K: LFC 33/DTC B1933 - Passenger Air Bag Circuit Resistance High

Normal Operation
The Restraints Control Module (RCM) monitors the resistance of the passenger air bag ignitor by measuring the resistance between pins 6 and 7. If the RACON detects high resistance between these pins, it will store a Diagnostic Trouble Code (DTC) B1933 in memory and flash a Lamp Fault Code (LFC) 33 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger air bag high resistance could be caused by:
- a poor connection or corrosion in the passenger air bag module circuits.
- an open circuit or high resistance in the wiring harness.
- an open circuit or high resistance in the passenger air bag module.
- an RCM internal concern.

Pinpoint Test Steps:

K1-K2:

K3-K4:

K5: