Diagnostic Aids

An intermittent condition is likely to be caused by a short between 347 and 348, 1403 or 1404, or a malfunctioning shorting bar on the driver inflator module or SIR coil assembly which would require replacement of the component. The test for this DTC is run only while the AIR BAG warning light is performing the bulb check, unless DTC 17 or 26 is detected. When a PDT "Clear Codes" command is issued and the malfunction is still present, the DTC will not reappear until the next ignition cycle.

1. DTC 16 and 22 will set simultaneously when the "Driver Side HI" circuit is shorted to the "Passenger Side HI" circuit due to parallel current paths.
2. Determines whether the malfunction is in the driver inflator module circuitry or in the SDM wiring harness circuitry.
3. Checks for a short from the "Driver Side HI" circuits to the "Driver Side LO" circuit.
4. Determines whether the malfunction is in the driver inflator module or the SIR coil assembly.
5. Checks for a short from the "Driver Side HI" circuit to the "Passenger Side LO" circuit.

Fig 1: DTC 22 - Driver Initiator Circuit Resistance Low (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC 22 - Driver Initiator Circuit Resistance Low (2 Of 2)

Courtesy of GENERAL MOTORS CORP.