communication has been normal since the start of the CAN bus check.
   	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
   	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub bus (gateway function equipped ECU that has history of connected ECUs)*3	White	Communication has been normal since the start of the CAN bus check.
   	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
   	Red	Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Either of the following: If a gateway function equipped ECU cannot communicate, the sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed.

   Tech Tips

   
   

   • Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check.

   • *2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it.

   • *3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it.

   • If none of the connected ECUs are displayed, or there is no response from the vehicle to the GTS, check the DLC3 branch and the V bus main wires for a malfunction.

2. Observe the connection response screen for approximately 2 minutes to check for a change in connection status of the connected ECUs and sensors.

   Tech Tips

   
   

   • If an open occurs in one of the lines of a CAN branch (except DLC3), output from the other branch line (the line that is not open) will be unstable and it may interfere with the response (display) of other ECUs and sensors.

   • If the connection status changes during the inspection, repair the open in the branch line of the ECU or sensor that does not respond (is not detected) and then perform the CAN bus check again.

HOW TO INTERPRET CAN BUS CHECK SCREEN

1. When a communication stop is currently occurring, the probable malfunctioning part can be determined from the CAN bus check and by using the following methods.

   Note

   The following CAN bus wiring diagram is provided only as an example. This wiring diagram is different from the actual wiring diagram for this vehicle.

   Tech Tips

   
   

   • When a communication stop is currently occurring, it is easier to determine the probable malfunctioning part from the CAN bus check rather than from communication DTCs.

   • Wait for approximately 2 minutes after turning the ignition switch ON (or simulate the driving conditions that enable the malfunction to be reproduced) and select the CAN bus check. Then observe the communication status of each ECU on the screen.

2. If a communication error of only 1 ECU or sensor is indicated on the CAN Bus Check screen, a communication stop of the ECU or sensor is suspected.

   Example: Open in both CAN branch wires of ECU B on the V bus

   

   *a	V Bus	*b	Sub bus
   *c	Terminating Resistor	*d	Location of malfunction
   *e	Not displayed or background color changes to red or yellow	*f	CAN Bus Check screen

   Tech Tips

   When there are communication stops, ECUs are present in the vehicle even though they are not displayed on the CAN Bus Check screen.

3. 

   *a	Background color periodically changes to yellow or red
   *b	Not displayed or background color is yellow or red
   *c	Not displayed

   If communication errors for multiple ECUs or sensors are indicated on the CAN Bus Check screen, then a communication stop of the ECU or sensor that shows a more serious communication stop (an ECU or a sensor which is not displayed) is suspected.

   Example: Open in a CAN branch wire for ECU D on the V bus

   Explanation of CAN Bus Check Screen

   Bus Type	Background Color	Connection Status
   V Bus	White	Communication has been normal since the start of the CAN bus check.
   	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
   	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub bus (gateway function equipped ECU that does not have history of connected ECUs)*2	White	Communication has been normal since the start of the CAN bus check.
   	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
   	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub bus (gateway function equipped ECU that has history of connected ECUs)*3	White	Communication has been normal since the start of the CAN bus check.
   	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
   	Red	Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Either of the following: If a gateway function equipped ECU cannot communicate, sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed.

   Tech Tips

   
   

   • Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen.

   • *2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it.

   • *3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it.

   • The example of the CAN Bus Check screen in the illustration shows the result of electrical noise on the CAN bus which is caused by an open in a CAN branch wire of ECU D (output from the other branch line is unstable) and the communication of ECU C is also unstable. In addition, in this example, ECU C is equipped with a gateway function. Therefore, communication is also unstable between the sub bus ECUs of ECU C and the V bus.

   • The example in the illustration shows that ECU D is not displayed on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of ECU D is suspected.

4. 

   *a	Not displayed or background color changes to red

   If a communication error is indicated on both the V bus and sub bus on the CAN Bus Check screen, suspect any communication stop displayed for the V bus first.

   Example: Open in both CAN branch wires of ECU C on the V bus

   Tech Tips

   
   

   • In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the V bus after connecting the GTS to the DLC3. As for sub buses, it is possible to confirm which sub bus connected ECUs can communicate with a gateway function equipped ECU on the V bus.

   • If a gateway function equipped ECU has a communication error, ECUs connected to the gateway function equipped ECU are also affected, and communication stops will be indicated.

   • The CAN Bus Check screen in the illustration shows that ECU C has a gateway function and a communication stop in ECU C is suspected.

5. 

   *a	Background color changes to yellow or red

   If the CAN Bus Check screen indicates a communication stop only in the sub bus, a communication stop in the sub bus is suspected.

   Example: Open in both CAN branch wires of ECU G on the sub bus

   Tech Tips

   
   

   • A communication error in a sub bus does not affect the V bus or other buses.

   • When a gateway function equipped ECU has memorized the ECUs that are connected to the sub bus, if any of the ECUs connected to the gateway function equipped ECU has a communication error, the background color changes to yellow or red. (The displayed name will not disappear.)

6. If both of the V bus main wires are open, ECUs or sensors that are located farther away from the DLC3 than the open part will be displayed as a communication stop on the CAN Bus Check screen.

   (In this case, ECU A and B are not displayed or their background color changes to red.)

   

   *a	V Bus	*b	Sub Bus
   *c	Terminating Resistor	*d	Location of malfunction
   *e	Not displayed or background color is red	*f	CAN Bus Check screen

   Tech Tips

   If a communication error occurs in an ECU, it is not displayed on the CAN Bus Check screen even though the ECU is present.

7. If both of the sub bus main wires are open, ECUs that are located farther away from the gateway function equipped ECU than the open part will be displayed as a communication stop on the CAN Bus Check screen.

   (In this case, ECU I and J are not displayed or their background color changes to red.)

   

   *a	V Bus	*b	Sub Bus
   *c	Terminating Resistor	*d	Location of malfunction
   *e	Not displayed or background color is red	*f	CAN Bus Check screen
   *g	Gateway function equipped ECU	-	-

8. 

   *a	When any of the following malfunctions occur on the V bus
   *b	When any of the following malfunctions occur on a sub bus
   *c	Not displayed

   When any of the following malfunctions occur, CAN communication cannot be established and almost all ECUs and sensors on the bus show a communication error on the CAN Bus Check screen.

   Details of Malfunction

   Short between CAN wires (CANH and CANL)

   Short between a CAN wire (CANH or CANL) and +B

   Short between a CAN wire (CANH or CANL) and ground

   Open in a CAN main wire

   Tech Tips

   
   

   • When a malfunction occurs on the V bus, almost all ECUs and sensors on the V bus and sub bus indicate a communication error (almost all ECUs are not displayed). As communication with the gateway function equipped ECU that is connected to the V bus stops, communication from the ECUs connected to the sub bus that is monitored by the gateway function equipped ECU also stops (these ECUs are not displayed).

