CAN COMMUNICATION SYSTEM DIAGNOSIS SYSTEM
ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM
V Bus
Network gateway ECU
DLC3
Bus 2
ECM
Brake actuator assembly (skid control ECU)
Main body ECU (instrument panel junction block assembly)
Pre-collision city sensor*1
Certification ECU (smart key ECU assembly)*2
Power management control ECU*2
Power steering ECU assembly
Yaw rate sensor
Spiral with sensor cable sub-assembly (steering angle sensor)
Airbag sensor assembly
Engine stop and start ECU*3
Air conditioning amplifier assembly*4, *5
Network gateway ECU
Combination meter assembly
*1: w/ Pre-collision System
*2: w/ Entry and Start System
*3: w/ Stop and Start System
*4: for 1ZR-FAE, 2ZR-FAE (w/ Entry and Start System)
*5: w/o Entry and Start System
Bus 3 (for Radio and Display Type)
Network gateway ECU
Radio and display receiver assembly
Sub Bus 12 (for 1WW)
ECM
Power management control ECU
Air conditioning amplifier assembly*
*: w/ Entry and Start System
CAN BUS CHECK
Tip:The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the GTS.
Using the GTS, select "CAN Bus Check" from "System Select".
Tip:Different connection statuses are indicated by the background color of ECUs and sensors that are displayed.
Table 1. Explanation of CAN Bus Check screen Bus Type
Background Color
Connection Status
Bus 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
Non-bus 2
(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
Non-bus 2
(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
Not displayed
Either of the following:
If a gateway function equipped ECU cannot communicate, the non-bus 2 and ECUs connected to the non-bus 2 will not be displayed.
If no ECUs are connected to the non-bus 2, ''There is no system found on the Communication Bus'' will be displayed.
Tip: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 non-bus 2 ECUs that are connected to it.
*3: Gateway function equipped ECU that memorizes the non-bus 2 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 network gateway ECU and the diag bus main bus lines for a malfunction.
Observe the connection response screen for approximately 2 minutes to check for a change in connection status of the connected ECUs and sensors.
Tip: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.
CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION
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.
Tip:The names of ECUs and sensors shown on the GTS display may differ from those shown in the DTC Table by ECU section.
ECU/Sensor Name
GTS Display
Applicability
ECM
ECM (Engine)
All vehicles
Network gateway ECU
CAN Gateway
All vehicles
Combination meter assembly
Combination Meter
All vehicles
Main body ECU (instrument panel junction block assembly)
Main Body
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)
All vehicles
Airbag sensor assembly
Airbag
All vehicles
Certification ECU (smart key ECU assembly)
Certification (Smart)
Vehicle with an entry and start system
Air conditioning amplifier assembly
Air Conditioning Amplifier
All vehicles
Radio and display receiver assembly
Display and Navigation (AVN1)
Vehicle with a radio and display type
Pre-collision city sensor
Front Camera Module
Vehicles with a pre-collision system
Power steering ECU assembly
Power Steering (EPS)
All vehicles
Engine stop and start ECU
Stop and Go/Start
Vehicles with a stop and start system
Power management control ECU
Power Management1
All vehicles
HOW TO INTERPRET CAN BUS CHECK SCREEN
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.
Tip: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 to 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.
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 lines of ECU D on the bus 2
Table 2. Text in Illustration *a
Bus 2
*b
Non-bus 2
*c
Diag Bus
*d
Terminating Resistor
*e
Location of malfunction
*f
Not displayed or background color changes to red or yellow
*g
CAN Bus Check Screen
*h
Network Gateway ECU
Tip:When there are communication stops, ECUs are present in the vehicle even though they are not displayed on the CAN Bus Check screen.
-
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 line for ECU B on the bus 2
Table 3. Text in Illustration *a
Background color periodically changes to yellow or red
*b
Not displayed or background color is yellow or red
*c
Not displayed
Table 4. Explanation of CAN Bus Check screen Bus Type
Background Color
Connection Status
Bus 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
Non-bus 2
(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
Non-bus 2
(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
Not displayed
Either of the following:
If a gateway function equipped ECU cannot communicate, the non-bus 2 and ECUs connected to the non-bus 2 will not be displayed.
If no ECUs are connected to the non-bus 2, ''There is no system found on the Communication Bus'' will be displayed.
Tip: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 non-bus 2 ECUs that are connected to it.
*3: Gateway function equipped ECU that memorizes the non-bus 2 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 line of ECU B (output from the other branch line is unstable) and the communication of ECU A is also unstable. In addition, in this example, ECU A is equipped with a gateway function. Therefore, communication is also unstable between the non-bus 2 ECUs of ECU A and the bus 2.
The example in the illustration shows that ECU B is not displayed on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of ECU B is suspected.
-
If a communication error is indicated on both the bus 2 and non-bus 2 on the CAN Bus Check screen, suspect any communication stop displayed for the bus 2 first.
Example: Open in both CAN branch lines of ECU A on the bus 2
Table 5. Text in Illustration *a
Not displayed or background color changes to red
Tip:In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the bus 2 after connecting the GTS to the DLC3. As for non-bus 2, it is possible to confirm which non-bus 2 connected ECUs can communicate with a gateway function equipped ECU on the bus 2.
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 A has a gateway function and a communication stop in ECU A is suspected.
-
If the CAN Bus Check screen indicates a communication stop only in the non-bus 2, a communication stop in the non-bus 2 is suspected.
Example: Open in both CAN branch lines of ECU G on the non-bus 2
Table 6. Text in Illustration *a
Background color changes to red
Tip:A communication error in a non-bus 2 does not affect the bus 2 or other buses.
When a gateway function equipped ECU has memorized the ECUs that are connected to the non-bus 2, 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.)
If both of the bus 2 main bus lines are open, ECUs or sensors that are located farther away from the network gateway ECU than the open part will be displayed as a communication stop on the CAN Bus Check screen.
(In this case, ECU D and E are not displayed or their background color changes to red.)
Table 7. Text in Illustration *a
Bus 2
*b
Non-bus 2
*c
Diag Bus
*d
Terminating Resistor
*e
Location of malfunction
*f
Not displayed or background color is red
*g
CAN Bus Check screen
*h
Network Gateway ECU
Tip:If a communication error occurs in an ECU, it is not displayed on the CAN Bus Check screen even though the ECU is present.
If of the non-bus 2 main bus lines are open, ECUs that are located farther away from the network gateway 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.)
Table 8. Text in Illustration *a
Bus 2
*b
Non-bus 2
*c
Diag Bus
*d
Terminating Resistor
*e
Location of malfunction
*f
Not displayed or background color is red
*g
CAN Bus Check screen
*h
Network Gateway ECU
-
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.
