ENTRY AND START SYSTEM(for Entry Function) All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate

DESCRIPTION

When the entry operation and wireless operation of the door lock functions do not operate, a malfunction or wave interference may be occurring in either of the following: 1) the signal communication line between the door control receiver and certification ECU (smart key ECU assembly) (the line used for entry and wireless operations); or 2) the electrical key transmitter sub-assembly. If the entry lock and wireless lock operations cannot be performed, there may be electrical key transmitter sub-assembly malfunctions, wave interference or problems in the communication which is used for the entry and wireless function between the door control receiver and certification ECU (smart key ECU assembly).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Note

When using the GTS with the vehicle power switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry & Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
The entry and start system (for Entry Function) uses a LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication system is functioning properly.
Before replacing the certification ECU (smart key ECU assembly), refer to the entry and start system (for Entry Function) precaution Click here.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Click here.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.
After repair, confirm DTC does not reoccur by performing the "DTC Output Confirmation Operation".
Door control receiver has a constant voltage (5 V) supply circuit connected to terminal "+5".

PROCEDURE

CHECK AUXILIARY BATTERY VOLTAGE
1. Measure the voltage of the vehicle auxiliary battery.
  
  Standard voltage
  
  11 to 14 V
  
  Tech Tips
  
  It may be possible to tell whether the vehicle auxiliary battery is discharged by operating the horn.
  
  If the voltage is below 11 V, recharge or replace the vehicle auxiliary battery before proceeding.
NEXT
CHECK FOR DTC
1. Open the driver door using the mechanical key built into the electrical key transmitter sub-assembly.
2. Connect the GTS and check for DTCs Click here.
  
  Tech Tips
  
  When using the GTS with the vehicle power switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry & Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
  
  OK
  
  DTC is not output.
NG
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

OK
CHECK POWER DOOR LOCK CONTROL SYSTEM
1. When the door control switch on the power window regulator master switch assembly on the driver door is operated, check that the doors unlock and lock according to the switch operation Click here.
  
  OK
  
  Door locks operate normally.
NG
GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

OK

Standard voltage
11 to 14 V

OK
DTC is not output.

OK
Door locks operate normally.

CHECK KEY DIAGNOSTIC MODE

Check the following antennas in the key diagnostic mode Click here.

Select either channel 1 or channel 2 and inspect the key diagnostic mode for each channel.

Tech Tips

If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter cannot be detected by channel 2 due to a malfunction, such as wave interference.

Text in Illustration
*A	for LHD
*B	for RHD
*a	0.7 to 1 m (2.30 to 3.28 ft.)

Check the electrical key antenna (for driver door):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless door lock buzzer sounds.

Text in Illustration
*A	for LHD
*B	for RHD
*a	0.7 to 1 m (2.30 to 3.28 ft.)

Check the electrical key antenna (for front passenger door):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for front passenger door), check that the wireless door lock buzzer sounds.

Text in Illustration

*a Inspection Point

Check the No. 1 indoor electrical key antenna (front floor):

When the electrical key transmitter sub-assembly is at the inspection point, check that the wireless door lock buzzer sounds.
Text in Illustration

*a Inspection Point

Check the No. 2 indoor electrical key antenna (inside luggage):

When the electrical key transmitter sub-assembly is at the inspection point, check that the wireless door lock buzzer sounds.

Text in Illustration
*a	Inspection Point
*b	Approximately 0.7 m (2.30 ft.)

Check the electrical key antenna (outside luggage):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage), check that the wireless door lock buzzer sounds.

OK
Wireless door lock buzzer sounds.

Result
Result	Proceed to
Diagnostic mode inspections fail for both channels	A
Diagnostic mode inspections succeed for both channels	B
Diagnostic mode inspection succeeds for only one of the channels	C

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

CHECK WAVE ENVIRONMENT Click here

CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

Check if there are any other registered electrical key transmitter sub-assemblies.

Result
Result	Proceed to
There are no other registered electrical key transmitter sub-assemblies	A
There is another registered electrical key transmitter sub-assemblies	B

CHECK ENTRY DOOR LOCK OPERATION Click here

ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER)
1. Register a new electrical key transmitter sub-assembly (Refer to Service Bulletin).
NEXT
CHECK ENTRY DOOR LOCK OPERATION
1. Using another registered electrical key transmitter sub-assembly, check if an entry lock/unlock operation can be performed twice in succession.
  
