Circuit Description
In the RUN position, the ignition switch applies battery voltage to the AIR BAG warning lamp and to the IGNITION 1 input at the inflatable restraint sensing and diagnostic module (SDM). The SDM responds by flashing the AIR BAG warning lamp seven times. The SDM monitors the lamp driver output by comparing the output state at the INFLATABLE RESTRAINT INDICATOR input 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 at the INFLATABLE RESTRAINT INDICATOR does not match the commanded state of the lamp driver for 400 milliseconds.
Action Taken When the DTC Sets
| • | The SDM sets a DTC B1061. |
| • | The SDM attempts to turn ON the AIR BAG warning lamp. |
Conditions for Clearing the DTC
| • | The output state at the INFLATABLE RESTRAINT INDICATOR matches the commanded state of the lamp driver for 400 milliseconds. |
| • | You can issue a CLEAR CODES command. |
| • | A history DTC will clear once 255 malfunction free ignition cycles have occurred. |
Diagnostic Aids
Refer to AIR BAG Warning Lamp Comes On Steady or AIR BAG Warning Lamp Does Not Come On to diagnose warning lamp circuit malfunctions.
When measurements are requested in this table, use the J 39200 DMM with the correct terminal adapter from the J 35616 Connector Test Adapter Kit. When an inspection for proper connection is requested, refer to Testing for Electrical Intermittents in Wiring Systems. When a wire, connector or terminal repair is requested, use the J-38125 Terminal Repair Kit and refer to Wiring Repairs in Wiring Systems.
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the SIR Diagnostic System Check? | -- | ||||||
2 |
Is DTC B1061 set? | -- | Go to Inflatable Restraint Sensing and Diagnostic Module Replacement |