Table 9. Text in Illustration *a
When any of the following malfunctions occur on the bus 2
*b
When any of the following malfunctions occur on a non-bus 2
*c
Not displayed
Table 10. Details of Malfunction Short between CAN lines (CANH and CANL)
Short between a CAN line (CANH or CANL) and +B
Short between a CAN line (CANH or CANL) and ground
Open in a CAN main bus line
Tip:When a malfunction occurs on the bus 2, almost all ECUs and sensors on the bus 2 and non-bus 2 indicate a communication error (almost all ECUs are not displayed). As communication with the gateway function equipped ECU that is connected to the bus 2 stops, communication from the ECUs connected to the non-bus 2 that is monitored by the gateway function equipped ECU also stops (these ECUs are not displayed).
When a malfunction occurs in a non-bus 2, almost all ECUs connected to the non-bus 2 indicate a communication error.
A communication error in a non-bus 2 does not affect the bus 2 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)
If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below.
Tip:Communication DTCs (DTCs that start with U) indicate a communication error between the ECU that stores the DTC and the ECU that is indicated by the DTC.
If multiple ECUs store a communication DTC for a particular ECU, a communication stop of the ECU is suspected.
Table 11. Text in Illustration *a
Items to be checked
-
-
Note:This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the GTS may differ depending on the ECU that stores the DTC. (Regarding output DTCs, refer to step 6 and the DTC chart for each ECU.)
Tip:As multiple ECUs indicate a communication stop with the main body ECU, the possibility of a communication stop of the main body ECU is high.
If almost all of the communication DTCs of an ECU are stored, a communication stop of the ECU is suspected.
Table 12. Text in Illustration *a
Items to be checked
-
-
Note:This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
Tip:If almost all of the DTCs of the main body ECU are stored, the possibility of a communication stop of the main body ECU is high.
When a CAN communication error occurs, many DTCs are output. DTCs other than communication error DTCs (such as DTCs that start with C or B) and communication DTCs for the ABS system are important DTCs, however it may be easier to determine the malfunctioning part by examining the overall situation without considering these DTCs.
To help determine the part of the non-bus 2 that has a communication error, prioritize the communication stop DTCs stored in the gateway function equipped ECU.
Table 13. Text in Illustration *a
Items to be checked
*b
ECM
*c
Gateway function equipped ECU
*d
Location of malfunction
*e
Bus 2
*f
Non-bus 2
Note:This DTC table is from another model, and is only used here to show the ECUs connected to a bus 2 and a non-bus 2. It shows DTCs output when there is an open in the main bus lines for the ECM on the non-bus 2. This table does not show DTCs applicable to this vehicle.
Tip:As gateway function equipped ECUs (non-bus 2 monitor ECU) monitor signals from all ECUs that are connected to non-bus 2, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
When there is a communication stop for the gateway function equipped ECU (gateway), communication with ECUs connected to other buses such as the bus 2 stops. Therefore, communication DTCs for ECUs connected to other buses are also stored.
When any of the following malfunctions occurs, many DTCs are likely to be output from many ECUs. Because of this, it may be difficult to determine the probable malfunctioning part.
Short between CAN lines (CANH and CANL)
Short between a CAN line (CANH or CANL) and ground
Short between a CAN line (CANH or CANL) and +B
Open in a CAN branch line (CANH or CANL) of an ECU or sensor
Open in a CAN main bus line (CANH or CANL) between 2 ECUs that have a terminating resistor
DTC TABLE BY ECU
Tip:In the CAN communication system, the CAN communication DTCs of each ECU can be displayed using the GTS.
If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting (Click here).
If system function temporarily returns to normal, DTCs may not be output again even though the following DTC check procedures are used.
BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)
Tip:DTC communication uses the CAN communication system.
DTC Code
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 spiral with sensor cable sub-assembly (steering angle sensor) is invalid for 1 second or more.
The response sent to the brake actuator assembly (skid control ECU) from the yaw rate 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 airbag sensor assembly is invalid at least once within 5 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 9.6 to 16.5 V.
Turn the ignition switch to ON and wait at least 60 seconds.
ABS indicator light illuminates.
Brake 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 6 km/h (4 mph) or more.
The brake actuator assembly (skid control ECU) power supply voltage is between 9.6 to 16.5 V.
Drive the vehicle for 2 seconds at a speed of 6 km/h (4 mph) or more.
SLIP indicator light illuminates.
The DTC remains stored until it is cleared using the GTS.
U0123
Lost Communication with Yaw Rate Sensor Module
The brake actuator assembly (skid control ECU) is unable to receive certain data from the yaw rate sensor for 1 second or more.
All conditions are met:
1 second or more elapses after turning the ignition switch to ON.
The vehicle speed is 6 km/h (4 mph) or more.
The brake actuator assembly (skid control ECU) power supply voltage is between 9.6 to 16.5 V.
Drive the vehicle for 2 seconds at a speed of 6 km/h (4 mph) or more.
SLIP indicator light illuminates.
The DTC remains stored until it is cleared using the GTS.
U0126
Lost Communication with Steering Angle Sensor Module
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.
All conditions are met:
1 second or more elapses after turning the ignition switch to ON.
The vehicle speed is 6 km/h (4 mph) or more.
The brake actuator assembly (skid control ECU) power supply voltage is between 9.6 to 16.5 V.
Drive the vehicle for 2 seconds at a speed of 6 km/h (4 mph) or more.
SLIP indicator light illuminates.
The DTC remains stored until it is cleared using the GTS.
ECM (for 1ZR-FAE, 2ZR-FAE)
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U011B*
Lost Communication with Rocker Arm Control Module "A"
U0129
Lost Communication with Brake System Control Module
*: Refer to SFI System.
-
for 1ZR-FAE:Click here
for 2ZR-FAE:Click here
ECM (for 1WW)
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0028
Vehicle Communication Bus A
U0129
Lost Communication with Brake System Control Module
U1103
Lost Communication with Stop and Start Control Module
P3200*
Incorrect RAM Value of CAN Driver
*: Refer to ECD SYSTEM (Click here).
MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
U0101
Lost Communication with TCM
U0151
Lost Communication with SRS Airbag ECU
U0155
Lost Communication with Instrument Panel Cluster (IPC) Control Module
U0327
Software Incompatibility with Vehicle Security Control Module
U1133
Lost Communication with PMN Module
COMBINATION METER ASSEMBLY
Tip:This ECU uses the CAN communication system for DTC communication.
DTC Code
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 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 10.5 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.
U0129
Lost Communication with Brake System Control Module
The combination meter assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) 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 10.5 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.
U0131
Lost Communication with Power Steering Control Module
The combination meter assembly is unable to receive certain data from the power steering ECU assembly 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 10.5 V or higher.
Turn the ignition switch to ON and wait at least 3 seconds.
-
The DTC remains stored until it is cleared using the GTS.
U0142
Lost Communication with Body Control Module "B"
The combination meter assembly is unable to receive certain data from the main body ECU (instrument panel junction block assembly) for 7 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 10.5 V or higher.
