Operation CHARM: Car repair manuals for everyone.

Test F

F1:






F2:






F3 - F4:






F5:






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 1079 (LG/RD).
^ a short to battery or ignition on circuit 1080 (LG/BK).
^ a short to battery or ignition on the driver pretensioner.
^ an RCM internal concern.