DTC 044

CIRCUIT DESCRIPTION

SIR Schematics: Power, Ground, Serial Data, Indicator and Front Inflatable Restraint Modules:

SIR Schematics: Seat Belt Pretensioners, Side Inflatable Restraint Modules, and Sensors:

When the ignition is turned ON, the Inflatable Restraint Sensing And Diagnostic Module (SDM) flashes the AIR BAG indicator seven times. The SDM performs diagnostic tests on the SIR system and then turns the AIR BAG indicator OFF if no SIR malfunctions exists. If the ignition 1 voltage is outside of the normal operating range (9 - 16 volts), the SDM will turn the AIR BAG indicator ON with no DTCs present. The SDM monitors the AIR BAG indicator control circuit by comparing the output state of the AIR BAG indicator control circuit to the microprocessor commanded state.

CONDITIONS FOR RUNNING THE DTC
Ignition 1 voltage is within the normal operating voltage range.

CONDITIONS FOR SETTING THE DTC
The output state of the AIR BAG indicator control circuit does not match the commanded state for 1.25 seconds.

ACTION TAKEN WHEN THE DTC SETS
The SDM attempts to turn the AIR BAG indicator ON.

CONDITIONS FOR CLEARING THE DTC
^ The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
^ A history DTC will clear once 255 malfunction free ignition cycles have occurred.

DIAGNOSTIC AIDS
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in misdiagnosis, causing a pan replacement with the reappearance of the malfunction.

The following are possible causes of the malfunction:
^ A short to ground, open or a high resistance in the AIR BAG indicator control circuit
^ The Instrument Panel Cluster (IPC) connector
^ An internal IPC malfunction
^ The SDM connector
^ An internal SDM malfunction

If an intermittent condition exists, refer to Testing for intermittent and Poor Connections in Diagrams.

TEST DESCRIPTION

Steps 1-8:

2. Tests to see if the IPC connector is damaged or corroded.
3. Tests to see if the IPC terminals are damaged or corroded.
4. Tests to see if the SDM connector is damaged or corroded.
5. Tests to see if the SDM terminals are damaged or corroded.
6. Tests to see if there is a short to ground, open or a high resistance in the AIR BAG indicator control circuit.