Turn the ignition switch to ON and wait at least 7 seconds.
-
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 10.5 V or higher.
Turn the ignition switch to ON and wait at least 10 seconds.
SRS warning light illuminated.
The DTC remains stored until it is cleared using the GTS.
U023A
Lost Communication with Front Camera Module
The combination meter assembly is unable to receive certain data from the pre-collision city sensor 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 10.5 V or higher.
Turn the ignition switch to ON and wait at least 10 seconds.
PCS indicator light blinks.
The DTC remains stored until it is cleared using the GTS.
CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
For vehicles with an entry and start system.
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
U0142
Lost Communication with Body Control Module "B"
U0155
Lost Communication with Instrument Panel Cluster (IPC) Control Module
U1103
Lost Communication with Stop and Start Control Module
AIR CONDITIONING AMPLIFIER ASSEMBLY
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With EV ECU
U0131
Lost Communication With Power Steering Control Module
U0142
Lost Communication With Body Control Module "B"
U0155
Lost Communication With Instrument Panel Cluster (IPC) Control Module
POWER STEERING ECU ASSEMBLY
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
U0129
Lost Communication with Brake System Control Module
POWER MANAGEMENT CONTROL ECU (Power Source Control)
For vehicles with an entry and start system.
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
POWER MANAGEMENT CONTROL ECU (Starting Control)
For vehicles with an entry and start system.
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
POWER MANAGEMENT CONTROL ECU (PM2 Gateway)
For vehicles with a 1WW engine type and entry and start system.
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
U0164
Lost Communication With HVAC Control Module
U1002
Lost Communication with Gateway Module
RADIO AND DISPLAY RECEIVER ASSEMBLY
For vehicles with a radio and display type.
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0073
Sending Malfunction (Navigation to APGS)
U0100
Engine ECU Communication
U0129
VSC(ECB*)ECU Communication
U0140
Lost Communication with Body Control Module
U0155
Lost Communication with Instrument Panel Cluster Control Module (Combination Meter)
U0164
Air Conditioner ECU Communication
ECB*: Electronically Controlled Brake System
ENGINE STOP AND START ECU
For vehicles with a stop and start system.
Tip:DTC communication uses the CAN communication system.
DTC Code
Detection Item
U0100
Lost Communication With ECM/PCM "A"
U0121
Lost Communication with Anti-Lock Brake System (ABS) Control Module
U0123
Lost Communication with Yaw Rate Sensor Module
U0126
Lost Communication with Steering Angle Sensor Module
U0131
Lost Communication with Power Steering Control Module
U0140
Lost Communication with J/B ECU
U0151
Lost Communication with SRS Airbag ECU
U0155
Lost Communication with Instrument Panel Cluster Control Module (Combination Meter)
U0164
Lost Communication With HVAC Control Module
PRE-COLLISION CITY SENSOR (w/ Pre-collision System)
DTC Code
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 pre-collision city sensor is unable to receive certain data from the ECM for 9 seconds or more.
All conditions are met:
3 seconds or more elapses after turning the ignition switch to ON.
The vehicle speed is 5 km/h (3 mph) or more.
The voltage at the IG power supply terminal of the pre-collision city sensor is 10 V or higher.
Drive the vehicle for 12 seconds at a speed of 5 km/h (3 mph) or more.
PCS indicator light blinks.
Master warning r light illuminates.
Displays messages on the multi-information display.
The DTC is stored only while the malfunction is present.
U0123
Lost Communication With Yaw Rate Sensor Module
The pre-collision city sensor is unable to receive certain data from the yaw rate sensor for 1 second or more.
Both conditions are met:
3 seconds or more elapses after turning the ignition switch to ON.
The voltage at the IG power supply terminal of the pre-collision city sensor is 10 V or higher.
Turn the ignition switch to ON and wait at least 4 seconds.
PCS indicator light blinks.
Master warning r light illuminates.
Displays messages on the multi-information display.
The DTC is stored only while the malfunction is present.
U0126
Lost Communication With Steering Angle Sensor Module
The pre-collision city sensor is unable to receive certain data from the spiral with sensor cable sub-assembly for 1 second or more.
Both conditions are met:
3 seconds or more elapses after turning the ignition switch to ON.
The voltage at the IG power supply terminal of the pre-collision city sensor is 10 V or higher.
Turn the ignition switch to ON and wait at least 4 seconds.
PCS indicator light blinks.
Master warning r light illuminates.
Displays messages on the multi-information display.
The DTC is stored only while the malfunction is present.
U0129
Lost Communication With Brake System Control Module
The pre-collision city sensor is unable to receive certain data from the brake actuator assembly (skid control ECU) for 8 seconds or more.
Both conditions are met:
3 seconds or more elapses after turning the ignition switch to ON.
The voltage at the IG power supply terminal of the pre-collision city sensor is 10 V or higher.
Turn the ignition switch to ON and wait at least 11 seconds.
PCS indicator light blinks.
Master warning r light illuminates.
Displays messages on the multi-information display.
The DTC is stored only while the malfunction is present.
U0155
Lost Communication With Instrument Panel Cluster (IPC) Control Module
The pre-collision city sensor is unable to receive certain data from the combination meter assembly for 80 seconds or more.
All conditions are met:
3 seconds or more elapses after turning the ignition switch to ON.
The vehicle speed is 5 km/h (3 mph) or more.
The voltage at the IG power supply terminal of the pre-collision city sensor is 10 V or higher.
Drive the vehicle for 83 seconds at a speed of 5 km/h (3 mph) or more.
PCS indicator light blinks.
Displays messages on the multi-information display.
The DTC is stored only while the malfunction is present.
U023A
Lost Communication With Image Processing Module "A"
The brake actuator assembly (skid control ECU) is unable to receive certain data from the pre-collision city sensor for 2 seconds or more.
Both conditions are met:
3 seconds or more elapses after turning the ignition switch to ON.
The voltage at the IG power supply terminal of the pre-collision city sensor is 10 V or higher.
Turn the ignition switch to ON and wait at least 5 seconds.
PCS indicator light blinks.
Master warning r light illuminates.
Displays messages on the multi-information display.
The DTC is stored only while the malfunction is present.
NETWORK GATEWAY ECU
Tip:The network gateway ECU is connected to the CAN communication system but CAN communication DTCs are not stored.
AIRBAG SENSOR ASSEMBLY
Tip:The airbag sensor assembly is connected to the CAN communication system but CAN communication DTCs are not stored.
YAW RATE SENSOR
Tip:The yaw rate sensor is connected to the CAN communication system but CAN communication DTCs are not stored.
SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR)
Tip:The Spiral with sensor cable sub-assembly (steering angle sensor) is connected to the CAN communication system but CAN communication DTCs are not stored.
DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 2, PAST COMMUNICATION ERROR)
Regarding a past communication error of an ECU and sensor connected to the bus 2 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) that had a malfunction can be determined based on the following DTC combination table.
