B1878

Pinpoint Test 6: LFC17/DTC B1878 - Driver Pretensioner Circuit Short To Battery

Normal Operation
The restraints control module (RCM) monitors the circuit to the driver seat belt buckle pretensioner. When the RCM detects a circuit short to battery or ignition it will set lamp fault code (LFC) 17 and diagnostic test code (DTC) B1878.

Possible Causes
A driver pretensioner circuit short to battery or ignition can be caused by:
- a short to battery or ignition on circuit (LG/R).
- a short to battery or ignition on circuit (LG/B).
- a short to battery or ignition on the driver pretensioner.
- an RCM internal concern.

WARNING: The restraint system WDS or equivalent Tester Is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.

NOTE: If a seat equipped with a seat-mounted side air-bag and/or a safety belt pretensioner (if equipped) system is being serviced the air-bag system must be deactivated using the appropriate deactivation procedure in this section.

NOTE: Restraint system diagnostic tools MUST be installed under the seats in the side air-bag and safety belt pretensioner to floor connectors.

NOTE: Diagnostics or repairs are not to be performed on a side air-bag system and/or a safety belt pretensioner (if equipped) system with the seats in the vehicle. Prior to attempting to diagnose/repair the side air-bag system and/or safety belt pretensioner (if equipped) system the seats must be removed from the vehicle and the restraint system diagnostic tools must be installed in the side air-bag and the safety belt pretensioner (if equipped) connectors at the floor connectors. The restraint system diagnostic tools must be removed prior to operating the vehicle over the road.

NOTE: Diagnostics may be performed on seat systems other than the side air-bag or the safety belt pre-tensioner (if equipped) system (lumbar, climate controlled, heated, power seat track) with the seat installed in the vehicle as long as the restraint system diagnostic tools are installed under the seats in the side air-bag and safety belt pretensioner to floor connectors.

NOTE: After diagnosing/repairing a seat system, the restraint system diagnostic tools must be removed before operating the vehicle over the road.

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TEST DESCRIPTION