Action Taken
Diagnostic Energy Reserve Module (DERM) turns on INFLATABLE RESTRAINT indicator light.
NOTE:
Test numbers refer to numbers on diagnostic chart. For circuit number identification, see WIRING DIAGRAMS.
WARNING:
To avoid air bag deployment while trouble shooting SIR system, only use test equipment specified in diagnostic charts. Under no circumstances should battery powered test equipment or test light be used. Carefully follow all instructions.
- Checks if fault is in steering column.
- Determines whether fault is in inflator module or SIR coil.
- Determines integrity of resistor module 430-ohm resistor and associated circuitry.
- Checks for a short between SENSE HIGH and FORCE HIGH circuits.
- Checks for a short to voltage on circuit No. 753.