Action Taken

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 whether IGNITION 1 voltage is present at dual sensor.
Checks whether an improper connection is setting code.
Checks for an open diode by measuring for correct voltage drop.

Fig 1: Code 34 - Open in Ignition 1 Feed to Deployment Loop

Courtesy of GENERAL MOTORS CORP.