  OK
  
  Entry lock/unlock operate normally.
NG
CHECK WAVE ENVIRONMENT Click here

OK

OK
Entry lock/unlock operate normally.

CHECK TRANSMITTER BATTERY

Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.

Press and hold the lock switch of the transmitter for 5 seconds and check the number of times that the transmitter LED illuminates.

Result
Result	Proceed to
Transmitter LED does not illuminate when switch is pressed and held	A
Transmitter LED illuminates 3 times or more when switch is pressed and held	B
Transmitter LED illuminates once or twice but not a third time	C

Tech Tips

The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.2 V or less Click here
Even if the transmitter battery is depleted, it is still possible to start the hybrid control system by holding the electrical key transmitter sub-assembly against the power switch, depressing the brake pedal and pressing the power switch.

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

REPLACE TRANSMITTER BATTERY Click here

INSPECT TRANSMITTER BATTERY (VOLTAGE)

Remove the transmitter battery from the electrical key transmitter sub-assembly that does not operate Click here.
Text in Illustration

*1 Lead Wire

Attach a lead wire (0.60 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal.

Note

Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly.
Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.

Text in Illustration
*1	Lead Wire

Text in Illustration
*a	GND

Measure the voltage of the transmitter battery.

Tech Tips

When measuring the transmitter battery voltage, bring the electrical key transmitter sub-assembly within the lock entry operating range while operating the lock sensor of a door handle to perform the measurement.
Perform the measurement when the key is at room temperature.
The key sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. When this voltage is 2.2 V or less the Data List item "Key Low Battery" displays "Yes". Click here

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
Transmitter battery positive (+) - Transmitter battery negative (-)	Power switch off, all doors closed and lock sensor touched	2.3 to 3.2 V

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

REPLACE TRANSMITTER BATTERY Click here

CHECK WAVE ENVIRONMENT
1. Bring the electrical key transmitter sub-assembly near the door control receiver and perform a wireless and entry function operation check.
  Tech Tips
  - When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
  - If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
  - There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
  - If a tool for checking electric waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
  OK
  
  Wireless and entry functions operate normally.
OK
AFFECTED BY WAVE INTERFERENCE

NG

OK
Wireless and entry functions operate normally.

READ VALUE USING GTS (ACC SW, IG SW)

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Main Body / Data List.

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

Main Body
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
ACC SW	Power switch on (ACC) / OFF or ON	OFF: Power switch off ON: Power switch on (ACC)	-
IG SW	Power switch on (IG) / OFF or ON	OFF: Power switch off ON: Power switch on (IG)	-

TROUBLESHOOT MAIN BODY ECU Click here

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - AUXILIARY BATTERY AND BODY GROUND)

Disconnect the certification ECU (smart key ECU assembly) connector.

Text in Illustration
*a	Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))	-	-

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
F48-1 (E) - Body ground	Always	Below 1 Ω

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Condition	Specified Condition
F47-4 (CUTB) - Body ground	Always	11 to 14 V
F47-5 (+B) - Body ground	Always	11 to 14 V

Reconnect the certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DOOR CONTROL RECEIVER)

Disconnect the F46 certification ECU (smart key ECU assembly) connector.
Disconnect the K11 door control receiver connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
F46-15 (RCO) - K11-4 (+5)	Always	Below 1 Ω
F46-6 (RDAM) - K11-5 (DATA)	Always	Below 1 Ω
F46-7 (CSEL) - K11-2 (CSEL)	Always	Below 1 Ω
K11-1 (GND) - Body ground	Always	Below 1 Ω
F46-15 (RCO) - Body ground	Always	10 kΩ or higher
F46-6 (RDAM) - Body ground	Always	10 kΩ or higher
F46-7 (CSEL) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT DOOR CONTROL RECEIVER

Reconnect the F46 certification ECU (smart key ECU assembly) connector.
Reconnect the K11 door control receiver connector.

Text in Illustration
*a	Component with harness connected (Door Control Receiver)

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
K11-1 (GND) - Body ground	Always	Below 1 Ω

REPLACE DOOR CONTROL RECEIVER Click here

INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Reconnect the F46 certification ECU (smart key ECU assembly) connector.
Reconnect the K11 door control receiver connector.

