Diesel Data: Automotive Repair

Test C: The Headlamps On Warning Chime Is Inoperative

PINPOINT TEST C: 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
- Instrument cluster (IC)


C1-C5:






C6: