ENTRY AND START SYSTEM(for Entry Function) Rear Door RH Entry Lock and Unlock Functions do not Operate

DESCRIPTION

If the entry lock and unlock functions do not operate for the rear door RH only, the request code may not be being transmitted from the rear door RH or the rear door outside handle assembly RH (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and rear door outside handle assembly RH (electrical key antenna)), or there may be wave interference.

WIRING DIAGRAM

Figure 1. for LHD:

Figure 2. for RHD:

CAUTION / NOTICE / HINT

Note

When using the GTS with the power switch off, connect the GTS to the DLC3 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 Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start. 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 the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

Click here
Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
After repair, confirm that no DTCs are output.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.

Tech Tips

If the rear door RH entry lock and unlock functions do not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly).
If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether the malfunction was caused by wave interference.

Body Electrical > Entry&Start > Utility

Tester Display
Operation History

PROCEDURE

CHECK POWER DOOR LOCK CONTROL SYSTEM

When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK
Door locks operate normally.

Result

Proceed to
OK
NG

GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

CHECK FOR DTC

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes

Result

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

CHECK WAVE ENVIRONMENT

*a	Approximately 0.3 m (0.984 ft.)

Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the rear door outside handle assembly RH and perform an entry function check.

Click here

Tech Tips

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the rear door outside handle assembly RH
When the electrical key transmitter sub-assembly is brought near the rear door outside handle assembly RH, 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 radio 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.
When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively. (w/o Double Locking System)

Result

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

AFFECTED BY WAVE INTERFERENCE

READ VALUE USING GTS (PR-DOOR TOUCH SENSOR, PR-DOOR TOUCH SENSOR)

*a Unlock Sensor (Backside)

Turn the power switch off.
Open and close the rear door RH.
With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the rear door RH.
Check that the LED of the electrical key transmitter sub-assembly blinks.
Read the Data List according to the display on the GTS.

Touch the unlock sensor on the backside of the rear door outside handle assembly RH.

Tech Tips

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Entry&Start > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Dr-Door Touch Sensor	Rear door RH touch sensor (unlock sensor)*1	ON or OFF	ON: Rear door RH touch sensor (unlock sensor) touched OFF: Rear door RH touch sensor (unlock sensor) not touched	Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.
Pr-Door Touch Sensor	Rear door RH touch sensor (unlock sensor)*2	ON or OFF	ON: Rear door RH touch sensor (unlock sensor) touched OFF: Rear door RH touch sensor (unlock sensor) not touched	Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Dr-Door Touch Sensor

Rear door RH touch sensor (unlock sensor)*1

ON or OFF

ON: Rear door RH touch sensor (unlock sensor) touched

OFF: Rear door RH touch sensor (unlock sensor) not touched

Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Pr-Door Touch Sensor

Rear door RH touch sensor (unlock sensor)*2

ON or OFF

ON: Rear door RH touch sensor (unlock sensor) touched

OFF: Rear door RH touch sensor (unlock sensor) not touched

Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

*1: for RHD
*2: for LHD

Body Electrical > Entry&Start > Data List

Tester Display
Dr-Door Touch Sensor
Pr-Door Touch Sensor

OK
The GTS display changes correctly in response to the operation of the front door outside handle assembly RH.

Result

Proceed to
OK
NG

GO TO STEP 7 Click here

READ VALUE USING GTS (DR-DOOR TRIGGER SWITCH, PR-DOOR TRIGGER SWITCH)

*a Lock Sensor

Turn the GTS on.
Enter the following menus: Body Electrical / Entry&Start / Data List.
Read the Data List according to the display on the GTS.
Turn the power switch off.
Open and close the rear door RH.
Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the rear door RH.
Read the Data List according to the display on the GTS.

Touch the lock sensor of the front door outside handle assembly (for rear door RH).

Tech Tips

If the door does not lock even when touching the lock sensor, touch it with your palm.
When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Entry&Start > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Dr-Door Trigger Switch	Rear door RH touch sensor (lock sensor)*1	ON or OFF	ON: Rear door RH touch sensor (lock sensor) touched OFF: Rear door RH touch sensor (lock sensor) not touched	Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.
Pr-Door Trigger Switch	Rear door RH touch sensor (lock sensor)*2	ON or OFF	ON: Rear door RH touch sensor (lock sensor) touched OFF: Rear door RH touch sensor (lock sensor) not touched	Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Dr-Door Trigger Switch

Rear door RH touch sensor (lock sensor)*1

ON or OFF

ON: Rear door RH touch sensor (lock sensor) touched

OFF: Rear door RH touch sensor (lock sensor) not touched

Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

Pr-Door Trigger Switch

Rear door RH touch sensor (lock sensor)*2

ON or OFF

ON: Rear door RH touch sensor (lock sensor) touched

OFF: Rear door RH touch sensor (lock sensor) not touched

Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

*1: for RHD

*2: for LHD

Body Electrical > Entry&Start > Data List

Tester Display
Dr-Door Touch Sensor
Pr-Door Touch Sensor

Tech Tips

When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively. (w/o Double Locking System)

OK
The GTS display changes correctly in response to the operation of the rear door outside handle assembly RH.

Result

Proceed to
OK
NG

GO TO STEP 7 Click here

CHECK KEY DIAGNOSTIC MODE

Check the following antenna in key diagnostic mode.

Body Electrical > Entry&Start > Utility

Tester Display

Communication Check(Key Diag Mode)

Tester Display
Communication Check(Key Diag Mode)

Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

*a 0.7 to 1 m (2.30 to 3.28 ft.)

Check the electrical key antenna (for rear door RH):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the rear door outside handle assembly RH, check that the buzzer sounds.
Tech Tips
- Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
- If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

Result

Result	Proceed to
Buzzer does not sound	A
Buzzer sounds	B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - REAR DOOR OUTSIDE HANDLE ASSEMBLY RH)

Disconnect the L31 certification ECU (smart key ECU assembly) connector.
Disconnect the K5 rear door outside handle assembly RH connector.

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

Standard Resistance

for LHD:
Tester Connection	Condition	Specified Condition
L31-9 (CLG4) - K5-4 (ANT1)	Always	Below 1 Ω
L31-8 (CG4B) - K5-5 (ANT2)	Always	Below 1 Ω
L31-9 (CLG4) or K5-4 (ANT1) - Other terminals and body ground	Always	10 kΩ or higher
L31-8 (CG4B) or K5-5 (ANT2) - Other terminals and body ground	Always	10 kΩ or higher

for RHD:
Tester Connection	Condition	Specified Condition
L31-1 (CLG3) - K5-4 (ANT1)	Always	Below 1 Ω
L31-2 (CG3B) - K5-5 (ANT2)	Always	Below 1 Ω
L31-1 (CLG3) or K5-4 (ANT1) - Other terminals and body ground	Always	10 kΩ or higher
L31-2 (CG3B) or K5-5 (ANT2) - Other terminals and body ground	Always	10 kΩ or higher

Connect the L31 certification ECU (smart key ECU assembly) connector.

Result

Proceed to
OK
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO REAR DOOR ELECTRICAL KEY ANTENNA)

*a	Waveform 1

Using an oscilloscope, check the waveform.

Tester Connection

Condition

Tool Setting

Specified Condition

K5-4 (ANT1) - K5-5 (ANT2)

Procedure:

Power switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation

(electrical key transmitter sub-assembly brought outside detection area*)

5 V/DIV., 100 ms/DIV.

Pulse generation

(See waveform 1)

*: For details about the entry function detection area, refer to Operation Check.

Click here

Result

Proceed to
OK
NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

CHECK ENTRY LOCK OPERATION

Connect all connectors and check that the entry lock and unlock functions operate.

Click here

Result

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

REPLACE REAR DOOR OUTSIDE HANDLE ASSEMBLY RH

Replace the rear door outside handle assembly RH with a new one or the rear door outside handle assembly LH if it is functioning properly.

Click here

Result

Proceed to
NEXT

CHECK ENTRY LOCK OPERATION

Check that the entry lock and unlock functions operate.

Click here

Result

Result	Proceed to
Entry function operates normally	A
Entry function does not operate normally	B

END (REAR DOOR OUTSIDE HANDLE ASSEMBLY RH WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)