Pinpoint Tests AP: The Headlamps On Warning Chime Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AP: 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 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 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 concern
- Headlamp concern
- SJB
- IC
PINPOINT TEST AP: THE HEADLAMPS ON WARNING CHIME IS INOPERATIVE
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AP1 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 AP2.
No
REFER to Lighting and Horns.
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AP2 CHECK THE DOOR AJAR RECONFIGURABLE INDICATOR OPERATION
- Ignition ON.
- Open then close the LH front door while observing the door ajar message center indicator in the IC message center or the integrated display.
- Does the door ajar message center indicator operate correctly?
Yes
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.
If the concern remains, REINSTALL the original SJB and INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.
No
GO to Pinpoint Test AE. Pinpoint Tests AE: The Door Ajar Message Center Warning Indicator Is Never/Always On
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