Circuit Description
In the RUN position, the ignition switch applies battery voltage to the AIR BAG warning lamp and to the IGNITION 1 input terminal 10. The inflatable restraint sensing and diagnostic module (SDM) responds by flashing the AIR BAG warning lamp 7 times. The SDM monitors the lamp driver output by comparing the output state at the Air Bag Indicator Control terminal 7 to the microprocessor commanded state.
Conditions for Setting the DTC
The output state at the Air Bag Indicator Control terminal 7 does not match the commanded state of the lamp driver for 400 milliseconds.
The Continuous Monitoring test inspects for this DTC. This test occurs when IGNITION 1 is within the normal operating voltage range.
Action Taken When the DTC Sets
| • | The SDM sets a diagnostic trouble code. |
| • | The SDM attempts to turn ON the AIR BAG warning lamp. |
Conditions for Clearing the DTC
| • | Current DTC--The output state at the Air Bag Indicator Control terminal 7 matches the commanded state of the lamp driver for 400 milliseconds. |
| • | History DTC |
| - | You issue a scan tool CLEAR CODES command |
| - | After 250 malfunction free ignition cycles have occurred |
Diagnostic Aids
Refer to AIR BAG Warning Lamp Comes On Steady and AIR BAG Warning Lamp Does Not Come On to diagnose warning lamp circuit malfunctions.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the SIR Diagnostic System Check performed? | -- | Go to Step 2 | |
2 |
Is DTC B1061 set? | -- |
