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Home >> Mercury >> 2005 >> Mountaineer 2WD V8-4.6L SOHC VIN W >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Pinpoint Tests >> Test J: LFC 42, 43, 44, 45 and 46/DTC B2296 - Restraint System - Impact Sensor Fault

Test J: LFC 42, 43, 44, 45 and 46/DTC B2296 - Restraint System - Impact Sensor Fault

PINPOINT TEST J: LFC 42, 43, 44, 45 AND 46/DTC B2296 - RESTRAINT SYSTEM - IMPACT SENSOR FAULT


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Normal Operation
The restraints control module (RCM) checks all of the impact sensor circuits for faults. If the RCM detects one of the following faults on any of the impact sensor circuits, it will store diagnostic trouble code (DTC) B2296 in memory and flash, depending on the fault, either lamp fault code (LFC) 42, 43, 44, 45 or 46 (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.
- circuit short to voltage.
- circuit short to ground.

Possible Causes
A impact sensor status fault can be caused by:
- damaged wiring, terminals or connectors.
- a faulty impact sensor.
- incorrect sensor mounting.
- RCM is faulted.