Toyota Yaris: Smart Key System (for Entry Function) / Front Passenger Side Door Entry Lock Function does not Operate

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System (for Entry Function) / Front Passenger Side Door Entry Lock Function does not Operate

DESCRIPTION

If the entry lock function does not operate for the front passenger door only, but the entry unlock function operates, the request code is being transmitted properly from the for passenger 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 RH).

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.

    Click here

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

    Click here

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

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.

Click here

OK:

Door locks operate normally.

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

2.

CHECK ENTRY OPERATION

(a) Check that the entry lock function.

(1) Turn the ignition switch off.

*a

Lock Sensor

(2) Open and close the front passenger door.

(3) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly RH and approximately 0.3 m (0.984 ft.) from the front passenger door.

(4) Touch the lock sensor of the front door outside handle assembly RH (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 (OPERATION HISTORY)

A

3.

READ VALUE USING GTS (PASSENGER SIDE LOCK SENSOR)

(a) Open and close the front passenger door.

*a

Lock Sensor

(b) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly RH and approximately 0.3 m (0.984 ft.) from the front passenger 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 RH (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

Passenger Side Lock Sensor

Front passenger door touch sensor (lock sensor)

OFF or ON

OFF: Front passenger door touch sensor (lock sensor) not touched

ON: Front passenger 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

Passenger Side Lock Sensor

OK:

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

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 RH)

(a) Disconnect the H46 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K4 front door outside handle assembly RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

H46-10 (CLG2) - K4-4 (ANT1)

Always

Below 1 Ω

H46-9 (CG2B) - K4-6 (ANT2)

Always

Below 1 Ω

H46-10 (CLG2) or K4-4 (ANT1) - Other terminals and body ground

Always

10 kΩ or higher

H46-9 (CG2B) or K4-6 (ANT2) - Other terminals and body ground

Always

10 kΩ or higher

(d) Reconnect the K4 front door outside handle assembly RH connector.

(e) Reconnect the H46 certification ECU (smart key ECU assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

READ VALUE USING GTS (PASSENGER SIDE LOCK SENSOR)

(a) Open and close the front passenger door.

*a

Lock Sensor

(b) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly RH and approximately 0.3 m (0.984 ft.) from the front passenger 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 RH (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

Passenger Side Lock Sensor

Front passenger door touch sensor (lock sensor)

OFF or ON

OFF: Front passenger door touch sensor (lock sensor) not touched

ON: Front passenger 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

Passenger Side Lock Sensor

OK:

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

OK

END (CONNECTOR WAS NOT CONNECTED SECURELY)
NG

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH

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