Tip: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 bus line(s) 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 bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
○: DTC is output.
-: DTC is not output.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
*3: for 1ZR-FAE, 2ZR-FAE
*4: for 1WW
*5: except 1WW, w/ Entry and Start System
*6: for 1WW, w/ Entry and Start System
If an open occurs in just one of the wires of a CAN branch line, 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.
If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
Output from
Output DTC
Trouble Mode
Open in CAN branch line(s)
Center Airbag Sensor Communication Stop Mode (Click here)
Main Body ECU Communication Stop Mode (Click here)
Air Conditioning Amplifier Communication Stop Mode (Click here)*5
Central Gateway ECU Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
-
○
-
U0131
-
-
○
-
U0142
-
○
○
-
U0155
-
-
○
-
Main body ECU (instrument panel junction block assembly)
U0100
-
○
-
-
U0101
-
○
-
-
U0151
○
○
-
-
U0155
-
○
-
-
U0327
-
○
-
-
U1133
-
○
-
-
Engine stop and start ECU
U0100
-
-
-
-
U0121
-
-
-
-
U0123
-
-
-
-
U0126
-
-
-
-
U0131
-
-
-
-
U0140
-
○
-
-
U0151
○
-
-
-
U0155
-
-
-
-
U0164
-
-
○
-
ECM*3
U0129
-
-
-
-
ECM*4
U0129
-
-
-
-
U1103
-
-
-
-
Power steering ECU assembly
U0100
-
-
-
-
U0129
-
-
-
-
Certification ECU (smart key ECU assembly)
U0100
-
-
-
-
U0142
-
○
-
-
U0155
-
-
-
-
U1103
-
-
-
-
Combination meter assembly
U0100
-
-
-
-
U0129
-
-
-
-
U0131
-
-
-
-
U0142
-
○
-
-
U0151
○
-
-
-
U023A
-
-
-
-
Bus 2
Pre-collision city sensor
U0100
-
-
-
-
U0123
-
-
-
-
U0126
-
-
-
-
U0129
-
-
-
-
U0155
-
-
-
-
Power management ECU*2
U0100
-
-
-
-
U0164
-
-
○
-
U1002
-
-
-
-
Brake actuator assembly (skid control ECU)*1
U0100
-
-
-
-
U0123
-
-
-
-
U0126
-
-
-
-
Network gateway ECU*2
-
-
-
-
-
Airbag sensor assembly
-
-
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
-
-
Yaw rate sensor
-
-
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
-
○
-
U0131
-
-
○
-
U0142
-
○
○
-
U0155
-
-
○
-
Bus 3
Radio and display receiver assembly*1
U0100
-
-
-
-
U0129
-
-
-
-
U0140
-
○
-
-
U0155
-
-
-
-
U0164
-
-
○
-
Network gateway ECU*2
-
-
-
-
-
Output from
Output DTC
Trouble Mode
Open in CAN branch line(s)
Engine Stop and Start ECU Communication Stop Mode (Click here)
Power Steering ECU Communication Stop Mode (Click here)
Certification ECU Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
-
-
U0131
-
○
-
U0142
-
-
-
U0155
-
-
-
Main body ECU (instrument panel junction block assembly)
U0100
-
-
-
U0101
-
-
-
U0151
-
-
-
U0155
-
-
-
U0327
-
-
○
U1133
-
-
○
Engine stop and start ECU
U0100
○
-
-
U0121
○
-
-
U0123
○
-
-
U0126
○
-
-
U0131
○
○
-
U0140
○
-
-
U0151
○
-
-
U0155
○
-
-
U0164
○
-
-
ECM*3
U0129
-
-
-
ECM*4
U0129
-
-
-
U1103
○
-
-
Power steering ECU assembly
U0100
-
○
-
U0129
-
○
-
Certification ECU (smart key ECU assembly)
U0100
-
-
○
U0142
-
-
○
U0155
-
-
○
U1103
○
-
○
Combination meter assembly
U0100
-
-
-
U0129
-
-
-
U0131
-
○
-
U0142
-
-
-
U0151
-
-
-
U023A
-
-
-
Bus 2
Pre-collision city sensor
U0100
-
-
-
U0123
-
-
-
U0126
-
-
-
U0129
-
-
-
U0155
-
-
-
Power management ECU*2
U0100
-
-
-
U0164
-
-
-
U1002
-
-
-
Brake actuator assembly (skid control ECU)*1
U0100
-
-
-
U0123
-
-
-
U0126
-
-
-
Network gateway ECU*2
-
-
-
-
Airbag sensor assembly
-
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
-
Yaw rate sensor
-
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
-
-
U0131
-
○
-
U0142
-
-
-
U0155
-
-
-
Bus 3
Radio and display receiver assembly*1
U0100
-
-
-
U0129
-
-
-
U0140
-
-
-
U0155
-
-
-
U0164
-
-
-
Network gateway ECU*2
-
-
-
-
Output from
Output DTC
Trouble Mode
Open in CAN branch line(s)
Front Camera Module Communication Stop Mode (Click here)
Power Management Control ECU Communication Stop Mode (Click here)
ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
○
-
U0131
-
○
-
U0142
-
○
-
U0155
-
○
-
Main body ECU (instrument panel junction block assembly)
U0100
-
-
-
U0101
-
-
-
U0151
-
-
-
U0155
-
-
-
U0327
-
-
-
U1133
-
-
-
Engine stop and start ECU
U0100
-
-
-
U0121
-
-
○
U0123
-
-
-
U0126
-
-
-
U0131
-
-
-
U0140
-
-
-
U0151
-
-
-
U0155
-
-
-
U0164
-
○*6
-
ECM*3
U0129
-
-
○
ECM*4
U0129
-
-
○
U1103
-
-
-
Power steering ECU assembly
U0100
-
-
-
U0129
-
-
○
Certification ECU (smart key ECU assembly)
U0100
-
-
-
U0142
-
-
-
U0155
-
-
-
U1103
-
-
-
Combination meter assembly
U0100
-
-
-
U0129
-
-
○
U0131
-
-
-
U0142
-
-
-
U0151
-
-
-
U023A
○
-
-
Bus 2
Pre-collision city sensor
U0100
○
-
-
U0123
○
-
-
U0126
○
-
-
U0129
○
-
○
U0155
○
-
-
Power management ECU*2
U0100
-
○
-
U0164
-
○*6
-
U1002
-
-
-
Brake actuator assembly (skid control ECU)*1
U0100
-
-
○
U0123
-
-
○
U0126
-
-
○
Network gateway ECU*2
-
-
-
-
Airbag sensor assembly
-
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
-
Yaw rate sensor
-
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
○
-
U0131
-
○
-
U0142
-
○
-
U0155
-
○
-
Bus 3
