L: LFC 34/DTC B1934 - Driver Air Bag Circuit Resistance Low

Normal Operation
The Restraints Control Module (RCM) monitors the resistance of the driver air bag ignitor by measuring the resistance between pins 3 and 4. If the RCM detects low resistance between these pins, it will store a Diagnostic Trouble Code (DTC) B1934 in memory and flash a Lamp Fault Code (LFC) 34 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
Driver air bag low resistance can be caused by:
- a short in the air bag sliding contact windings.
- a short in the wiring harness.
- a low resistance in the driver air bag module.
- an RCM internal concern.
- a worn or damaged connector shorting bar (harness side).
- a worn or damaged connector camming beam (component side).

Pinpoint Test Steps:

L1 - L2:

L3 - L4:

L5 - L6: