Air Bag Light B1061

Document ID# 220220
1998 Chevrolet/Geo Corvette
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DTC B1061 Lamp Circuit Failure
Circuit Description
In the ON 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 seven times. The SDM monitors the lamp driver output by comparing the output state at the INFLATABLE RESTRAINT INDICATOR terminal 7 to the microprocessor commanded state.
Conditions for Setting the DTC
The output state at the INFLATABLE RESTRAINT INDICATOR terminal 7 does not match the commanded state of the lamp driver for 400 milliseconds.
The CONTINUOUS MONITORING test checks 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 MIL/DTC
Current DTC The output state at the INFLATABLE RESTRAINT INDICATOR terminal 7 matches the commanded state of the lamp driver for 400 milliseconds.
History DTC
You issue a scan tool CLEAR CODES command.
Once 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.
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Document ID# 220181
1998 Chevrolet/Geo Corvette
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AIR BAG Warning Lamp Comes On Steady
Circuit Description
The ignition switch supplies Ignition 1 voltage to the inflatable restraint Sensing and Diagnostic Module (SDM) at terminal 10 using the SDM Fuse. The ignition switch also supplies Ignition 1 voltage to the AIR BAG warning lamp using the IPC Fuse. The AIR BAG warning lamp is connected to the INFLATABLE RESTRAINT INDICATOR at terminal 7 of the SDM. When the ignition switch is first turned to ON, the SDM responds by flashing the AIR BAG warning lamp seven times. If IGNITION 1 is outside of the normal operating voltage range (8.2 volts-17.1 volts), the AIR BAG warning lamp will come ON solid with no DTCs set.
Diagnostic Aids
In order to disable the shorting bar from terminal 6 to terminal 7 inside the inflatable restraint Sensing and Diagnostic Module (SDM) harness connector, the following two conditions must be met:
The SDM harness connector must be properly connected to the SDM.
The Connector Position Assurance (CPA) must be properly installed in the SDM harness connector.
When measurements are requested in this table, use J 39200 Digital Multimeter with the correct terminal adapter from J 35616-A Connector Test Adapter Kit. When a check for proper connection is requested, refer to General Electrical Diagnosis Procedures in Wiring Systems. When a wire, connector or terminal repair is requested, use J 38125-B Terminal Repair Kit and refer to Wiring Repair .






