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

Pinpoint Test K1:

Pinpoint Test K2:

Pinpoint Test K3:

Pinpoint Test K4-K5:

Pinpoint Test K6:

Pinpoint Test K: LFC 34/DTC B1934 Driver Air Bag Circuit Resistance Low

Normal Operation

The air bag Electronic Crash Sensor (ECS) module monitors the resistance of the driver air bag ignitor by measuring the resistance between pins 1 and 15. If the ECS 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 damaged or inoperative ECS module.