For 1990-2009 cars
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Handling ESD Sensitive Parts Notice

### 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.

1. DTC B1061 will be set when the inflatable restraint Sensing and Diagnostic Module (SDM) is configured for a serial data controlled warning indicator (smart cluster).

#### DTC B1061 SIR Indicator Circuit Failure

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the SIR Diagnostic System Check performed? | -- | Go to Step 2 | Go to SIR Diagnostic System Check
2 |

1. This diagnostic trouble code is set when malfunctions occur in the AIR BAG warning lamp circuitry. These malfunctions are addressed in the SIR Diagnostic System Check using AIR BAG Warning Lamp Comes On Steady and AIR BAG Warning Lamp Does Not Come On . Failure to properly perform the SIR Diagnostic System Check may result in misdiagnosis.
2. Turn the ignition switch to the ON position.
3. Clear the SIR diagnostic trouble codes.
4. Request the SIR diagnostic trouble code display.

Is DTC B1061 set?

--

Go to Step 3

Go to SIR Diagnostic System Check

3 | Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . Is the repair complete? | -- | Go to SIR Diagnostic System Check | --