Text in Illustration
*a	Component with harness connected (Door Control Receiver)

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection

Condition

Specified Condition

K11-4 (+5) - K11-1 (GND)

Procedure:

Power switch off
Electrical key transmitter subassembly switch pressed

Below 1 V → 4.5 to 5.5 V

K11-2 (CSEL) - K11-1 (GND)

Procedure:

Power switch off
All doors closed

Below 1 V → 4.5 to 6 V → Below 1 V

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

INSPECT DOOR CONTROL RECEIVER

Reconnect the F46 certification ECU (smart key ECU assembly) connector.
Reconnect the K11 door control receiver connector.

Text in Illustration
*a	Component with harness connected (Door Control Receiver)

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection

Condition

Specified Condition

K11-2 (CSEL) - K11-1 (GND)

Procedure:

Power switch off
All doors closed

Below 1 V → 4.5 to 6 V → Below 1 V

K11-5 (DATA) - K11-1 (GND)

Procedure:

All doors closed
All doors locked
Electrical key transmitter sub-assembly switch pressed

11 to 14 V pulse generation at regular intervals → Pulse generation

REPLACE DOOR CONTROL RECEIVER Click here

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
1. Replace the certification ECU (smart key ECU assembly) with a new one (Refer to Service Bulletin).
NEXT
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM
1. Check that the wireless door lock functions operate normally Click here.
  
  OK
  
  Wireless door lock functions operate normally.
OK
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

NG
REPLACE MAIN BODY ECU Click here
CHECK WAVE ENVIRONMENT
1. Bring the electrical key transmitter sub-assembly that was checked first near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck the key diagnostic mode Click here.
  Tech Tips
  - When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
  - If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
  - There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
  - If a tool for checking electric waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
  OK
  
  Wireless door lock buzzer sounds.
OK
AFFECTED BY WAVE INTERFERENCE

NG

CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

Check if there are any other registered electrical key transmitter sub-assemblies.

Result
Result	Proceed to
There are no other registered electrical key transmitter sub-assemblies	A
There is another registered electrical key transmitter sub-assemblies	B

CHECK WAVE ENVIRONMENT Click here

ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)
1. Register a new electrical key transmitter sub-assembly (Refer to Service Bulletin).
NEXT
CHECK WAVE ENVIRONMENT
1. Bring another registered electrical key transmitter sub-assembly near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck the key diagnostic mode Click here.
  
  OK
  
  Wireless door lock buzzer sounds.
OK
END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

NG

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DOOR CONTROL RECEIVER)

Disconnect the F46 certification ECU (smart key ECU assembly) connector.
Disconnect the K11 door control receiver connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
F46-6 (RDAM) - K11-5 (DATA)	Always	Below 1 Ω
F46-6 (RDAM) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Reconnect the F46 certification ECU (smart key ECU assembly) connector.
Reconnect the K11 door control receiver connector.

Text in Illustration
*a	Component with harness connected (Door Control Receiver)

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection

Condition

Specified Condition

K11-2 (CSEL) - K11-1 (GND)

Procedure:

Power switch off
All doors closed

Below 1 V → 4.5 to 6 V → Below 1 V

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

INSPECT DOOR CONTROL RECEIVER

Reconnect the F46 certification ECU (smart key ECU assembly) connector.
Reconnect the K11 door control receiver connector.

Text in Illustration
*a	Component with harness connected (Door Control Receiver)

Measure the voltage according to the value(s) in the table below.

Tech Tips

Inspection should be performed while the electrical key antenna check in key diagnostic mode is being performed on the failed channel (the channel in which the buzzer did not sound).

Standard Voltage

Tester Connection

Condition

Specified Condition

K11-5 (DATA) - K11-1 (GND)

Procedure:

All doors closed
All doors locked
Electrical key transmitter sub-assembly switch pressed

Below 1 V → 11 to 14 V → Below 1 V

REPLACE DOOR CONTROL RECEIVER Click here

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
1. Temporarily replace the certification ECU (smart key ECU assembly) with a new one (Refer to Service Bulletin).
NEXT
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM
1. Check that the wireless door lock functions operate normally Click here.
  
  OK
  
  Wireless door lock functions operate normally.
OK
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

NG
REPLACE MAIN BODY ECU Click here