Tests AB

PINPOINT TEST AB: THE AIR BAG WARNING INDICATOR IS NEVER/ALWAYS ON

Test AB1-AB4:

Test AB4-AB6:

Normal Operation
The RCM is hardwired to the instrument cluster through circuit 608 (BK/YE). When the RCM detects a system concern, a DTC will be set and the RCM will signal the instrument cluster to illuminate the AIR BAG warning indicator. DTC B1869 will be set if circuit 608 (BK/YE) is open or shorted to ground. DTC B1870 will be set if circuit 608 (BK/YE) is shorted to power.

Possible Causes
- circuit 608 (BK/YE) open, short to ground or short to power
- RCM
- instrument cluster