   • When a malfunction occurs in a sub bus, almost all ECUs connected to the sub bus indicate a communication error.

   • A communication error in a sub bus does not affect the V bus or other buses.

   • The malfunctioning part can be determined by checking for a short circuit between CAN bus lines or between a CAN bus line and ground or +B short using an electrical tester.

HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U)

CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION

1. The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle.

   Tech Tips

   The names of ECUs and sensors shown on the GTS display may differ from those shown in the DTC Table by ECU section that follows.

   ECU/Sensor Name	GTS Display	Installed on
   ECM	ECM (Engine)	All vehicles
   Brake actuator assembly (skid control ECU)	Skid Control (ABS/VSC/TRAC)	All vehicles
   Spiral with sensor cable sub-assembly (steering angle sensor)	Spiral cable (Steering Angle Sensor)	Vehicles with a VSC
   Air conditioning amplifier assembly	Air Conditioning Amplifier	All vehicles
   Airbag sensor assembly	Airbag	All vehicles
   Certification ECU (smart key ECU assembly)	Certification (Smart)	Vehicles with a smart entry and start system
   4 wheel drive control ECU	Four Wheel Drive Control	Vehicles with a 4WD
   Navigation receiver assembly	Display and Navigation (AVN1)	Vehicles with a navigation system
   Radio and display receiver assembly	Display and Navigation (AVN1)	Vehicles with an audio and visual system
   Headlight leveling ECU assembly	Headlight swivel (AFS)	Vehicles with a LED headlight
   Multiplex network door ECU	Back Door	Vehicles with a back door closer system
   Combination meter assembly	Combination Meter	All vehicles
   Telematics transceiver	DCM	Vehicles with a telematics transceiver

DTC TABLE BY ECU

1. ECM (w/ Cruise Control System)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Powertrain > Cruise Control > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0122	Lost Communication with Vehicle Dynamics Control Module	The ECM does not receive data from the brake actuator assembly (skid control ECU) for 2.5 seconds.	All conditions are met: 1 second or more elapses after turning the ignition switch to ON. The cruise control switch is on The vehicle speed is 40 km/h (25 mph) or more. The ECM power supply voltage is 10.5 V or higher.	Allow the cruise control system to operate for 3.5 seconds or more.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

2. BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Chassis > ABS/VSC/TRC > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0073	Control Module Communication Bus Off	Either condition is met: The response sent to the brake actuator assembly (skid control ECU) from the airbag sensor assembly is invalid for 1 second or more. The following condition occurs 10 times consecutively within 60 seconds: The response sent to the brake actuator assembly (skid control ECU) from the airbag sensor assembly is invalid at least once within 5 seconds. The brake actuator assembly (skid control ECU) cannot send or receive data (the bus is off) 10 times consecutively.	Both conditions are met: 1 second or more elapses after turning the ignition switch to ON. The brake actuator assembly (skid control ECU) power supply voltage is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 60 seconds.	ABS indicator light illuminates. SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0073	Control Module Communication Bus Off	Either condition is met: The response sent to the brake actuator assembly (skid control ECU) from the spiral with sensor cable sub-assembly (steering angle sensor) is invalid for 1 second or more. The following condition occurs 10 times consecutively within 60 seconds: The response sent to the brake actuator assembly (skid control ECU) from the spiral with sensor cable sub-assembly (steering angle sensor) is invalid at least once within 5 seconds. The brake actuator assembly (skid control ECU) cannot send or receive data (the bus is off) 10 times consecutively.	Both conditions are met: 1 second or more elapses after turning the ignition switch to ON. The brake actuator assembly (skid control ECU) power supply voltage is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 60 seconds.	ABS indicator light illuminates. SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0100	Lost Communication With ECM/PCM "A"	The brake actuator assembly (skid control ECU) is unable to receive certain data from the ECM for 2 seconds or more.	All conditions are met: 1 second or more elapses after turning the ignition switch to ON. The vehicle speed is 15 km/h (9 mph) or more. The brake actuator assembly (skid control ECU) power supply voltage is between 10 and 17.4 V.	Drive the vehicle for 3 seconds at a speed of 15 km/h (9 mph) or more.	SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0114	Lost Communication With Four-Wheel Drive Clutch Control Module	The brake actuator assembly (skid control ECU) is unable to receive certain data from the 4 wheel drive control ECU for 1.2 seconds or more.	Both conditions are met: 1 second or more elapses after turning the ignition switch to ON. The brake actuator assembly (skid control ECU) power supply voltage is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 2.2 seconds.	ABS indicator light illuminates. SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0124	Lost Communication With Lateral Acceleration Sensor Module	Either condition is met: The brake actuator assembly (skid control ECU) is unable to receive certain data from the airbag sensor assembly for 1 second or more. The following condition occurs 10 times or more consecutively within 60 seconds: The brake actuator assembly (skid control ECU) is unable to receive certain data from the airbag sensor assembly at least once within 5 seconds.	Both conditions are met: 1 second or more elapses after turning the ignition switch to ON. The brake actuator assembly (skid control ECU) power supply voltage is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 60 seconds.	ABS indicator light illuminates. SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0126	Lost Communication With Steering Angle Sensor Module	Either condition is met: The brake actuator assembly (skid control ECU) is unable to receive certain data from the spiral with sensor cable sub-assembly (steering angle sensor) for 1 second or more. The following condition occurs 10 times or more consecutively within 60 seconds: The brake actuator assembly (skid control ECU) is unable to receive certain data from the spiral with sensor cable sub-assembly (steering angle sensor) at least once within 5 seconds.	Both conditions are met: 1 second or more elapses after turning the ignition switch to ON. The brake actuator assembly (skid control ECU) power supply voltage is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 60 seconds.	SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.

3. AIR CONDITIONING AMPLIFIER ASSEMBLY

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Body Electrical > Air Conditioner > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0100	Lost Communication With ECM/PCM "A"	The air conditioning amplifier assembly is unable to receive certain data from the ECM for 5 seconds or more.	Both conditions are met: The ignition switch to ON. The air conditioning amplifier assembly power supply voltage is 10 V or higher.	Turn the ignition switch to ON and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.
   U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	The air conditioning amplifier assembly is unable to receive certain data from the combination meter assembly for 5 seconds or more.	Both conditions are met: The ignition switch to ON. The air conditioning amplifier assembly power supply voltage is 10 V or higher.	Turn the ignition switch to ON and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.

