Test J: LFC 33/DTC B1933 - Passenger Air Bag Resistance High

Pinpoint Test J1:

Pinpoint Test J2:

Pinpoint Test J3-J4:

Pinpoint Test J5:

Pinpoint Test J: LFC 33/DTC B1933 - Passenger Air Bag Resistance High

Normal Operation

The air bag Electronic Crash Sensor (ECS) module monitors the resistance of the passenger air bag ignitor by measuring the resistance between pins 14 and 28. If the ECS detects high resistance between these pins, it will store a Diagnostic Trouble Code (DTC) B1933 in memory and flash a Lamp Fault Code (LFC) 33 (or higher priority code if one exists) on the air bag indicator.

Possible Causes

A passenger air bag high resistance can be caused by:
- a poor connection or corrosion in the passenger air bag module circuits.
- an open circuit or high resistance in the wiring harness.
- an open circuit or high resistance in the passenger air bag module.
- a damaged or inoperative ECS module.