Radio and display receiver assembly*1
U0100
-
-
-
U0129
-
-
○
U0140
-
-
-
U0155
-
-
-
U0164
-
○
-
Network gateway ECU*2
-
-
-
-
Output from
Output DTC
Trouble Mode
Open in CAN branch line(s)
Steering Angle Sensor Communication Stop Mode (Click here)
Yaw Rate Sensor Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
-
U0131
-
-
U0142
-
-
U0155
-
-
Main body ECU (instrument panel junction block assembly)
U0100
-
-
U0101
-
-
U0151
-
-
U0155
-
-
U0327
-
-
U1133
-
-
Engine stop and start ECU
U0100
-
-
U0121
-
-
U0123
-
○
U0126
○
-
U0131
-
-
U0140
-
-
U0151
-
-
U0155
-
-
U0164
-
-
ECM*3
U0129
-
-
ECM*4
U0129
-
-
U1103
-
-
Power steering ECU assembly
U0100
-
-
U0129
-
-
Certification ECU (smart key ECU assembly)
U0100
-
-
U0142
-
-
U0155
-
-
U1103
-
-
Combination meter assembly
U0100
-
-
U0129
-
-
U0131
-
-
U0142
-
-
U0151
-
-
U023A
-
-
Bus 2
Pre-collision city sensor
U0100
-
-
U0123
-
○
U0126
○
-
U0129
-
-
U0155
-
-
Power management ECU*2
U0100
-
-
U0164
-
-
U1002
-
-
Brake actuator assembly (skid control ECU)*1
U0100
-
-
U0123
-
○
U0126
○
-
Network gateway ECU*2
-
-
-
Airbag sensor assembly
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
Yaw rate sensor
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
-
U0131
-
-
U0142
-
-
U0155
-
-
Bus 3
Radio and display receiver assembly*1
U0100
-
-
U0129
-
-
U0140
-
-
U0155
-
-
U0164
-
-
Network gateway ECU*2
-
-
-
Output from
Output DTC
Trouble Mode
Open in CAN main bus line(s)
Combination Meter ECU Communication Stop Mode (Click here)
No. 3 CAN Junction Connector - No. 2 CAN Junction Connector
No. 2 CAN Junction Connector - No. 1 CAN Junction Connector
ECM Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
○
○
○
U0131
-
-
-
-
U0142
-
○
○
-
U0155
○
-
-
-
Main body ECU (instrument panel junction block assembly)
U0100
-
-
-
○
U0101
-
-
-
○
U0151
-
○
○
-
U0155
○
○
○
-
U0327
-
○
○
-
U1133
-
○
○
-
Engine stop and start ECU
U0100
-
○
○
○
U0121
-
○
○
-
U0123
-
-
-
-
U0126
-
-
-
-
U0131
-
○
○
-
U0140
-
○
○
-
U0151
-
-
-
-
U0155
○
-
-
-
U0164
-
-
-
-
ECM*3
U0129
-
-
-
○
ECM*4
U0129
-
-
-
○
U1103
-
○
○
○
Power steering ECU assembly
U0100
-
○
○
○
U0129
-
-
-
-
Certification ECU (smart key ECU assembly)
U0100
-
○
○
○
U0142
-
○
○
-
U0155
○
-
-
-
U1103
-
-
-
-
Combination meter assembly
U0100
○
○
○
○
U0129
○
○
○
-
U0131
○
-
-
-
U0142
○
○
○
-
U0151
○
-
-
-
U023A
○
○
-
-
Bus 2
Pre-collision city sensor
U0100
-
-
○
○
U0123
-
○
-
-
U0126
-
○
-
-
U0129
-
-
○
-
U0155
○
○
-
-
Power management ECU*2
U0100
-
○
○
○
U0164
-
-
-
-
U1002
-
-
-
-
Brake actuator assembly (skid control ECU)*1
U0100
-
-
-
○
U0123
-
○
○
-
U0126
-
○
○
-
Network gateway ECU*2
-
-
-
-
-
Airbag sensor assembly
-
-
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
-
-
Yaw rate sensor
-
-
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
○
○
○
U0131
-
-
-
-
U0142
-
○
○
-
U0155
○
-
-
-
Bus 3
Radio and display receiver assembly*1
U0100
-
○
○
○
U0129
-
○
○
-
U0140
-
○
○
-
U0155
○
-
-
-
U0164
-
-
-
-
Network gateway ECU*2
-
-
-
-
-
Output from
Output DTC
Trouble Mode
CAN bus lines short circuit or short to GND
CANH - CANL
CANH - GND
CANL - GND
Bus 2
Air conditioning amplifier assembly*5
U0100
○
U0131
○
U0142
○
U0155
○
Main body ECU (instrument panel junction block assembly)
U0100
○
U0101
○
U0151
○
U0155
○
U0327
○
U1133
○
Engine stop and start ECU
U0100
○
U0121
○
U0123
○
U0126
○
U0131
○
U0140
○
U0151
○
U0155
○
U0164
○
ECM*3
U0129
○
ECM*4
U0129
○
U1103
○
Power steering ECU assembly
U0100
○
U0129
○
Certification ECU (smart key ECU assembly)
U0100
○
U0142
○
U0155
○
U1103
○
Combination meter assembly
U0100
○
U0129
○
U0131
○
U0142
○
U0151
○
U023A
○
Bus 2
Pre-collision city sensor
U0100
○
U0123
○
U0126
○
U0129
○
U0155
○
Power management ECU*2
U0100
○
U0164
○
U1002
○
Brake actuator assembly (skid control ECU)*1
U0100
○
U0123
○
U0126
○
Network gateway ECU*2
-
-
Airbag sensor assembly
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
Yaw rate sensor
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
○
U0131
○
U0142
○
U0155
○
Bus 3
Radio and display receiver assembly*1
U0100
○
U0129
○
U0140
○
U0155
○
U0164
○
Network gateway ECU*2
-
-
DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 3, PAST COMMUNICATION ERROR)
Regarding a past communication error of an ECU and sensor connected to the bus 3 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) that had a malfunction can be determined based on the following DTC combination table.
Tip: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 bus line(s) 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 bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
○: DTC is output.
-: DTC is not output.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
*3: for 1ZR-FAE, 2ZR-FAE
*4: for 1WW
*5: except 1WW, w/ Entry and Start System
*6: for 1WW, w/ Entry and Start System
If an open occurs in just one of the wires of a CAN branch line, 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.
