When you first turn ON the ignition switch, battery voltage is applied to the AIR BAG warning lamp and to the ignition 1 input terminal A9 and terminal A10. The inflatable restraint Diagnostic Energy Reserve Module (DERM) responds by flashing the AIR BAG warning lamp seven times. The flashing alternates between the primary lamp driver and the redundant lamp driver. The DERM monitors the primary lamp driver output by comparing the output state at the SIR Indicator terminal B1 to the microprocessor commanded state. When the ignition 1 is above a specified value and the output state does not match the commanded state of the primary lamp driver to 400 milliseconds, DTC B1061 is set.

The Ignition 1 voltage is above a specified value. The output state at the SIR indicator terminal B1 does not match the commanded state of the primary lamp driver for 400 milliseconds during Continuous Monitoring tests.

The DERM attempts to turn on the AIR BAG warning lamp using the redundant lamp driver and sets a diagnostic trouble code.

The ignition switch is turned OFF.

For diagnosis of the warning lamp circuit malfunctions, refer to AIR BAG Warning Lamp Comes On Steady and AIR BAG Warning Lamp Does Not Come On .

Refer to step numbers on the diagnostic table.

1. Start with the SIR Diagnostic System check for all diagnosis.

2. When the DERM is configured for a serial data controlled warning lamp (smart cluster) DTC B1061 will set. Clearing SIR diagnostic trouble codes will reset the DERM allowing the lamp driver in the DERM to control the AIR BAG warning lamp.

When measurements are requested in this table, use J 39200 Digital Multimeter with correct terminal adapter from J 35616 Connector Test Adapter Kit. When a check for proper connection is requested, refer to Intermittents and Poor Connections in Section 8A4. When a wire, connector or terminal repair is requested, use J-38125 Terminal Repair Kit and refer to Wiring Repair.