4. COMBINATION METER ASSEMBLY

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Body Electrical > Combination Meter > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Check Procedure	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0100	Lost Communication with ECM/PCM "A"	The combination meter assembly is unable to receive certain data from the ECM for 2 seconds or more.	Both conditions are met: The ignition switch to ON. The voltage at the IG power supply terminal of the combination meter assembly is 11.5 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	MIL illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0129	Lost Communication with Brake System Control Module	Either condition is met: The combination meter assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) for 2 seconds or more. The combination meter assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) for 3 seconds or more.	Both conditions are met: The ignition switch to ON. The voltage at the IG power supply terminal of the combination meter assembly is 11.5 V or higher.	Turn the ignition switch to ON and wait at least 3 seconds.	SLIP indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
   U0151	Lost Communication with Restraints Control Module	The combination meter assembly is unable to receive certain data from the airbag sensor assembly for 10 seconds or more.	Both conditions are met: The ignition switch to ON. The voltage at the IG power supply terminal of the combination meter assembly is 11.5 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	The SRS warning light illuminates.	The DTC remains stored until it is cleared using the GTS.

5. NAVIGATION RECEIVER ASSEMBLY (w/ Navigation System)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Body Electrical > Navigation System > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0073	Sending Malfunction (Navigation to APGS)	The navigation receiver assembly is unable to send or receive data 10 times consecutively.	-	Turn the ignition switch to ON and wait at least 1 second.	-	The DTC remains stored until it is cleared using the GTS.
   U0100	Engine ECU Communication	Either condition is met: The navigation receiver assembly is unable to receive certain data from the ECM for 4 seconds or more. The navigation receiver assembly is unable to receive certain data from the ECM for 12 seconds or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The navigation receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
   U0129	VSC(ECB*)ECU Communication	The navigation receiver assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) for 1 second or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The navigation receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	-	The DTC remains stored until it is cleared using the GTS.
   U0155	Meter ECU Communication	Either condition is met: The navigation receiver assembly is unable to receive certain data from the combination meter assembly for 10 seconds or more. The navigation receiver assembly is unable to receive certain data from the combination meter assembly for 30 seconds or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The navigation receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 31 seconds.	-	The DTC remains stored until it is cleared using the GTS.

   ECB*: Electronically Controlled Brake System

6. RADIO AND DISPLAY RECEIVER ASSEMBLY (w/ Audio and Visual System)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Body Electrical > Navigation System > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0073	Sending Malfunction (Navigation to APGS)	The radio and display receiver assembly is unable to send or receive data 10 times consecutively.	-	Turn the ignition switch to ON and wait at least 1 second.	-	The DTC remains stored until it is cleared using the GTS.
   U0100	Engine ECU Communication	Either condition is met: The radio and display receiver assembly is unable to receive certain data from the ECM for 4 seconds or more. The radio and display receiver assembly is unable to receive certain data from the ECM for 12 seconds or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The radio and display receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
   U0129	VSC(ECB*)ECU Communication	The radio and display receiver assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) for 1 second or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The radio and display receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	-	The DTC remains stored until it is cleared using the GTS.
   U0155	Meter ECU Communication	Either condition is met: The radio and display receiver assembly is unable to receive certain data from the combination meter assembly for 10 seconds or more. The radio and display receiver assembly is unable to receive certain data from the combination meter assembly for 30 seconds or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The radio and display receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 31 seconds.	-	The DTC remains stored until it is cleared using the GTS.
   U0164	Air Conditioner ECU Communication	The radio and display receiver assembly is unable to receive certain data from the air conditioning amplifier assembly for 10 seconds or more.	Both conditions are met: 1 second or more elapse after turning the ignition switch to ON. The radio and display receiver assembly power supply voltage is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 11 seconds.	-	The DTC remains stored until it is cleared using the GTS.

   ECB*: Electronically Controlled Brake System

7. 4 WHEEL DRIVE CONTROL ECU (for 4WD)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Powertrain > Four Wheel Drive > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0100	Lost Communication with ECM/PCM "A"	The 4 wheel drive control ECU is unable to receive certain data from the ECM for 1.85 seconds or more.	Both conditions are met: 3 seconds or more elapse after turning the ignition switch to ON. The 4 wheel drive control ECU power supply voltage is 10 V or higher.	Turn the ignition switch to ON and wait at least 8.12 seconds.	The low speed four-wheel drive indicator light blinks. The message is displayed on multi-information display.	The DTC remains stored until it is cleared using the GTS.
   U0122	Lost Communication With Vehicle Dynamics Control Module	The 4 wheel drive control ECU is unable to receive certain data from the brake actuator assembly (skid control ECU) for 0.72 seconds or more.	Both conditions are met: 3 seconds or more elapse after turning the ignition switch to ON. The 4 wheel drive control ECU power supply voltage is 10 V or higher.	Turn the ignition switch to ON and wait at least 3.72 seconds.	The low speed four-wheel drive indicator light blinks. The rear differential lock indicator blinks. The message is displayed on multi-information display.	The DTC remains stored until it is cleared using the GTS.

8. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Entry and Start System)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Body Electrical > Entry&Start > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0100	Lost Communication With ECM/PCM "A"	The certification ECU (smart key ECU assembly) is unable to receive certain data from the ECM for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The certification ECU (smart key ECU assembly) power supply voltage is 10 V or higher.	Wait 20 seconds after turning the ignition switch to ACC or ON.	-	The DTC remains stored until it is cleared using the GTS.
   U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The certification ECU (smart key ECU assembly) is unable to receive certain data from the combination meter assembly for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The certification ECU (smart key ECU assembly) power supply voltage is 10 V or higher.	Wait 20 seconds after turning the ignition switch to ACC or ON.	-	The DTC remains stored until it is cleared using the GTS.

9. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Entry and Start System)

   Tech Tips

   DTC communication uses the CAN communication system.

   
   Body Electrical > Power Source Control > Trouble Codes

   DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0100	ECM Communication	The certification ECU (smart key ECU assembly) is unable to receive certain data from the ECM for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The certification ECU (smart key ECU assembly) power supply voltage is 10 V or higher.	Wait 20 seconds after turning the ignition switch to ACC or ON.	-	The DTC remains stored until it is cleared using the GTS.
   U0129	Vehicle Speed Signal Communication	The certification ECU (smart key ECU assembly) is unable to receive certain data from the brake actuator assembly (skid control ECU) for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The certification ECU (smart key ECU assembly) power supply voltage is 10 V or higher.	Wait 20 seconds after turning the ignition switch to ACC or ON.	-	The DTC remains stored until it is cleared using the GTS.
   U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The certification ECU (smart key ECU assembly) is unable to receive certain data from the combination meter assembly for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The certification ECU (smart key ECU assembly) power supply voltage is 10 V or higher.	Wait 20 seconds after turning the ignition switch to ACC or ON.	-	The DTC remains stored until it is cleared using the GTS.

10. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Entry and Start System)

    Tech Tips

    DTC communication uses the CAN communication system.

    
    Body Electrical > Starting Control > Trouble Codes

    DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0100	Lost Communication with ECM/PCM "A"	The certification ECU (smart key ECU assembly) is unable to receive certain data from the ECM for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The certification ECU (smart key ECU assembly) power supply voltage is 10 V or higher.	Wait 20 seconds after turning the ignition switch to ACC or ON.	-	The DTC remains stored until it is cleared using the GTS.

11. HEADLIGHT LEVELING ECU ASSEMBLY (for LED Headlight)

    Tech Tips

    DTC communication uses the CAN communication system.

    
    Body Electrical > HL AutoLeveling > Trouble Codes

    DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0100	Lost Communication with ECM/PCM "A"	The headlight leveling ECU assembly is unable to receive certain data from the ECM for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after turning the ignition switch to ON. The headlight leveling ECU assembly power supply voltage is 9.5 V or higher	Turn the ignition switch to ON and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U0129	Lost Communication with Brake System Control Module	The headlight leveling ECU assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after turning the ignition switch to ON. The headlight leveling ECU assembly power supply voltage is 9.5 V or higher	Turn the ignition switch to ON and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U0142	Lost Communication with Body Control Module "B"	The headlight leveling ECU assembly is unable to receive certain data from the combination meter assembly for 10 seconds or more.	Both conditions are met: 10 seconds or more elapse after turning the ignition switch to ON. The headlight leveling ECU assembly power supply voltage is 9.5 V or higher	Turn the ignition switch to ON and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U1000*	CAN Communication Failure(Message Registry)	CAN communication malfunction (message register)	Turn the ignition switch to ON.	Turn the ignition switch to ON.	-	The DTC remains stored until it is cleared using the GTS.

    *: Refer to the Lighting System.

    Click here

12. MULTIPLEX NETWORK DOOR ECU (w/ Back Door Closer System)

    Tech Tips

    DTC communication uses the CAN communication system.

    
    Body Electrical > Back Door > Trouble Codes

    DTC No.	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0100	Lost Communication with ECM/PCM "A"	The multiplex network door ECU is unable to receive certain data from the ECM for 10 seconds or more.	Both conditions are met: The ignition switch ON. The multiplex network door ECU power supply voltage is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U0122	Lost Communication with Vehicle Dynamics Control Module	The multiplex network door ECU is unable to receive certain data from the brake actuator assembly (skid control ECU) for 10 seconds or more.	Both conditions are met: The ignition switch ON. The multiplex network door ECU power supply voltage is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The multiplex network door ECU is unable to receive certain data from the combination meter assembly for 10 seconds or more.	Both conditions are met: The ignition switch ON. The multiplex network door ECU power supply voltage is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U0327	Lost Communication with Vehicle Security Control Module	The multiplex network door ECU is unable to receive certain data from the certification ECU (smart key ECU assembly) for 10 seconds or more.	Both conditions are met: The ignition switch ON. The multiplex network door ECU power supply voltage is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
    U1117	Lost Communication with Accessory Gateway	The multiplex network door ECU is unable to receive certain data from the bus buffer ECU for 10 seconds or more.	Both conditions are met: The ignition switch ON. The multiplex network door ECU power supply voltage is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.

    ECB*: Electronically Controlled Brake System

13. TELEMATICS TRANSCEIVER (w/ Telematics Transceiver) / GTS Display "Telematics"

    Tech Tips

    DTC communication uses the CAN communication system.

    
    Body Electrical > Telematics > Trouble Codes

    DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0100	Lost Communication with ECM/PCM "A"	The telematics transceiver is unable to receive certain data from the ECM for approximately 5 seconds or more.	10 seconds or more elapse after turning the ignition switch to ON.	Turn the ignition switch to ON and wait at least approximately 15 seconds.	-	The DTC remains stored until it is cleared using the GTS.

14. AIRBAG SENSOR ASSEMBLY

    Tech Tips

    The airbag sensor assembly is connected to the CAN communication system but CAN communication DTCs are not stored.

15. SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) (w/ VSC)

    Tech Tips

    The spiral with sensor cable sub-assembly (steering angle sensor) is connected to the CAN communication system but CAN communication DTCs are not stored.

16. Regarding the past communication error of ECUs and sensors connected to the V bus (in this case, normal was displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN branch that had a malfunction can be determined based on the following DTC combination table.

DTC COMBINATION TABLE (OPEN IN CAN BRANCH OF V BUS, PAST COMMUNICATION ERROR)

1. Regarding the past communication error of ECUs and sensors connected to the V bus (in this case, normal was displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN branch that had a malfunction can be determined based on the following DTC combination table.

   Tech Tips

   
   

   • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.

   • Regarding an open in a CAN branch and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN branch does not respond (the ECU or sensor name will not be displayed on the screen).

   • If an open in a CAN main bus wire, a short between the CAN bus lines (CANH and CANL) or a +B or ground short in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 5 to 7) first.

   • If an open occurs in just one of the lines of a CAN branch, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.

   • ○: DTC is output.

   • X: DTC is likely output.

   • ▲: DTC is unlikely output.

   • -: DTC is not output.

   Output from	Output DTC	Trouble Mode (Open in one side of CAN branch wire)
   		V Bus
   		Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	Navigation ECU Communication Stop Mode Click here	AFS ECU Communication Stop Mode Click here
   ECM	U0122	▲	▲	▲	▲
   Air Conditioning Amplifier Assembly	U0100	▲	X	▲	▲
   	U0155	▲	X	▲	▲
   Headlight Leveling ECU Assembly	U0100	▲	▲	▲	X
   	U0129	▲	▲	▲	X
   Navigation Receiver Assembly	U0100	▲	▲	X	▲
   	U0129	▲	▲	X	▲
   	U0155	▲	▲	X	▲
   Radio and Display Receiver Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   	U0164	▲	X	▲	▲
   4 Wheel Drive Control ECU	U0100	▲	▲	▲	▲
   	U0122	▲	▲	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	▲	▲	▲	▲
   Combination Meter Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   	U0151	X	▲	▲	▲
   Brake Actuator Assembly	U0100	▲	▲	▲	▲
   	U0114	▲	▲	▲	▲
   	U0124	X	▲	▲	▲
   	U0126	▲	▲	▲	▲
   Multiplex Network Door ECU	U0100	▲	▲	▲	▲
   	U0122	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   	U0327	▲	▲	▲	▲
   	U1117	▲	▲	▲	▲
   Telematics Transceiver	U0100	▲	▲	▲	▲
   Airbag Sensor Assembly	-	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in one side of CAN branch wire)
   		V Bus
   		Steering Angle Sensor Communication Stop Mode Click here	Skid Control ECU Communication Stop Mode Click here	Audio Receiver Assembly Communication Stop Mode Click here	DLC3
   ECM	U0122	▲	X	▲	▲
   Air Conditioning Amplifier Assembly	U0100	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   Headlight Leveling ECU Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	X	▲	▲
   Navigation Receiver Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	X	▲	▲
   	U0155	▲	▲	▲	▲
   Radio and Display Receiver Assembly	U0100	▲	▲	X	▲
   	U0129	▲	X	X	▲
   	U0155	▲	▲	X	▲
   	U0164	▲	▲	X	▲
   4 Wheel Drive Control ECU	U0100	▲	▲	▲	▲
   	U0122	▲	X	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	▲	▲	▲	▲
   	U0129	▲	X	▲	▲
   	U0155	▲	▲	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	▲	▲	▲	▲
   Combination Meter Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	X	▲	▲
   	U0151	▲	▲	▲	▲
   Brake Actuator Assembly	U0100	▲	X	▲	▲
   	U0114	▲	X	▲	▲
   	U0124	▲	X	▲	▲
   	U0126	X	X	▲	▲
   Multiplex Network Door ECU	U0100	▲	▲	▲	▲
   	U0122	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   	U0327	▲	▲	▲	▲
   	U1117	▲	▲	▲	▲
   Telematics Transceiver	U0100	▲	▲	▲	▲
   Airbag Sensor Assembly	-	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in one side of CAN branch wire)
   		V Bus
   		4WD Control ECU Communication Stop Mode Click here	Certification ECU Communication Stop Mode Click here	Power Back Door ECU Communication Stop Mode Click here	DCM Communication Stop Mode Click here
   ECM	U0122	▲	▲	▲	▲
   Air Conditioning Amplifier Assembly	U0100	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   Headlight Leveling ECU Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   Navigation Receiver Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   Radio and Display Receiver Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   	U0155	▲	▲	▲	▲
   	U0164	▲	▲	▲	▲
   4 Wheel Drive Control ECU	U0100	X	▲	▲	▲
   	U0122	X	▲	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	▲	X	▲	▲
   	U0155	▲	X	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	▲	X	▲	▲
   	U0129	▲	X	▲	▲
   	U0155	▲	X	▲	▲
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	▲	X	▲	▲
   Combination Meter Assembly	U0100	▲	▲	▲	▲
   	U0129	▲	▲	▲	▲
   	U0151	▲	▲	▲	▲
   Brake Actuator Assembly	U0100	▲	▲	▲	▲
   	U0114	X	▲	▲	▲
   	U0124	▲	▲	▲	▲
   	U0126	▲	▲	▲	▲
   Multiplex Network Door ECU	U0100	▲	▲	X	▲
   	U0122	▲	▲	X	▲
   	U0155	▲	▲	X	▲
   	U0327	▲	X	X	▲
   	U1117	▲	▲	X	▲
   Telematics Transceiver	U0100	▲	▲	▲	X
   Airbag Sensor Assembly	-	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in CAN branch wire)
   		V Bus
   		Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	Navigation ECU Communication Stop Mode Click here	AFS ECU Communication Stop Mode Click here
   ECM	U0122	-	-	-	-
   Air Conditioning Amplifier Assembly	U0100	-	○	-	-
   	U0155	-	○	-	-
   Headlight Leveling ECU Assembly	U0100	-	-	-	○
   	U0129	-	-	-	○
   Navigation Receiver Assembly	U0100	-	-	○	-
   	U0129	-	-	○	-
   	U0155	-	-	○	-
   Radio and Display Receiver Assembly	U0100	-	-	-	-
   	U0129	-	-	-	-
   	U0155	-	-	-	-
   	U0164	-	○	-	-
   4 Wheel Drive Control ECU	U0100	-	-	-	-
   	U0122	-	-	-	-
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	-	-	-	-
   	U0155	-	-	-	-
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	-	-	-	-
   	U0129	-	-	-	-
   	U0155	-	-	-	-
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	-	-	-	-
   Combination Meter Assembly	U0100	-	-	-	-
   	U0129	-	-	-	-
   	U0151	○	-	-	-
   Brake Actuator Assembly	U0100	-	-	-	-
   	U0114	-	-	-	-
   	U0124	○	-	-	-
   	U0126	-	-	-	-
   Multiplex Network Door ECU	U0100	-	-	-	-
   	U0122	-	-	-	-
   	U0155	-	-	-	-
   	U0327	-	-	-	-
   	U1117	-	-	-	-
   Telematics Transceiver	U0100	-	-	-	-
   Airbag Sensor Assembly	-	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in CAN branch wire)
   		V Bus
   		Steering Angle Sensor Communication Stop Mode Click here	Skid Control ECU Communication Stop Mode Click here	Audio Receiver Assembly Communication Stop Mode Click here	DLC3
   ECM	U0122	-	○	-	-
   Air Conditioning Amplifier Assembly	U0100	-	-	-	-
   	U0155	-	-	-	-
   Headlight Leveling ECU Assembly	U0100	-	-	-	-
   	U0129	-	○	-	-
   Navigation Receiver Assembly	U0100	-	-	-	-
   	U0129	-	○	-	-
   	U0155	-	-	-	-
   Radio and Display Receiver Assembly	U0100	-	-	○	-
   	U0129	-	○	○	-
   	U0155	-	-	○	-
   	U0164	-	-	○	-
   4 Wheel Drive Control ECU	U0100	-	-	-	-
   	U0122	-	○	-	-
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	-	-	-	-
   	U0155	-	-	-	-
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	-	-	-	-
   	U0129	-	○	-	-
   	U0155	-	-	-	-
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	-	-	-	-
   Combination Meter Assembly	U0100	-	-	-	-
   	U0129	-	○	-	-
   	U0151	-	-	-	-
   Brake Actuator Assembly	U0100	-	○	-	-
   	U0114	-	○	-	-
   	U0124	-	○	-	-
   	U0126	○	○	-	-
   Multiplex Network Door ECU	U0100	-	-	-	-
   	U0122	-	-	-	-
   	U0155	-	-	-	-
   	U0327	-	-	-	-
   	U1117	-	-	-	-
   Telematics Transceiver	U0100	-	-	-	-
   Airbag Sensor Assembly	-	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in CAN branch wire)
   		V Bus
   		4WD Control ECU Communication Stop Mode Click here	Certification ECU Communication Stop Mode Click here	Power Back Door ECU Communication Stop Mode Click here	DCM Communication Stop Mode Click here
   ECM	U0122	-	-	-	-
   Air Conditioning Amplifier Assembly	U0100	-	-	-	-
   	U0155	-	-	-	-
   Headlight Leveling ECU Assembly	U0100	-	-	-	-
   	U0129	-	-	-	-
   Navigation Receiver Assembly	U0100	-	-	-	-
   	U0129	-	-	-	-
   	U0155	-	-	-	-
   Radio and Display Receiver Assembly	U0100	-	-	-	-
   	U0129	-	-	-	-
   	U0155	-	-	-	-
   	U0164	-	-	-	-
   4 Wheel Drive Control ECU	U0100	○	-	-	-
   	U0122	○	-	-	-
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	-	○	-	-
   	U0155	-	○	-	-
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	-	○	-	-
   	U0129	-	○	-	-
   	U0155	-	○	-	-
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	-	○	-	-
   Combination Meter Assembly	U0100	-	-	-	-
   	U0129	-	-	-	-
   	U0151	-	-	-	-
   Brake Actuator Assembly	U0100	-	-	-	-
   	U0114	○	-	-	-
   	U0124	-	-	-	-
   	U0126	-	-	-	-
   Multiplex Network Door ECU	U0100	-	-	○	-
   	U0122	-	-	○	-
   	U0155	-	-	○	-
   	U0327	-	○	○	-
   	U1117	-	-	○	-
   Telematics Transceiver	U0100	-	-	-	○
   Airbag Sensor Assembly	-	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in one side of CAN main bus wire)
   		V Bus
   		ECM Communication Stop Mode Click here	No. 1 CAN Junction Connector - No. 2 CAN Junction Connector	Combination Meter ECU Communication Stop Mode Click here
   ECM	U0122	X	X	▲
   Air Conditioning Amplifier Assembly	U0100	X	▲	▲
   	U0155	▲	X	X
   Headlight Leveling ECU Assembly	U0100	X	X	▲
   	U0129	▲	▲	▲
   Navigation Receiver Assembly	U0100	X	X	▲
   	U0129	▲	X	▲
   	U0129	▲	X	X
   Radio and Display Receiver Assembly	U0100	X	X	▲
   	U0129	▲	X	▲
   	U0155	▲	X	X
   	U0164	▲	▲	▲
   4 Wheel Drive Control ECU	U0100	X	▲	▲
   	U0122	▲	X	▲
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	X	X	▲
   	U0155	▲	▲	X
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	X	X	▲
   	U0129	▲	▲	▲
   	U0155	▲	▲	X
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	X	X	▲
   Combination Meter Assembly	U0100	X	X	X
   	U0129	▲	▲	X
   	U0151	▲	X	X
   Brake Actuator Assembly	U0100	X	X	▲
   	U0114	▲	X	▲
   	U0124	▲	X	▲
   	U0126	▲	▲	▲
   Multiplex Network Door ECU	U0100	X	X	▲
   	U0122	▲	▲	▲
   	U0155	▲	X	X
   	U0327	▲	▲	▲
   	U1117	▲	▲	▲
   Telematics Transceiver	U0100	X	▲	▲
   Airbag Sensor Assembly	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-

