Rear Door LH Entry Lock Function does not Operate

DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Rear Door LH Entry Lock Function does not Operate
- Rear Door LH Entry Lock Function does not Operate

DESCRIPTION

If the rear door LH entry lock function does not operate but the entry unlock operation operates, the communication line between the vehicle and electrical key transmitter is normal. Either of the following may have occurred: 1) the entry lock switch is malfunctioning; or 2) the rear door ECU LH receives the entry lock switch ON signal, but is unable to send the signal to the certification ECU through CAN communication.

WIRING DIAGRAM

Refer to Rear Door LH Entry Lock and Unlock Functions do not Operate Rear Door LH Entry Lock and Unlock Functions do not Operate.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK POWER DOOR LOCK OPERATION

(a) When the multiplex network master switch assembly's door control switch is operated, check that the locked doors unlock.

Result





NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM Power Door Lock Control System
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH)

(a) Using the Techstream, read the Data List.

Rear Left Door (Rear door ECU LH)





OK:

On the screen, item changes between ON and OFF according to above chart.

NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door LH LOCK/UNLOCK Functions do not Operate) Problem Symptoms Table
OK -- Continue to next step.

3. READ VALUE USING TECHSTREAM (OUTSIDE HANDLE)

(a) Using the Techstream, read the Data List.

Rear Left Door (Rear door ECU LH)





OK:

On the screen, item changes between ON and OFF according to above chart.

NG -- CHECK REAR DOOR OUTSIDE HANDLE LH
OK -- Continue to next step.

4. CHECK REAR DOOR ECU LH (OPERATION)

(a) Replace the rear door ECU LH with a new one or normally functioning one Components.

(b) Check that the entry function operates normally.

OK:

Operates normally

NG -- REPLACE CERTIFICATION ECU

OK -- END (REAR DOOR ECU LH IS DEFECTIVE)

5. CHECK REAR DOOR OUTSIDE HANDLE LH





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

Standard resistance:





NG -- REPLACE REAR DOOR OUTSIDE HANDLE LH Components
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE LH - REAR DOOR ECU LH)





(a) Disconnect the d1 handle connector.

(b) Disconnect the O14 ECU connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE LH - DOOR ELECTRICAL KEY OSCILLATOR)





(a) Disconnect the d1 handle connector.

(b) Disconnect the d2 oscillator connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)

(a) Replace the door electrical key oscillator with a new one or normally functioning one Components.

(b) Check that the entry function operates normally.

OK:

Operates normally

NG -- CHECK REAR DOOR ECU LH (OPERATION)

OK -- END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

9. CHECK REAR DOOR ECU LH (OPERATION)

(a) Replace the rear door ECU LH with a new one or normally functioning one Components.

(b) Check that the entry function operates normally.

OK:

Operates normally

NG -- REPLACE CERTIFICATION ECU

OK -- END (REAR DOOR ECU LH IS DEFECTIVE)