Test N: The Air Bag Warning Indicator Is Never On

PINPOINT TEST N: THE AIR BAG WARNING INDICATOR IS NEVER ON

N1-N2:

N2-N4:

Normal Operation
The restraints control module (RCM) is hardwired to the instrument cluster through control circuit 1632 (TN/LB). The instrument cluster monitors the air bag warning lamp control circuit for a ground signal. The instrument cluster turns off the air bag warning indicator when it receives a ground signal from the RCM on the control circuit. During prove-out and when the RCM detects a concern, the RCM provides a ground on the control circuit 1623 (TN/LB) and the instrument cluster turns on the air bag warning indicator.

Possible Causes
- Circuit 1632 (TN/LB) short to ground
- RCM
- Instrument cluster