Pinpoint Test E: The Demand Lamps Are Inoperative

Interior Lighting

Pinpoint Tests

Pinpoint Test E: The Demand Lamps Are Inoperative

Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number

Normal Operation

The Smart Junction Box (SJB) provides voltage to the demand lamps through circuit 53 (BK/LB). Ground for the demand lamps is provided through circuit 1205 (BK).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Interior lamp



PINPOINT TEST E: THE DEMAND LAMPS ARE INOPERATIVE

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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E1 CHECK THE COURTESY LAMP OPERATION


- Ignition OFF.
- Attempt to turn the courtesy lamps on by opening the doors and using the instrument panel dimmer switch.
- Does the courtesy lamp turn on?

Yes
GO to E2.

No
GO to Symptom Chart for correct diagnosis. Symptom Related Diagnostic Procedures

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E2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN


- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Disconnect: Overhead Console C930 (Without Convertible Top).
- Disconnect: Overhead Console C9013 (With Convertible Top).
- For vehicles without a convertible top, measure the resistance between the overhead console C930-3, circuit 1205 (BK), harness side and ground.




- For vehicles with a convertible top, measure the resistance between the overhead console C9013-3, circuit 1205 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new overhead console. TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

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