Test G: LFC 34/DTC B1881/B1886 - Passenger Pretensioner Circuit Resistance High or Low

PINPOINT TEST G: LFC 34/DTC B1881/B1886 - PASSENGER PRETENSIONER CIRCUIT RESISTANCE HIGH OR LOW

G1-G3:

G3-G4:

G5-G6:

Normal Operation

NOTE: There is no restraint system diagnostic tool for the safety belt buckle pretensioners. If the ignition switch is turned to the RUN or START position with the safety belt buckle pretensioner electrical connector(s) disconnected, the DTC for an open circuit will be activated.

The safety belt pretensioners are activated by the RCM to remove excessive slack from the safety belt webbing when an impact exceeding preprogrammed limits is detected.

The restraints control module (RCM) monitors the resistance of the circuit to the passenger safety belt pretensioner for faults. If the RCM detects an open or resistance out of range on the passenger safety belt pretensioner circuits, it will store diagnostic trouble code (DTC) B1881 or B1886 in memory and flash lamp fault code (LFC) 34 (or higher priority code if one exists) on the air bag indicator.

Fault Conditions
The RCM monitors for the following fault conditions:
- low resistance.
- circuit open.
- high resistance.

Possible Causes
A safety belt pretensioner fault can be caused by:
- faulted wiring, terminals, or connectors.
- a faulted pretensioner.
- a faulted RCM.