Test Y: LFC 37/DTC B1996 or B1997 - Pass. Side Air Bag Circuit Short to Batt./Pass. Side Air Bag Circuit Short to Gnd.

Y1:

Y2:

Y3 - Y4:

Y4 - Y5:

Y6:

Normal Operation
The Restraints Control Module (RCM) checks for passenger side air bag circuit shorts to battery and ground by monitoring circuits 1259 (WH/YE) and 1260 (BN/YE) at RCM C310b pins 6 and 7. If the RCM detects a short to battery or ground on either of these pins, it will store Diagnostic Trouble Code (DTC) B1996 or B1997 in memory and flash Lamp Fault Code (LFC) 37 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger side air bag circuit short to battery or ground can be caused by:
^ a short to battery or ground on circuit 1259 (WH/YE) or 1260 (BN/YE).
^ a short to battery or ground in the passenger side air bag module.
^ an RCM internal fault.