M: LFC 34/DTC B1934 - Driver Air Bag Circuit Resistance Low
Normal OperationThe 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 could 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.
Pinpoint Test Steps: