Action Taken

DERM turns on INFLATABLE RESTRAINT indicator light.

NOTE: Test numbers refer to test numbers on diagnostic chart. For circuit number identification, see WIRING DIAGRAMS.

WARNING: To avoid air bag deployment while troubleshooting the 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.
Checks if fault is in either high side or low side of deployment loops.
Checks if short to voltage is on DRIVER SENSE LOW or PASS SENSE LOW circuit.
Since steering column is setting this code, replacing driver inflator module or SIR coil is necessary.

Fig 1: Code 25 - (Chart 1) Initiator Circuit Short To Ignition

Courtesy of GENERAL MOTORS CORP.