If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
Output from
Output DTC
Trouble Mode
Open in CAN branch line(s)
Display and Navigation Assembly Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
U0131
-
U0142
-
U0155
-
Main body ECU (instrument panel junction block assembly)
U0100
-
U0101
-
U0151
-
U0155
-
U0327
-
U1133
-
Engine stop and start ECU
U0100
-
U0121
-
U0123
-
U0126
-
U0131
-
U0140
-
U0151
-
U0155
-
U0164
-
ECM*3
U0129
-
ECM*4
U0129
-
U1103
-
Power steering ECU assembly
U0100
-
U0129
-
Certification ECU (smart key ECU assembly)
U0100
-
U0142
-
U0155
-
U1103
-
Combination meter assembly
U0100
-
U0129
-
U0131
-
U0142
-
U0151
-
U023A
-
Bus 2
Pre-collision city sensor
U0100
-
U0123
-
U0126
-
U0129
-
U0155
-
Power management ECU*2
U0100
-
U0164
-
U1002
-
Brake actuator assembly (skid control ECU)*1
U0100
-
U0123
-
U0126
-
Network gateway ECU*2
-
-
Airbag sensor assembly
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
Yaw rate sensor
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
U0131
-
U0142
-
U0155
-
Bus 3
Radio and display receiver assembly*1
U0100
○
U0129
○
U0140
○
U0155
○
U0164
○
Network gateway ECU*2
-
-
Output from
Output DTC
Trouble Mode
Open in CAN main bus line(s)
Central Gateway ECU Communication Stop Mode (CA3H, CA3L) (Click here)
Central Gateway ECU Communication Stop Mode (CAYH, CAYL) (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
-
U0131
-
-
U0142
-
-
U0155
-
-
Main body ECU (instrument panel junction block assembly)
U0100
-
-
U0101
-
-
U0151
-
-
U0155
-
-
U0327
-
-
U1133
-
-
Engine stop and start ECU
U0100
-
-
U0121
-
-
U0123
-
-
U0126
-
-
U0131
-
-
U0140
-
-
U0151
-
-
U0155
-
-
U0164
-
-
ECM*3
U0129
-
-
ECM*4
U0129
-
-
U1103
-
-
Power steering ECU assembly
U0100
-
-
U0129
-
-
Certification ECU (smart key ECU assembly)
U0100
-
-
U0142
-
-
U0155
-
-
U1103
-
-
Combination meter assembly
U0100
-
-
U0129
-
-
U0131
-
-
U0142
-
-
U0151
-
-
U023A
-
-
Bus 2
Pre-collision city sensor
U0100
-
-
U0123
-
-
U0126
-
-
U0129
-
-
U0155
-
-
Power management ECU*2
U0100
-
-
U0164
-
-
U1002
-
-
Brake actuator assembly (skid control ECU)*1
U0100
-
-
U0123
-
-
U0126
-
-
Network gateway ECU*2
-
-
-
Airbag sensor assembly
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
Yaw rate sensor
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
-
U0131
-
-
U0142
-
-
U0155
-
-
Bus 3
Radio and display receiver assembly*1
U0100
○
-
U0129
○
-
U0140
○
-
U0155
○
-
U0164
○
-
Network gateway ECU*2
-
-
-
Output from
Output DTC
Trouble Mode
CAN bus lines short circuit or short to GND
CANH - CANL
CANH - GND
CANL - GND
Bus 2
Air conditioning amplifier assembly*5
U0100
-
U0131
-
U0142
-
U0155
-
Main body ECU (instrument panel junction block assembly)
U0100
-
U0101
-
U0151
-
U0155
-
U0327
-
U1133
-
Engine stop and start ECU
U0100
-
U0121
-
U0123
-
U0126
-
U0131
-
U0140
-
U0151
-
U0155
-
U0164
-
ECM*3
U0129
-
ECM*4
U0129
-
U1103
-
Power steering ECU assembly
U0100
-
U0129
-
Certification ECU (smart key ECU assembly)
U0100
-
U0142
-
U0155
-
U1103
-
Combination meter assembly
U0100
-
U0129
-
U0131
-
U0142
-
U0151
-
U023A
-
Bus 2
Pre-collision city sensor
U0100
-
U0123
-
U0126
-
U0129
-
U0155
-
Power management ECU*2
U0100
-
U0164
-
U1002
-
Brake actuator assembly (skid control ECU)*1
U0100
-
U0123
-
U0126
-
Network gateway ECU*2
-
-
Airbag sensor assembly
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
Yaw rate sensor
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
-
U0131
-
U0142
-
U0155
-
Bus 3
Radio and display receiver assembly*1
U0100
○
U0129
○
U0140
○
U0155
○
U0164
○
Network gateway ECU*2
-
-
DTC COMBINATION TABLE (OPEN OR SHORT IN SUB BUS 12, PAST COMMUNICATION ERROR) (for 1WW, w/ Entry and Start System)
Regarding a past communication error of an ECU and sensor connected to the sub bus 12 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) that had a malfunction can be determined based on the following DTC combination table.
Tip: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 bus line(s) 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 bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
○: DTC is output.
-: DTC is not output.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
*3: for 1ZR-FAE, 2ZR-FAE
*4: for 1WW
If an open occurs in just one of the wires of a CAN branch line, 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.
If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
Output from
Output DTC
Trouble Mode
Open in CAN branch line(s)
Air Conditioning Amplifier Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
U0131
-
U0142
-
U0155
-
Main body ECU (instrument panel junction block assembly)
U0100
-
U0101
-
U0151
-
U0155
-
U0327
-
U1133
-
Engine stop and start ECU
U0100
-
U0121
-
U0123
-
U0126
-
U0131
-
U0140
-
U0151
-
U0155
-
U0164
○
ECM*3
U0129
-
ECM*4
U0129
-
U1103
-
Power steering ECU assembly
U0100
-
U0129
-
Certification ECU (smart key ECU assembly)
U0100
-
U0142
-
U0155
-
U1103
-
Combination meter assembly
U0100
-
U0129
-
U0131
-
U0142
-
U0151
-
U023A
-
Bus 2
Pre-collision city sensor
U0100
-
U0123
-
U0126
-
U0129
-
U0155
-
Power management ECU*2
U0100
-
U0164
○
U1002
-
Brake actuator assembly (skid control ECU)*1
U0100
-
U0123
-
U0126
-
Network gateway ECU*2
-
-
Airbag sensor assembly
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
Yaw rate sensor
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
○
U0131
○
U0142
○
U0155
○
Bus 3
Radio and display receiver assembly*1
U0100
-
U0129
-
U0140
-
U0155
-
U0164
-
Network gateway ECU*2
-
-
Output from
Output DTC
Trouble Mode
Open in CAN main bus line(s)
Power Management Control ECU Communication Stop Mode (Click here)
ECM Communication Stop Mode (Click here)
Bus 2
Air conditioning amplifier assembly*5
U0100
-
-
U0131
-
-
U0142
-
-
U0155
-
-
Main body ECU (instrument panel junction block assembly)
U0100
-
-
U0101
-
-
U0151
-
-
U0155
-
-
U0327
-
-
U1133
-
-
Engine stop and start ECU
U0100
-
-
U0121
-
-
U0123
-
-
U0126
-
-
U0131
-
-
U0140
-
-
U0151
-
-
U0155
-
-
U0164
○
-
ECM*3
U0129
-
-
ECM*4
U0129
-
-
U1103
-
-
Power steering ECU assembly
U0100
-
-
U0129
-
-
Certification ECU (smart key ECU assembly)
U0100
-
-
U0142
-
-
U0155
-
-
U1103
-
-
Combination meter assembly
U0100
-
-
U0129
-
-
U0131
-
-
U0142
-
-
U0151
-
-
U023A
-
-
Bus 2
Pre-collision city sensor
U0100
-
-
U0123
-
-
U0126
-
-
U0129
-
-
U0155
-
-
Power management ECU*2
U0100
-
-
U0164
○
-
U1002
○
○
Brake actuator assembly (skid control ECU)*1
U0100
-
-
U0123
-
-
U0126
-
-
Network gateway ECU*2
-
-
-
Airbag sensor assembly
-
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
-
Yaw rate sensor
-
