Diesel Data: Automotive Repair
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Tests AJ

PINPOINT TEST AJ: THE HEADLAMP ON REMINDER CHIME DOES NOT OPERATE CORRECTLY


Test AJ1-AJ4:






Normal Operation
The instrument cluster monitors the headlamp switch status through the headlamp signal circuit 9-LE21 (WH/GN) and the headlamp return circuit 9-LE29 (BN/GN). The instrument cluster sends a 5-volt reference voltage through the headlamp signal circuit to the headlamp switch and monitors the return voltage to determine the headlamp switch position. The instrument cluster, upon receipt of both the headlamp switch ON status and the driver door status, sounds the audible chime at a rate of 60 chimes per minute.

Possible Causes
- instrument cluster
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