Test H: LFC 19 or 21 DTC B2293 - Restraint System - Air Bag Fault

PINPOINT TEST H: LFC 19 OR 21 DTC B2293 - RESTRAINT SYSTEM - AIR BAG FAULT

Normal Operation
The restraints control module (RCM) monitors all front air bag module circuits for faults. The RCM will set a DTC if a short to battery or short to ground fault is detected. The RCM will also set a DTC if the loop resistance is less than 1.36 ohms or greater than 4.70 ohms for the driver air bag loop 1 or loop 2 and less than 1.04 ohms or greater than 3.72 ohms for the passenger air bag loop 1 or loop 2. The normal expected resistance range of driver air bag is 1.84 to 3.96 ohms and 1.50 to 3.04 ohms for the passenger air bag. If a driver air bag loop resistance is between 1.36 and 1.84 or between 3.96 and 4.70 ohms and a passenger air bag resistance is between 1.04 and 1.50 or between 3.04 and 3.72 ohms, a DTC may or may not set, yet there exists a strong potential for an intermittent fault. If the RCM detects a fault on any of the front air bag circuits, it will store DTC B2293 in memory and send a message to the instrument cluster module to flash a LFC 19 or 21 (or higher priority code if one exists) on the air bag warning indicator.

Part 1:

Part 2:

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Clockspring
- Driver air bag module
- Passenger air bag module
- RCM