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
○
-
U0131
○
-
U0142
○
-
U0155
○
-
Bus 3
Radio and display receiver assembly*1
U0100
-
-
U0129
-
-
U0140
-
-
U0155
-
-
U0164
-
-
Network gateway ECU*2
-
-
-
Output from
Output DTC
Trouble Mode
CAN bus lines short circuit or short to GND
CANH - CANL
CANH - GND
CANL - GND
Bus 2
Air conditioning amplifier assembly*5
U0100
-
U0131
-
U0142
-
U0155
-
Main body ECU (instrument panel junction block assembly)
U0100
-
U0101
-
U0151
-
U0155
-
U0327
-
U1133
-
Engine stop and start ECU
U0100
-
U0121
-
U0123
-
U0126
-
U0131
-
U0140
-
U0151
-
U0155
-
U0164
○
ECM*3
U0129
-
ECM*4
U0129
-
U1103
-
Power steering ECU assembly
U0100
-
U0129
-
Certification ECU (smart key ECU assembly)
U0100
-
U0142
-
U0155
-
U1103
-
Combination meter assembly
U0100
-
U0129
-
U0131
-
U0142
-
U0151
-
U023A
-
Bus 2
Pre-collision city sensor
U0100
-
U0123
-
U0126
-
U0129
-
U0155
-
Power management ECU*2
U0100
-
U0164
○
U1002
-
Brake actuator assembly (skid control ECU)*1
U0100
-
U0123
-
U0126
-
Network gateway ECU*2
-
-
Airbag sensor assembly
-
-
Spiral with sensor cable sub-assembly (steering angle sensor)
-
-
Yaw rate sensor
-
-
Sub Bus 12*6
Air conditioning amplifier assembly
U0100
○
U0131
○
U0142
○
U0155
○
Bus 3
Radio and display receiver assembly*1
U0100
-
U0129
-
U0140
-
U0155
-
U0164
-
Network gateway ECU*2
-
-
CAN BUS WAVEFORMS
Tip:This waveform is measured between terminals CANH and GND, and terminals CANL and GND of the DLC3. (Use this as a reference for diagnosis of CAN communication lines.)
When malfunctions in multiple ECUs are suspected based on the CAN bus check and DTCs checked using the GTS, check the resistance of the CAN bus using an electrical tester first (Click here). If no problems are found, check the following waveforms.
If a waveform is not similar to one of the following 3 patterns (Group 1), then an open in a CAN main bus line, an open in a CAN branch line, or a short between a CAN line (CANH or CANL) and ground is suspected (Group 2).
Wiggle the connector and wire harness to check if the waveform changes.
CAN bus waveforms (Group 1)
-
Normal waveform
-
Open in both of the lines (CANH and CANL) of a CAN branch
Tip:Waveforms (waveforms shown using dotted lines) are not present 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.
-
Short between the CAN bus lines (CANH and CANL)
Tip: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.
-
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.
-
Open in a CAN branch line (CANH)
Tip:An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. 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 line is disconnected.
-
Open in a CAN branch line (CANL)
Tip:An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. 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 line is disconnected.
-
Open in a CAN main bus line (CANH)
Tip: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 bus line can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch.
-
Short between a CAN bus line (CANH) and ground
Tip:Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors 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 electrical tester.
-
Short between a CAN bus line (CANL) and ground
Tip:Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors 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 electrical tester.
-
DATA SENDING/RECEIVING TABLE
Data sending/receiving table
Tip: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 signal
ECM
Combination meter assembly
Brake actuator assembly (skid control ECU)
Power steering ECU assembly
Certification ECU (smart key ECU assembly)
Power management control ECU
Radio and display receiver assembly
Airbag sensor assembly
Air conditioning amplifier assembly
Main body ECU (instrument panel junction block assembly)
Engine Speed [Engine and ECT]
Engine Rpm [Combination Meter]
Engine Revolutions [ABS/VSC/TRC]
Engine Revolution [EMPS]
Engine coolant temperature signal
ECM
Air conditioning amplifier assembly
Combination meter assembly
-
Coolant Temp [Engine and ECT]
Engine Coolant Temp [Air Conditioner]
Coolant Temperature [Combination Meter]
Shift position signal
ECM
Radio and display receiver assembly
Power management control ECU
Airbag sensor assembly
Main body ECU (instrument panel junction block assembly)
Combination meter assembly*1
Brake actuator assembly (skid control ECU)
Pre-collision city sensor
Shift SW Status (R Range) [Engine and ECT]
Reverse Signal [Navigation System]
Shift P Signal [Power Source Control]
Stop light switch signal
Brake actuator assembly (skid control ECU)
Power management control ECU
Engine stop and start ECU
Airbag sensor assembly
Pre-collision city sensor
Stop Light SW [ABS/VSC/TRC]
Stop Light Switch1 [Power Source Control]
Stop Light SW (ABS/VSC) [Stop and Start]
ECM
Power management control ECU
Airbag sensor assembly
Stop Light Switch [Engine and ECT]
Stop Light Switch1 [Power Source Control]
Vehicle speed signal
Brake actuator assembly (skid control ECU)
Combination meter assembly
Engine stop and start ECU
Power steering ECU assembly
Airbag sensor assembly
Radio and display receiver assembly
Pre-collision city sensor
Vehicle Speed [ABS/VSC/TRC]
Vehicle Speed Meter [Combination Meter]
Vehicle Spd 1 (ABS/VSC) [Stop and Start]
Combination meter assembly*2
-
Power management control ECU
Air conditioning amplifier assembly
Main body ECU (instrument panel junction block assembly)
Certification ECU (smart key ECU assembly)
Radio and display receiver assembly
Vehicle Speed Meter [Combination Meter]
Ambient temperature signal
Air conditioning amplifier assembly
ECM
Radio and display receiver assembly
Brake actuator assembly (skid control ECU)
Pre-collision city sensor
Ambient Temp Sensor [Air Conditioner]
Ambient Temp for A/C [Engine and ECT]
Steering angle sensor signal
Spiral with sensor cable sub-assembly (steering angle sensor)
Brake actuator assembly (skid control ECU)
Engine stop and start ECU
Airbag sensor assembly
Pre-collision city sensor
Steering Angle Value [ABS/VSC/TRC]
Steering Angle [Stop and Start]
Door courtesy signal
Main body ECU (instrument panel junction block assembly)
Engine stop and start ECU
Power management control ECU
Radio and display receiver assembly
Certification ECU (smart key ECU assembly)
Combination meter assembly
Brake actuator assembly (skid control ECU)
D Door Courtesy SW [Main Body]
P Door Courtesy SW [Main Body]
RL Door Courtesy SW [Main Body]
RR Door Courtesy SW [Main Body]
D Courtesy Switch Signal [Stop and Start]
Details of relevant Data List items (Selected system: Engine and ECT)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List.
