Test U

PINPOINT TEST U: LFC 17 /DTC B1878 - DRIVER PRETENSIONER CIRCUIT SHORT TO VOLTAGE

U1:

U2:

U3 - U4:

U5:

Normal Operation
The Restraints Control Module (RCM) monitors the circuit to the driver belt 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 short to battery or ignition on the driver belt pretensioner circuit can be caused by:
^ wiring, terminals, or connectors.
^ a short to battery or ignition on the driver belt pretensioner.
^ an RCM internal concern.