Diesel Data: Automotive Repair

Test I

PINPOINT TEST I: LFC 18/DTC B1882 - PASSENGER PRETENSIONER CIRCUIT SHORTED TO BATTERY OR IGNITION


Test I1-I2:






Test I2-I3:






Test I4-I5:






Normal Operation
The restraints control module (RCM) monitors the circuit to the passenger belt pretensioner. When the RCM detects a circuit short to battery or ignition it will set lamp fault code (LFC) 18 and diagnostic test code (DTC) B1882.

Possible Causes
A short to battery or ignition on the passenger belt pretensioner circuit can be caused by:
- a short to battery or ignition on circuit 30S-JA34 (RD/BK).
- a short to battery or ignition on circuit 31S-JA34 (BK/RD).
- a faulted RCM.