Warning Lamp Open/Shorted (Active)

Test 1 - 3:

Test 4 - 8:

SYMPTOM
WARNING LAMP OPEN/SHORTED (ACTIVE)

WHEN MONITORED
Continuously with the ignition ON.

SET CONDITION
ACM monitors CCD Bus for airbag warning lamp diagnostic message from instrument cluster. Message is transmitted every second, and upon change of lamp state, by cluster. The message will contain the status of the bulb and the bulb driver.

POSSIBLE CAUSES
- Warning lamp open/short DTC
- MIC bulb defective
- MIC driver defective
- MIC driver or bulb no response
- Active DTC present
- ACM, MIC bulb circuit
- ACM, warning lamp circuit
- ACM, warning lamp CKT open/short