   Output from	Output DTC	Trouble Mode (Open in CAN main bus wire)
   		V Bus
   		ECM Communication Stop Mode Click here	No. 1 CAN Junction Connector - No. 2 CAN Junction Connector	Combination Meter ECU Communication Stop Mode Click here
   ECM	U0122	○	○	-
   Air Conditioning Amplifier Assembly	U0100	○	-	-
   	U0155	-	○	○
   Headlight Leveling ECU Assembly	U0100	○	○	-
   	U0129	-	-	-
   Navigation Receiver Assembly	U0100	○	○	-
   	U0129	-	○	-
   	U0155	-	○	○
   Radio and Display Receiver Assembly	U0100	○	○	-
   	U0129	-	○	-
   	U0155	-	○	○
   	U0164	-	-	-
   4 Wheel Drive Control ECU	U0100	○	-	-
   	U0122	-	○	-
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	○	○	-
   	U0155	-	-	○
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	○	○	-
   	U0129	-	-	-
   	U0155	-	-	○
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	○	○	-
   Combination Meter Assembly	U0100	○	○	○
   	U0129	-	-	○
   	U0151	-	○	○
   Brake Actuator Assembly	U0100	○	○	-
   	U0114	-	○	-
   	U0124	-	○	-
   	U0126	-	-	-
   Multiplex Network Door ECU	U0100	○	○	-
   	U0122	-	-	-
   	U0155	-	○	○
   	U0327	-	-	-
   	U1117	-	-	-
   Telematics Transceiver	U0100	○	-	-
   Airbag Sensor Assembly	-	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-	-

   Output from	Output DTC	Trouble Mode (Short)
   		V Bus
   		CANH - CANL	CANH - GND CANL - GND
   ECM	U0122	○	○
   Air Conditioning Amplifier Assembly	U0100	○	○
   	U0155	○	○
   Headlight Leveling ECU Assembly	U0100	○	○
   	U0129	○	○
   Navigation Receiver Assembly	U0100	○	○
   	U0129	○	○
   	U0155	○	○
   Radio and Display Receiver Assembly	U0100	○	○
   	U0129	○	○
   	U0155	○	○
   	U0164	○	○
   4 Wheel Drive Control ECU	U0100	○	○
   	U0122	○	○
   Certification ECU (Smart Key ECU Assembly) <Entry&Start>	U0100	○	○
   	U0155	○	○
   Certification ECU (Smart Key ECU Assembly) <Power Source Control>	U0100	○	○
   	U0129	○	○
   	U0155	○	○
   Certification ECU (Smart Key ECU Assembly) <Starting Control>	U0100	○	○
   Combination Meter Assembly	U0100	○	○
   	U0129	○	○
   	U0151	○	○
   Brake Actuator Assembly	U0100	○	○
   	U0114	○	○
   	U0124	○	○
   	U0126	○	○
   Multiplex Network Door ECU	U0100	○	○
   	U0122	○	○
   	U0155	○	○
   	U0327	○	○
   	U1117	○	○
   Telematics Transceiver	U0100	○	○
   Airbag Sensor Assembly	-	-	-
   Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)	-	-	-

CAN BUS WAVEFORMS

1. CAN bus waveforms (Group 1)

   
   
   1. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Normal waveform

   2. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Open in both of the lines (CANH and CANL) of a CAN branch

      Tech Tips

      
      

      • Waveforms (waveforms shown using dotted lines) are not output from an ECU or sensor connected to a CAN branch with an open circuit in both lines. (Waveforms from other ECUs or sensors are normal.)

      • Because this waveform is similar to a normal waveform, instead of using the waveform, the malfunctioning part can be narrowed down by performing a CAN bus check.

   3. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Short between the CAN bus lines (CANH and CANL)

      Tech Tips

      
      

      • Waveforms disappear.

