Toyota Corolla Cross: Driver Side Door Entry Lock Function does not Operate

DESCRIPTION

If the entry lock function does not operate for the driver door only, but the entry unlock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the lock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door)).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• When using the GTS with the ignition 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 the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. 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 smart key system (for Entry Function) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.

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• Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.

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• Check that there are no electrical key transmitter sub-assemblies in the vehicle.
• After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) 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.

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OK:

Door locks operate normally.

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

2.	CHECK ENTRY OPERATION

(a) Check the entry lock function.

(1) Turn the ignition switch off.

*a Lock Sensor

(2) Open and close the driver door.

(3) 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 driver door.

(4) Touch the lock sensor of the front door outside handle assembly (groove on the front door outside handle) with 2 or more fingers for 2 seconds or more.

HINT:

• If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
• When checking the operation of the lock sensor again, make sure to perform the procedure from step (1).
• 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.

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

B

GO TO CHECK FOR INTERMITTENT PROBLEMS (VEHICLE CONTROL HISTORY (ROB))

A

3.	READ VALUE USING GTS (DRIVER SIDE LOCK SENSOR)

(a) Open and close the driver door.

*a Lock Sensor

(b) 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 driver door.

(c) Read the Data List according to the display on the GTS.

(d) Touch the lock sensor of the front door outside handle assembly (groove on the front door outside handle) with 2 or more fingers for 2 seconds or more.

HINT:

• If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
• When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).
• 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.

Body Electrical > Smart Key > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Driver Side Lock Sensor	Driver door touch sensor (lock sensor)	OFF or ON	OFF: Driver door touch sensor (lock sensor) not touched ON: Driver door touch sensor (lock sensor) 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.

Body Electrical > Smart Key > Data List

Tester Display
Driver Side Lock Sensor

OK:

The GTS display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

4.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))

(a) Disconnect the I222 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the L19 front door outside handle assembly (for driver door) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I222-16 (CLG1) - L19-4 (ANT1)	Always	Below 1 Ω
I222-15 (CG1B) - L19-6 (ANT2)	Always	Below 1 Ω
I222-16 (CLG1) or L19-4 (ANT1) - Other terminals and body ground	Always	10 kΩ or higher
I222-15 (CG1B) or L19-6 (ANT2) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the L19 front door outside handle assembly (for driver door) connector.

(e) Reconnect the I222 certification ECU (smart key ECU assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.	READ VALUE USING GTS (DRIVER SIDE LOCK SENSOR)

(a) Open and close the driver door.

*a Lock Sensor

(b) 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 driver door.

(c) Read the Data List according to the display on the GTS.

(d) Touch the lock sensor of the front door outside handle assembly (groove on the front door outside handle) with 2 or more fingers for 2 seconds or more.

HINT:

• If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
• When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).
• 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.

Body Electrical > Smart Key > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Driver Side Lock Sensor	Driver door touch sensor (lock sensor)	OFF or ON	OFF: Driver door touch sensor (lock sensor) not touched ON: Driver door touch sensor (lock sensor) 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.

Body Electrical > Smart Key > Data List

Tester Display
Driver Side Lock Sensor

OK:

The GTS display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

OK

END (CONNECTOR WAS NOT CONNECTED SECURELY)

NG

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)

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