Test H: LFC 19 and 21/DTC B2293 - Restraint System - Air Bag Status - Vehicles Built Up to 03/2002
PINPOINT TEST H: LFC 19 AND 21 /DTC B2293 - RESTRAINT SYSTEM AIRBAG STATUS - VEHICLES BUILT UP TO 03/2002H1:
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Normal Operation
The restraints control module (RCM) checks all of the front air bag circuits for faults. If the RCM detects one of the following faults on any of the front air bag circuits, it will store diagnostic trouble code (DTC) B2293 in memory and flash either lamp fault code (LFC) 19 or 21 depending on the fault (or higher priority code if one exists) on the air bag indicator.
Fault Conditions
The RCM monitors for the following fault conditions:
- low resistance.
- circuit open.
- circuit short to voltage.
- circuit short to ground.
Possible Causes
A driver air bag status fault can be caused by:
- damaged wiring, terminals, or connectors.
- driver air bag sub-harness.
- a faulty clockspring.
- a faulty driver air bag module.
- a faulted RCM.