Tests AF: LFC 17/DTC B1878 - Driver Pretensioner CKT Shorted to Batt or Ign

Pinpoint Test AF1:

Pinpoint Test AF2:

Pinpoint Test AF3:

Pinpoint Test AF4-AF5:

Pinpoint Test AF: LFC 17/DTC B1878 - Driver Pretensioner Circuit Shorted to Battery or Ignition

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 Trouble Code (DTC) B1878.

Possible Causes

A short to battery or ignition on the driver belt pretensioner circuit 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 belt pretensioner.
- an RCM internal concern.