Test R: LFC 31/DTC B2233 or B2235 - Passenger Air Bag Squib 2 CKT Open/Resistance Low

R1:

R2:

R3 - R4:

R5 - R6:

Normal Operation
The Restraints Control Module (RCM) monitors the passenger air bag squib 2 circuit loop at RCM C310b pins 20 and 21, circuits 1518 (RD/WH) and 1519 (ON/RD). If the RCM detects a low resistance (less than 1.4 ohms) or an open circuit (greater than 4.6 ohms), it will store Diagnostic Trouble Code (DTC) B2233 or B2235 in memory and flash Lamp Fault Code (LFC) 31 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger air bag squib 2 circuit open or low resistance can be caused by:
^ an open or high resistance on circuit 1518 (RD/WR) or 1519 (ON/RD).
^ circuits 1518 (RD/WR) and 1519 (ON/RD) shorted together.
^ a passenger air bag module internal fault.
^ an RCM internal fault.