Pinpoint Tests AT: The Headlamps On Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AT: 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, and the headlamp switch is in the PARK or HEADLAMP ON position. The SJB communicates the headlamp on chime request to the Instrument Cluster (IC) when the headlamps or parking lamps are on and the driver door is opened. 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
- SJB
- IC



PINPOINT TEST AT: THE HEADLAMPS ON WARNING CHIME IS INOPERATIVE

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AT1 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 the RUN for 6 seconds.
- Does the safety belt warning chime operate for approximately 6 seconds?

Yes
GO to AT2.

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

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AT2 CHECK THE EXTERIOR LAMPS OPERATION


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

Yes
GO to AT3.

No
REFER to Lighting and Horns. Lighting and Horns

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AT3 CHECK THE DOOR AJAR WARNING INDICATOR OPERATION


- Ignition ON.
- Open then close the LH front door while observing the message center operation.
- Does the door ajar warning message display in the message center?

Yes
GO to AT4.

No
Go To Pinpoint Test AQ. Pinpoint Tests AQ: The Driver, Passenger, Rear Left, Rear Right Door Ajar Or Liftgate Warning Is Inoperative/Always On

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AT4 CARRY OUT THE HEADLAMP ON WARNING CHIME ACTIVE COMMAND USING THE SCAN TOOL


- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC door ajar warning chime (CHIME_H_LMP) active command. Command the headlamp on warning chime on.
- Does the door ajar warning chime sound?

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

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

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