Test F: DTC B1891 - Air Bag Tone Warning Indicator Circuit Short To Battery

PINPOINT TEST F: DTC B1891 - AIR BAG TONE WARNING INDICATOR CIRCUIT SHORT TO BATTERY

Lamp Fault Codes (LFCs)
The following LFC indicates the specific fault associated with DTC B1891:







Normal Operation
The restraints control module (RCM) monitors its connection to the lighting control module (LCM) at C310a pin 23. This connection is used to signal a chime if the air bag warning indicator is inoperative and another supplemental restraint system (SRS) fault exists.

If the RCM detects a short to battery on the connection to the LCM, it will store DTC B1891 in memory and flash LFC 10-15 on the air bag warning indicator.

- DTC B1891 Air Bag Tone Warning Indicator Circuit Short to Battery - If the RCM detects a short to battery on the air bag tone warning indicator circuit, it will set this DTC.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- LCM
- RCM

F1-F2:

F3-F5: