Pinpoint Tests AH: The Headlamps On Warning Chime Does Not Operate Correctly

Instrumentation, Message Center and Warning Chimes

Pinpoint Test AH: The Headlamps On Warning Chime Does Not Operate Correctly

Normal Operation

The Lighting Control Module (LCM) monitors the headlamp switch input and the driver door ajar switch input, sounding a chime if the driver door is open, the headlamps or parking lamps are on, and the ignition switch is not in the ON position.

This pinpoint test is intended to diagnose the following:

- LCM



PINPOINT TEST AH: THE HEADLAMPS ON WARNING CHIME DOES NOT OPERATE CORRECTLY

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AH1 CHECK THE PARKING LAMPS OPERATION


- Place the headlamp switch in the PARKING LAMPS ON position.
- Are the parking lamps illuminated?

Yes
GO to AH2.

No
REFER to Lighting and Horns. Lighting and Horns

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AH2 CHECK THE INTERIOR LAMPS OPERATION


- Open the driver door and observe the interior lamps.
- Are the interior lamps illuminated?

Yes
INSTALL a new LCM. TEST the system for normal operation.

No
REFER to Courtesy Lamp. Courtesy Lamp

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