Operation CHARM: Car repair manuals for everyone.

M: LFC 35/DTC B1935 - Passenger Air Bag Circuit Resistance Low

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 RCM detects low resistance between these pins, it will store a Diagnostic Trouble Code (DTC) B1935 in memory and flash a Lamp Fault Code (LFC) 35 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
Passenger air bag low resistance could be caused by:
- a short in the wiring harness.
- a low resistance in the driver air bag module.
- an RCM internal concern.

Pinpoint Test Steps:

M1-M2:





M3-M4:





M5: