Pinpoint Tests AM: The Headlamps On Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AM: The Headlamps On Warning Chime Is Inoperative

Normal Operation

The Smart Junction Box (SJB) receives the headlamp switch status from the headlamp switch and the LH front door ajar status from the LH front door ajar switch through hardwired circuitry. The headlamps on warning chime sounds when the LH front door is opened with the ignition switch in the OFF position, the key is not in the ignition lock cylinder, and the headlamp switch is in the PARKING or HEADLAMPS ON position. The SJB communicates the headlamp on chime request to the Instrument Cluster (IC) based on headlamp or parking lamp and driver door inputs. The autolamps feature must not be selected for the headlamps on warning chime to operate.

This pinpoint test is intended to diagnose the following:

- Door ajar indication concern
- SJB
- IC



PINPOINT TEST AM: THE HEADLAMPS ON WARNING CHIME IS INOPERATIVE

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AM1 CHECK THE SAFETY BELT WARNING CHIME OPERATION


- Ignition OFF.
- Ignition ON.
- Monitor the safety belt warning chime when the ignition switch is transitioned from OFF to RUN for 6 seconds.
- Does the safety belt warning chime operate for approximately 6 seconds?

Yes
GO to AM2.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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AM2 CHECK THE EXTERIOR LAMPS OPERATION


- Ignition OFF.
- Place the headlamp switch in the PARKING or HEADLAMPS ON position.
- Do the headlamps or parking lamps operate?

Yes
GO to AM3.

No
REFER to Lighting and Horns.

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AM3 CHECK THE DOOR AJAR WARNING INDICATOR OPERATION


- Ignition ON.
- Open then close the LH front door while observing the door ajar warning indicator in the IC message center or the integrated display.
- Does the door ajar warning indicator operate correctly?

Yes
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.

No
GO to Pinpoint Test AA. Pinpoint Tests AA: The Door Ajar Warning Indicator Is Never/Always On

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