Read the Data List according to the display on the GTS.
Table 14. Engine and ECT Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Engine Speed
Engine speed /
Min.: 0 rpm, Max.: 16383 rpm
580 to 680 rpm: Idling (for Manual Transaxle)
600 to 700 rpm: Idling (except Manual Transaxle)
-
Coolant Temp
Engine coolant temperature /
Min.: -40°C, Max.: 140°C
80 to 100°C (176 to 212°F): After warming up
If the value is -40°C (-40°F), the sensor circuit is open.
If the value is 140°C (284°F), the sensor circuit is shorted.
Stop Light Switch
Stop light switch /
OFF or ON
OFF: Brake pedal released
ON: Brake pedal depressed
-
Ambient Temp for A/C
Ambient temperature for A/C /
Min.: -40°C, Max.: 215°C
-
For use when engine stall, starting problems or rough idle is present.
Shift SW Status (R Range)
Park/neutral position switch status /
ON or OFF
OFF: Shift lever not in R
ON: Shift lever in R
-
Details of relevant Data List items (Selected system: Stop and Start)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Stop and Start / Data List.
Read the Data List according to the display on the GTS.
Table 15. Stop and Start Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
D Courtesy Switch Signal
Driver door courtesy switch signal/
OFF or ON
ON: Driver side door opened
ON: Driver side door opened
-
Stop Light SW (ABS/VSC)
Stop light switch assembly signal from brake system /
OFF or ON
OFF: Brake pedal released
ON: Brake pedal depressed
-
Vehicle Spd 1 (ABS/VSC)
Vehicle speed signal from skid control ECU (brake actuator assembly) via CAN communication /
Min.: 0.00 km/h (0 mph), Max.: 327.67 km/h (203.6 mph)
Min.: 0.00 km/h (0 mph), Max.: 327.67 km/h (203.6 mph)
-
Steering Angle
Steering wheel steering angle amount /
Min.: -49152.0 deg, Max.: 49150.5 deg
Actual steering angle
Turned right: Negative value
Turned left: Positive value
Details of relevant Data List items (Selected system: ABS/VSC/TRC)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / ABS/VSC/TRC / Data List.
Read the Data List according to the display on the GTS.
Table 16. ABS/VSC/TRC Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Stop Light SW
Stop light switch assembly /
OFF or ON
OFF: Brake pedal released
ON: Brake pedal depressed
-
Steering Angle Value
Steering angle value/ min.: -3276.8°, max.: 3276.7°
-
During steering operation: Changes in proportion with steering wheel rotation
Vehicle Speed
Maximum speed sensor reading/ min.: 0 km/h (0 mph), max.: 326 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 speed/ min.: 0 rpm, max.: 65535 rpm
When engine speed is constant: No large fluctuations
Details of relevant Data List items (Selected system: EMPS)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / EMPS / Data List.
Read the Data List according to the display on the GTS.
Table 17. EMPS Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Engine Revolution
Engine speed /
Min.: 0 rpm, Max.: 12800 rpm
No significant fluctuation
The engine is running at a constant speed.
Details of relevant Data List items (Selected system: Combination Meter)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Combination Meter / Data List.
Read the Data List according to the display on the GTS.
Table 18. Combination Meter Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Vehicle Speed Meter
Vehicle speed/Min.: 0 (0), Max.: 255 (158)
Almost same as actual vehicle speed (when driving)
Unit: km/h (mph)
Engine Rpm
Engine speed/Min.: 0, Max.: 12750
Idling: 700 to 800
Unit: rpm
Coolant Temperature
Engine coolant temperature/Min.: 0 (0), Max.: 127.5 (261.5)
After warming up: 80 to 95 (176 to 203)
Unit: °C (°F)
If the value is 0 (0), the sensor circuit is open.
If the value is 127.5 (261.5), the sensor circuit is shorted.
Details of relevant Data List items (Selected system: Air Conditioner)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Air Conditioner / Data List.
Read the Data List according to the display on the GTS.
Table 19. Air Conditioner Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Ambient Temp Sensor
Ambient temperature sensor /
Min.: -23.3°C (-9.94°F), Max.: 65.95°C (150.71°F)
Actual ambient temperature displayed
Open in the circuit: -23.3°C (-9.94°F).
Short in the circuit: 65.95°C (150.71°F).
Engine Coolant Temp
Engine coolant temperature /
Min.: 1.3°C (34.34°F), Max.: 90.55°C (194.99°F)
Actual engine coolant temperature displayed.
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Details of relevant Data List items (Selected system: Main Body)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Main Body / Data List.
Read the Data List according to the display on the GTS.
Table 20. Main Body Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
D Door Courtesy SW
Driver side door courtesy light switch signal /
OFF or ON
OFF: Driver side door courtesy light switch off
ON: Driver side door courtesy light switch on
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P Door Courtesy SW
Front passenger side door courtesy light switch signal /
OFF or ON
OFF: Front passenger side door courtesy light switch off
ON: Front passenger side door courtesy light switch on
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RL Door Courtesy SW
Rear door courtesy light switch LH signal /
OFF or ON
OFF: Rear door courtesy light switch RH off
ON: Rear door courtesy light switch RH on
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RR Door Courtesy SW
Rear door courtesy light switch RH signal /
OFF or ON
OFF: Rear door courtesy light switch LH off
ON: Rear door courtesy light switch LH on
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Details of relevant Data List items (Selected system: Power Source Control)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Power Source Control / Data List.
Read the Data List according to the display on the GTS.
Table 21. Power Source Control Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Shift P Signal
Shift P position signal /
OFF or ON
OFF: Shift lever not in P
OFF: Shift lever not in P
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Stop Light Switch1
Stop light switch /
OFF or ON
OFF: Brake pedal released
ON: Brake pedal depressed
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Details of relevant Data List items (Selected system: Navigation System)
Tip: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.
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.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Navigation System / Data List.
Read the Data List according to the display on the GTS.
Table 22. Navigation System Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Reverse Signal
Reverse signal /
OFF or ON
OFF: Reverse not selected
ON: Reverse selected
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