Door Courtesy Light Circuit

LIGHTING: LIGHTING SYSTEM: Door Courtesy Light Circuit
- Door Courtesy Light Circuit

DESCRIPTION

The door courtesy light turns on when the door is opened and turns off when closed.

WIRING DIAGRAM



















PROCEDURE

1. CHECK OPERATION OF COURTESY LIGHT AND OUTER SCUFF LIGHT

(a) When a door is opened, check that the following 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 courtesy light illuminates.

Driver Door (Multiplex network door ECU front LH)





Result:





C -- REPLACE OUTER SCUFF LIGHT (FRONT DOOR LH)

B -- REPLACE COURTESY LIGHT (FRONT DOOR LH)

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

3. REPLACE COURTESY LIGHT (FRONT DOOR LH)

(a) Temporarily replace the courtesy light (front door LH) with a new or normally functioning one.

(b) Check that the courtesy light illuminates.

OK:

Courtesy light illuminates.

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

4. CHECK WIRE HARNESS (DOOR ECU FRONT LH - COURTESY LIGHT (FRONT DOOR LH))

(a) Disconnect the M9 ECU connector.





(b) Disconnect the Q15 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. REPLACE OUTER SCUFF LIGHT (FRONT DOOR LH)

(a) Temporarily replace the outer scuff light (front door LH) with a new or normally functioning one.

(b) Check that the outer scuff light illuminates.

OK:

Outer scuff light illuminates.

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

6. CHECK WIRE HARNESS (DOOR ECU FRONT LH - OUTER SCUFF LIGHT (FRONT DOOR LH))

(a) Disconnect the M9 ECU connector.





(b) Disconnect the Q14 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

7. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the courtesy light (front door RH) illuminates.

Passenger Door (Multiplex network door ECU front RH)





Result:





C -- REPLACE OUTER SCUFF LIGHT (FRONT DOOR RH)

B -- REPLACE COURTESY LIGHT (FRONT DOOR RH)

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

8. REPLACE COURTESY LIGHT (FRONT DOOR RH)

(a) Temporarily replace the courtesy light (front door RH) with a new or normally functioning one.

(b) Check that the courtesy light illuminates.

OK:

Courtesy light illuminates.

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

9. CHECK WIRE HARNESS (DOOR ECU FRONT RH - COURTESY LIGHT (FRONT DOOR RH))

(a) Disconnect the M4 ECU connector.





(b) Disconnect the Q8 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

10. REPLACE OUTER SCUFF LIGHT (FRONT DOOR RH)

(a) Temporarily replace the outer scuff light (front door RH) with a new or normally functioning one.

(b) Check that the outer scuff light illuminates.

OK:

Outer scuff light illuminates.

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

11. CHECK WIRE HARNESS (DOOR ECU FRONT RH - OUTER SCUFF LIGHT (FRONT DOOR RH))

(a) Disconnect the M4 ECU connector.





(b) Disconnect the Q7 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

12. PERFORM ACTIVE TEST USING TECHSTREAM

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

Rear Left Door (Multiplex network door ECU rear LH)





NG -- REPLACE COURTESY LIGHT (REAR DOOR LH)

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

13. REPLACE COURTESY LIGHT (REAR DOOR LH)

(a) Temporarily replace the courtesy light (rear door LH) with a new or normally functioning one.

(b) Check that the courtesy light illuminates.

OK:

Courtesy light illuminates.

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

14. CHECK WIRE HARNESS (DOOR ECU REAR LH - COURTESY LIGHT (REAR DOOR LH))

(a) Disconnect the O7 ECU connector.





(b) Disconnect the S6 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

15. PERFORM ACTIVE TEST USING TECHSTREAM

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

Rear Right Door (Multiplex network door ECU rear RH)





NG -- REPLACE COURTESY LIGHT (REAR DOOR RH)

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

16. REPLACE COURTESY LIGHT (REAR DOOR RH)

(a) Temporarily replace the courtesy light (rear door RH) with a new or normally functioning one.

(b) Check that the courtesy light illuminates.

OK:

Courtesy light illuminates.

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

17. CHECK WIRE HARNESS (DOOR ECU REAR RH - COURTESY LIGHT (REAR DOOR RH))

(a) Disconnect the O3 ECU connector.





(b) Disconnect the S2 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