      • If the malfunction is in an ECU, disconnecting the ECU will change the waveform. If the waveform does not change, a malfunction in the wire harness is suspected.

2. CAN bus waveforms (reference) (Group 2)

   Note

   The following CAN bus waveforms can be used only as reference. The actual measured waveform may differ significantly depending on the location of the open or short circuit.

   
   
   1. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Open in a CAN branch wire (CANH)

      Tech Tips

      
      

      • An abnormal waveform is output from an ECU with an open in one of its CAN branch wires. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.

      • Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch wire is disconnected.

   2. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Open in a CAN branch wire (CANL)

      Tech Tips

      
      

      • An abnormal waveform is output from an ECU with an open in one of its CAN branch wires. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.

      • Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch wire is disconnected.

   3. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Open in a CAN main wire (CANH)

      Tech Tips

      
      

      • Waveforms of ECUs or sensors that are closer to the DLC3 than the open part are almost normal.

      • Waveforms of ECUs or sensors that are on the opposite side of the DLC3 from the open part are abnormal.

      • An open in a CAN main wire can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch.

   4. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Short between a CAN bus line (CANH) and ground

      Tech Tips

      
      

      • Narrow down the shorted part by checking for waveform changes when disconnecting connector(s) from the CAN junction connector(s) or when disconnecting ECUs or sensors.

      • A short to ground in the CANH line can be confirmed by measuring the resistance between CANH and ground using an ohmmeter.

   5. 

      *a	1 V/DIV.
      *b	50 μs/DIV.

      Short between a CAN bus line (CANL) and ground

      Tech Tips

      
      

      • Narrow down the shorted part by checking for waveform changes when disconnecting connector(s) from the CAN junction connector(s) or when disconnecting ECUs or sensors.

      • A short to ground in the CANL line can be confirmed by measuring the resistance between CANL and ground using an ohmmeter.

DATA SENDING/RECEIVING TABLE

1. Data sending/receiving table

   Tech Tips

   If Data List items related to sent/received data are not displayed properly, the part for which communication is interrupted can be determined using the table below.

   Data content	Data Detected and Sent by	Data Received from (Can be Checked in Data List)	Data Received (Cannot be Checked in Data List)	Relevant Data List Item [Selected System]
   Engine speed	ECM	Brake actuator assembly (skid control ECU) Combination meter assembly	Air conditioning amplifier assembly 4 wheel drive control ECU Certification ECU (smart key ECU assembly) Airbag sensor assembly Headlight leveling ECU assembly Radio and display receiver assembly	Engine Speed [Engine] Engine Revolutions [ABS/VSC/TRC] Engine Rpm [Combination Meter]
   Engine coolant temperature	ECM	Air conditioning amplifier assembly Combination meter assembly	Certification ECU (smart key ECU assembly)	Coolant Temp [Engine] Coolant Temperature [Combination Meter] Engine Coolant Temp [Air Conditioner]
   Stop light switch	Brake actuator assembly (skid control ECU)	Certification ECU (smart key ECU assembly)	Airbag sensor assembly Multiplex network door ECU	Stop Light SW [ABS/VSC/TRC] Stop Light SW (ABS/VSC) [Stop and Start] Stop Light Switch1 [Power Source Control]
   Wheel speed signal	Brake actuator assembly (skid control ECU)	4 wheel drive control ECU	ECM Headlight leveling ECU assembly	FR Wheel Speed [ABS/VSC/TRC] FL Wheel Speed [ABS/VSC/TRC] RR Wheel Speed [ABS/VSC/TRC] RL Wheel Speed [ABS/VSC/TRC] FR Wheel Speed [Four Wheel Drive] FL Wheel Speed [Four Wheel Drive] RR Wheel Speed [Four Wheel Drive] RL Wheel Speed [Four Wheel Drive]
   Steering angle signal	Spiral with sensor cable sub-assembly (steering angle sensor)	Brake actuator assembly (skid control ECU) Headlight leveling ECU assembly	Airbag sensor assembly Radio and display receiver assembly	Steering Angle Sensor [ABS/VSC/TRC] Steering Angle [Stop and Start]
   Vehicle speed	Brake actuator assembly (skid control ECU)	ECM Combination meter assembly 4 wheel drive control ECU Radio and display receiver assembly	Airbag sensor assembly Telematics transceiver	Vehicle Speed [ABS/VSC/TRC] Vehicle Speed [Engine] Vehicle Speed Meter [Combination Meter] Vehicle Speed [Four Wheel Drive] Vehicle Speed [Navigation System]
   	Combination meter assembly*	-	Air conditioning amplifier assembly Certification ECU (smart key ECU assembly) Airbag sensor assembly Multiplex network door ECU	Vehicle Speed Meter [Combination Meter]
   Ambient temperature	Combination meter assembly	Air conditioning amplifier assembly	-	Ambient Temperature [Combination Meter] Ambient Temp Sensor [Air Conditioner]
   Door courtesy	Combination meter assembly	-	Certification ECU (smart key ECU assembly)	Driver Side Door [Combination Meter] Passenger Side Door [Combination Meter] Rear Left Side Door [Combination Meter] Rear Right Side Door [Combination Meter]
   Back door courtesy	Multiplex network door ECU	-	-	Courtesy SW [Back Door]

   *: The combination meter assembly receives a vehicle speed signal from the brake actuator assembly (skid control ECU) and sends the signal to other ECUs.

2. Details of relevant Data List items (Selected system: Engine)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Powertrain / Engine / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Powertrain > Engine > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Vehicle Speed	Vehicle speed	Min.: 0 km/h, Max.: 255 km/h	Actual vehicle speed	This is the current vehicle speed. The vehicle speed is detected using the wheel speed sensors. Vehicle speed data is delayed when it is displayed. Therefore, even if the vehicle speed listed in the freeze frame data is 0 km/h (0 mph), this does not always mean that the malfunction occurred when the vehicle was stopped.
      Engine Speed	Engine speed	Min.: 0 rpm, Max.: 6000 rpm	50 to 400 rpm: Cranking 800 to 900 rpm: Idling with warm engine	When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 or varies greatly from the actual engine speed.
      Coolant Temp	Engine coolant temperature	Min.: -40°C, Max.: 140°C	After warming up engine: 70 to 90°C (158 to 194°F)	If the value is -40°C (-40°F) or 140°C (284°F), the sensor circuit is open or shorted. After a long soak, the coolant temperature, intake air temperature and ambient temperature are approximately equal.

