B2293

PINPOINT TEST 11: DTC B2293 - RESTRAINT SYSTEM AIR BAG STATUS

Normal Operation
The restraints control module (RCM) checks all of the front air bag circuits for faults. It 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, depending on the fault, flash either lamp fault code (LFC) 19 or 21 (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
- a faulty air bag sliding contact
- a faulty driver air bag module
- a faulted RCM

A passenger air bag status fault can be caused by:
- damaged wiring, terminals or connectors
- a faulty passenger air bag module
- a faulted RCM

WARNING: Restraint system diagnostic tools are for service only. Tools must be removed prior to operating the vehicle over the road. Failure to remove restraint system diagnostic tools could result in injury and possible violation of vehicle safety standards.

WARNING: Do not handle, move or change the original horizontal mounting position of the RCM while the RCM is connected and the ignition switch is ON. Failure to follow these instructions may result in the inadvertent deployment of the safety canopy and risk of personal injury.

WARNING: Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.

WARNING: The safety belt pretensioner is a pyrotechnic device. Always wear safety glasses when repairing an air bag equipped vehicle and when handling a safety belt buckle pretensioner or safety belt retractor pretensioner. Never probe a pretensioner electrical connector. Doing so could result in pretensioner or air bag deployment and could result in personal injury.

WARNING: Never probe the electrical connector on a safety canopy module. Doing so can result in safety canopy deployment and could result in personal injury.

NOTE: After diagnosing or repairing a supplemental restraint system (SRS), the restraint system diagnostic tools must be removed before operating the vehicle over the road.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.

NOTE: If a seat equipped with a SRS component is being serviced, the SRS must be depowered.

Fault Navigation Table:

Use the given fault navigation table after step 1 and step 2 are carried out in pinpoint test 11. If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.

CAUTION: When installing a new RCM, always make sure the correct RCM is being installed. The RCM 40-pin connector is keyed differently for vehicles with safety canopies and side air bags than the 40-pin connector for vehicles without safety canopies and side air bags. Do not force the 40-pin connector onto the RCM. If the connector is forced onto the RCM, damage to the RCM and/or connector will occur.