Circuit Description
In the ON position, the ignition switch applies battery voltage to the AIR BAG warning indicator and to the ignition voltage input terminal A1. The inflatable restraint Sensing and Diagnostic Module (SDM) responds by flashing the AIR BAG warning indicator seven times. The SDM monitors the indicator driver output by comparing the output state at the AIR BAG indicator terminal A9 to the microprocessor commanded state.
Conditions for Setting the DTC
The output state at the AIR BAG indicator terminal A9 does not match the commanded state of the lamp driver for 500 milliseconds.
The continuous diagnostics test checks for this DTC. This test occurs when ignition voltage is within the normal operating range.
Action Taken When the DTC Sets
| • | The SDM sets a diagnostic trouble code. |
| • | The SDM attempts to turn on the AIR BAG warning indicator. |
Conditions for Clearing the DTC
| • | Current DTC |
| The output state at the AIR BAG indicator terminal A9 matches the commanded state of the lamp driver for 500 milliseconds. |
| • | History DTC |
| - | Issue a scan tool CLEAR CODES command. |
| - | 250 ignition cycles have occurred without a malfunction. |
Diagnostic Aids
Refer to AIR BAG Warning Lamp Comes On Steady and AIR BAG Warning Lamp Does Not Come On in order to diagnose warning indicator circuit malfunctions.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the SIR Diagnostic System Check performed? | -- | ||
Is DTC B1061 set? | -- | |||
3 | Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . Is the repair complete? | -- | -- |
