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Home >> Mercury >> 1999 >> Sable V6-3.0L DOHC VIN S >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Pinpoint Tests >> P: DTC B1891-Air Bag Tone Warn. Indicator CKT Short to Batt/Ign

P: DTC B1891-Air Bag Tone Warn. Indicator CKT Short to Batt/Ign

Normal Operation
The air bag Electronic Crash Sensor (ECS) module monitors its connection to the Generic Electronic Module (GEM) at Pin 13. This connection is used to signal a chime if the air bag indicator is inoperative and another SRS fault exists. If the ECS detects a short to battery or ignition on the connection to the GEM, it will store a Diagnostic Trouble Code (DTC) B1891 in memory.

Possible Causes
An air bag tone warning indicator circuit short to battery or ignition could be caused by:
- a short to battery or ignition on Circuit 1083 (LB/BK).
- a damaged or inoperative GEM.

Pinpoint Test Steps:

P1-P5:




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