B1061

CIRCUIT DESCRIPTION

In the RUN 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 SIR INDICATOR terminal 7 to the microprocessor commanded state.

CONDITIONS FOR SETTING THE DTC

The output state at the SIR 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 DTC

^ Current DTC.
- The output state at the SIR INDICATOR terminal 7 matches the commanded state of the lamp driver for 400 milliseconds.
^ History DTC.
- You issue a scan tool CLEAR CODES command.
- 250 malfunction free ignition cycles have occurred.

DIAGNOSTIC AIDS

Refer to TABLES B Table B Air Bag Warning Lamp Comes On Steady
and C Table C Air Bag Warning Lamp Does Not Come On
to diagnose warning lamp circuit malfunctions.

DTC TABLE TEST DESCRIPTION:

Numbers below refer to step numbers on the diagnostic table.
2. When the inflatable restraint Sensing and Diagnostic Module (SDM) is configured for a serial data controlled warning lamp (smart cluster), DTC B1061 will set.