Test L: LFC 42/DTC B2296 - Restraint System - Impact Sensor Fault
PINPOINT TEST L: LFC 42/DTC B2296 - RESTRAINT SYSTEM - IMPACT SENSOR FAULTL1-L3:
L4-L6:
L6-L7:
L8-L9:
L10-L12:
L13-L14:
Normal Operation
The front impact severity sensor provides data to the RCM for use in calculating impact severity. This is accomplished using various electrical and electromechanical sensor(s) throughout the vehicle.
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 lamp fault code (LFC) 42 (or higher priority code if one exists) on the air bag indicator.
Fault Conditions
The RCM monitors for the following fault conditions:
- Low resistance
- High resistance or circuit open
- Circuit short to voltage
- Circuit short to ground
Possible Causes
A impact sensor fault can be caused by
- damaged wiring, terminals or connectors.
- a faulty impact sensor.
- incorrect sensor mounting.
- a faulted RCM.