Operation CHARM: Car repair manuals for everyone.

Test E

PINPOINT TEST E: LFC 53/DTC B1892 - AIR BAG TONE WARNING INDICATOR CIRCUIT SHORTED TO GROUND OR OPEN


Test E1:






Test E2:






Test E2-E3:






Test E4:






Test E5:






Test E6:






Normal Operation
The restraints control module (RCM) monitors its connection to the generic electronic module (GEM) at C2041a pin 22, circuit 1083 (LB/BK). This connection is used to signal a chime if the air bag indicator is inoperative and another SRS fault exists. If the RCM detects a short to voltage on the connection to the GEM, it will store diagnostic trouble code (DTC) B1891 in memory. The RCM will also flash lamp fault code (LFC) 53 (or a higher priority code if one exists) on the air bag indicator.

Possible Causes
An air bag tone warning indicator circuit short to ground or open can be caused by:
- damaged wiring, terminals, or connectors.
- GEM is faulted.
- RCM is faulted.