Inside Handle Illumination Light Circuit

LIGHTING: LIGHTING SYSTEM: Inside Handle Illumination Light Circuit
- Inside Handle Illumination Light Circuit

DESCRIPTION

The inside handle illumination light illuminates when the door is opened and turns off when the door is closed.

WIRING DIAGRAM



















PROCEDURE

1. CHECK OPERATION OF INSIDE HANDLE ILLUMINATION

(a) When a door is opened, check that the following inside handle illumination lights illuminate.

Result:





D -- PERFORM ACTIVE TEST USING TECHSTREAM

C -- PERFORM ACTIVE TEST USING TECHSTREAM

B -- PERFORM ACTIVE TEST USING TECHSTREAM
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.

Driver Door (Multiplex network door ECU front LH)





OK:

Light illuminates.

NG -- REPLACE INSIDE HANDLE ILLUMINATION (FRONT LH)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

3. REPLACE INSIDE HANDLE ILLUMINATION (FRONT LH)

(a) Temporarily replace the inside handle illumination (front LH) with a new or normally functioning one.

(b) Check that the illumination light illuminates.

OK:

Inside handle illumination light illuminates.

OK -- END
NG -- Continue to next step.

4. CHECK WIRE HARNESS (DOOR ECU FRONT LH - INSIDE HANDLE ILLUMINATION (FRONT LH))

(a) Disconnect the M9 ECU connector.





(b) Disconnect the Q9 light connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

5. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.

Passenger Door (Multiplex network door ECU front RH):





OK:

Light illuminates.

NG -- REPLACE INSIDE HANDLE ILLUMINATION (FRONT RH)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

6. REPLACE INSIDE HANDLE ILLUMINATION (FRONT RH)

(a) Temporarily replace the inside handle illumination (front RH) with a new or normally functioning one.

(b) Check that the illumination light illuminates.

OK:

Inside handle illumination light illuminates.

OK -- END
NG -- Continue to next step.

7. CHECK WIRE HARNESS (DOOR ECU FRONT RH - INSIDE HANDLE ILLUMINATION (FRONT RH))

(a) Disconnect the M4 ECU connector.





(b) Disconnect the Q1 light connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

8. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.

Rear Left Door (Multiplex network door ECU rear LH)





OK:

Light illuminates.

NG -- REPLACE INSIDE HANDLE ILLUMINATION (REAR LH)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

9. REPLACE INSIDE HANDLE ILLUMINATION (REAR LH)

(a) Temporarily replace the inside handle illumination (rear LH) with a new or normally functioning one.

(b) Check that the illumination light illuminates.

OK:

Inside handle illumination light illuminates.

OK -- END
NG -- Continue to next step.

10. CHECK WIRE HARNESS (DOOR ECU REAR LH - INSIDE HANDLE ILLUMINATION (REAR LH))

(a) Disconnect the O7 ECU connector.





(b) Disconnect the S7 light connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

11. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.

Rear Right Door (Multiplex network door ECU rear RH)





OK:

Light illuminates.

NG -- REPLACE INSIDE HANDLE ILLUMINATION (REAR RH)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

12. REPLACE INSIDE HANDLE ILLUMINATION (REAR RH)

(a) Temporarily replace the inside handle illumination (rear RH) with a new or normally functioning one.

(b) Check that the illumination light illuminates.

OK:

Inside handle illumination light illuminates.

OK -- END
NG -- Continue to next step.

13. CHECK WIRE HARNESS (DOOR ECU REAR RH - INSIDE HANDLE ILLUMINATION (REAR RH))

(a) Disconnect the O3 ECU connector.





(b) Disconnect the S3 light connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE