Pinpoint Tests AO: The Headlamps On Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AO: 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 PARK or HEADLAMP 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.

This pinpoint test is intended to diagnose the following:

- Door ajar indication
- SJB
- IC



PINPOINT TEST AO: THE HEADLAMPS ON WARNING CHIME IS INOPERATIVE

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AO1 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 AO2.

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

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AO2 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 AO3.

No
REFER to Lighting and Horns. Testing and Inspection

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AO3 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.
- Does the door ajar warning indicator operate correctly?

Yes
GO to AO4.

No
Go To Pinpoint Test X. Pinpoint Test X: The Door Ajar Warning Indicator Is Never/Always On

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AO4 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 headlamp on 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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