Test U: The Air Bag Warning Indicator Is Never/Always On

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

U1-U2:

U2-U4:

U4-U7:

Normal Operation
The air bag warning indicator is powered through the instrument cluster when the ignition switch is in the START/RUN position. The instrument cluster monitors the control circuit 608 (BK/YE) and illuminates the air bag warning indicator based upon the air bag signal received from the restraint control module (RCM). The instrument cluster illuminates the air bag warning indicator when it receives an open (no ground) from the RCM on control circuit 608 (BK/YE). The instrument cluster turns off the air bag warning indicator if it receives a ground signal from the RCM on control circuit 608 (BK/YE).

Possible Causes
- circuit 608 (BK/YE) open, short to ground, or short to battery
- restraint control module (RCM)
- instrument cluster