      
      Powertrain > Engine > Data List

      Tester Display
      Vehicle Speed
      Engine Speed
      Coolant Temp

3. Details of relevant Data List items (Selected system: ABS/VSC/TRC)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Chassis > ABS/VSC/TRC > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Stop Light SW	Stop light switch assembly	ON or OFF	OFF: Brake pedal released ON: Brake pedal depressed	-
      Steering Angle Sensor	Steering angle sensor	Min.: -3276.8° Max.: 3276.7°	Turning left: Increases Turning right: Decreases	-
      FR Wheel Speed	Front wheel speed sensor RH reading	Min.: 0 km/h (0 mph) Max.: 326.4 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
      FL Wheel Speed	Front wheel speed sensor LH reading	Min.: 0 km/h (0 mph) Max.: 326.4 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
      RR Wheel Speed	Rear wheel speed sensor RH reading	Min.: 0 km/h (0 mph) Max.: 326.4 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
      RL Wheel Speed	Rear wheel speed sensor LH reading	Min.: 0 km/h (0 mph) Max.: 326.4 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
      Vehicle Speed	Maximum wheel speed sensor reading	Min.: 0 km/h (0 mph) Max.: 326.4 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
      Engine Revolutions	Engine speed	Min.: 0 rpm Max.: 65535 rpm	Engine stopped: 0 rpm	When driving at constant speed: No large fluctuations

      
      Chassis > ABS/VSC/TRC > Data List

      Tester Display
      Stop Light SW
      Steering Angle Sensor
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed
      Vehicle Speed
      Engine Revolutions

4. Details of relevant Data List items (Selected system: Four Wheel Drive)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Powertrain / Four Wheel Drive / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Powertrain > Four Wheel Drive > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      FR Wheel Speed	Front wheel speed sensor RH reading	Min.: 0.00 km/h (0.00 mph) Max.: 327.67 km/h (203.61 mph)	Vehicle stopped: 0.00 km/h (0.00 mph)	No large fluctuations when driving at a constant speed.
      FL Wheel Speed	Front wheel speed sensor LH reading	Min.: 0.00 km/h (0.00 mph) Max.: 327.67 km/h (203.61 mph)	Vehicle stopped: 0.00 km/h (0.00 mph)	No large fluctuations when driving at a constant speed.
      RR Wheel Speed	Rear wheel speed sensor RH reading	Min.: 0.00 km/h (0.00 mph) Max.: 327.67 km/h (203.61 mph)	Vehicle stopped: 0.00 km/h (0.00 mph)	No large fluctuations when driving at a constant speed.
      RL Wheel Speed	Rear wheel speed sensor LH reading	Min.: 0.00 km/h (0.00 mph) Max.: 327.67 km/h (203.61 mph)	Vehicle stopped: 0.00 km/h (0.00 mph)	No large fluctuations when driving at a constant speed.
      Vehicle Speed	Maximum wheel speed sensor reading	Min.: 0.00 km/h (0.00 mph) Max.: 327.67 km/h (203.61 mph)	Vehicle stopped: 0.00 km/h (0.00 mph)	No large fluctuations when driving at a constant speed.

      
      Powertrain > Four Wheel Drive > Data List

      Tester Display
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed
      Vehicle Speed

5. Details of relevant Data List items (Selected system: Air Conditioner)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Body Electrical / Air Conditioner / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Body Electrical > Air Conditioner > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Ambient Temp Sensor	Thermistor assembly (ambient temperature sensor)	Min.: -23.30°C (-9.94°F) Max.: 65.95°C (150.71°F)	Actual ambient temperature displayed	Thermistor assembly (ambient temperature sensor) system malfunction: When open circuit: -23.30°C (-9.94°F) When short circuit: 65.95°C (150.71°F)
      Engine Coolant Temp	Engine coolant temperature sensor	Min.: 1.30°C (34.34°F) Max.: 90.55°C (194.99°F)	Actual engine coolant temperature displayed	ECD system malfunction CAN communication system malfunction

      
      Body Electrical > Air Conditioner > Data List

      Tester Display
      Ambient Temp Sensor
      Engine Coolant Temp

6. Details of relevant Data List items (Selected system: Combination Meter)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Body Electrical / Combination Meter / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Body Electrical > Combination Meter > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Vehicle Speed Meter	Vehicle speed	Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Almost same as actual vehicle speed	-
      Engine Rpm	Engine speed	Min.: 0 rpm, Max.: 12750 rpm	Actual engine speed	-
      Coolant Temperature	Engine coolant temperature	Min.: 0°C (32°F), Max.: 127.5°C (261.5°F)	75 to 100°C (167 to 212°F): After warming up the engine	-
      Ambient Temperature	Outside temperature	Min.: -40°C (-40°F), Max.: 87.5°C (189.5°F)	Almost the same as actual outside temperature	-
      Driver Side Door	Driver side door	CLOSE or OPEN	CLOSE: Driver side door close OPEN: Driver side door open	-
      Passenger Side Door	Front passenger side door	CLOSE or OPEN	CLOSE: Front passenger side door close OPEN: Front passenger side door open	-
      Rear Left Side Door	Rear left side door	CLOSE or OPEN	CLOSE: Rear left side door close OPEN: Rear left side door open	-
      Rear Right Side Door	Rear right side door	CLOSE or OPEN	CLOSE: Rear right side door close OPEN: Rear right side door open	-

      
      Body Electrical > Combination Meter > Data List

      Tester Display
      Vehicle Speed Meter
      Engine Rpm
      Coolant Temperature
      Ambient Temperature
      Driver Side Door
      Passenger Side Door
      Rear Left Side Door
      Rear Right Side Door

7. Details of relevant Data List items (Selected system: Navigation System)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Body Electrical / Navigation System / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Body Electrical > Navigation System > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Vehicle Speed	Maximum wheel speed sensor reading	Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations

      
      Body Electrical > Navigation System > Data List

      Tester Display
      Vehicle Speed

8. Details of relevant Data List items (Selected system: Power Source Control)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Body Electrical / Power Source Control / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Body Electrical > Power Source Control > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Stop Light Switch1	State of brake pedal (for Automatic Transmission)	ON or OFF	ON: Brake pedal depressed OFF: Brake pedal released	Use this item to determine whether the stop light switch is malfunctioning. The engine cannot be started when this item is "OFF". When this item is malfunctioning, the engine can be started by pressing and holding the ignition switch for a certain period of time.

      
      Body Electrical > Power Source Control > Data List

      Tester Display
      Stop Light Switch1

9. Details of relevant Data List items (Selected system: Back Door)

   Note

   In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

   Tech Tips

   Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

   
   

   1. Turn the ignition switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Body Electrical / Back Door / Data List.

   6. According to the display on the GTS, read the Data List.

      
      Body Electrical > Back Door > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Courtesy SW	Back door courtesy switch signal	ON or OFF	ON: Back door open OFF: Back door closed	Refer to "POWER BACK DOOR OPERATION TIMING CHART"*

      
      Body Electrical > Back Door > Data List

      Tester Display
      Courtesy SW