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

Pinpoint Test AV1:

Pinpoint Test AV2:

Pinpoint Test AV3:

Pinpoint Test AV4-AV5:

Pinpoint Test AV6:

Pinpoint Test AV: 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 clockspring windings.
- a short in the wiring harness.
- a low resistance in the driver air bag module.
- a closed shorting bar.
- a damaged camming beam.
- an RCM internal concern.