Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GU3F
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): Front Passenger Side Door Entry Lock Function does not Operate; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

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 (for front passenger door)).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream 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 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

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

    Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): PRECAUTION 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): PRECAUTION

  • 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 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): OPERATION CHECK

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 power 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 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 (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 TECHSTREAM (P-DOOR TRIGGER SWITCH)

(a) Turn the power switch off.

*a

Lock Sensor

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Open and close the front passenger door.

(f) 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 front passenger door.

(g) Read the Data List according to the display on the Techstream.

(h) 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

P-Door Trigger Switch

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

P-Door Trigger Switch

OK:

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

OK

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NG

4.

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

(a) Disconnect the O61 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K3 front door outside handle assembly (for front passenger door) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

O61-4 (CLG2) - K3-6 (ANT1)

Always

Below 1 Ω

O61-3 (CG2B) - K3-4 (ANT2)

Always

Below 1 Ω

O61-4 (CLG2) or K3-6 (ANT1) - Other terminals and body ground

Always

10 kΩ or higher

O61-3 (CG2B) or K3-4 (ANT2) - Other terminals and body ground

Always

10 kΩ or higher

(d) Reconnect the K3 front door outside handle assembly (for front passenger door) connector.

(e) Reconnect the O61 certification ECU (smart key ECU assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

READ VALUE USING TECHSTREAM (P-DOOR TRIGGER SWITCH)

(a) Turn the power switch off.

*a

Lock Sensor

(b) Connect all connectors.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Turn the Techstream on.

(f) Open and close the front passenger door.

(g) 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 front passenger door.

(h) Read the Data List according to the display on the Techstream.

(i) 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

P-Door Trigger Switch

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

P-Door Trigger Switch

OK:

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

OK

END (CONNECTOR WAS NOT CONNECTED SECURELY)
NG

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