Test Notes

DESCRIPTION:
Rapid Continuous Flashing of Air Bag Indicator (No DTC) All Primary Crash Sensors Disconnected

NORMAL OPERATION
Each primary crash sensor has three wires.

- The first wire is used for air bag deployment.

- The second wire is used to monitor the sensor's connection to the air bag diagnostic monitor. (Refer to DTC's B1941 and B1942, Normal Operation for details.)

- The third is used to monitor the mounting (ground) of the sensor to sheet metal. (Refer to DTC's B1944 and B1945, Normal Operation for details.)

An air bag diagnostic monitor which has yet to be powered up in an electrically complete system will remain in assembly plant mode until it is powered up in a good system for a period of time. While the air bag diagnostic monitor is in assembly plant mode:

- If both primary crash sensors are disconnected, the air bag diagnostic monitor will flash the AIR BAG indicator continuously at a rapid rate.

- If a fault exists in the system, the appropriate lamp fault code will flash on the warning indicator but no DTCs will be stored in the diagnostic monitor's nonvolatile memory. Subsequently, DTCs can be retrieved by running on-demand self test, but will not appear when retrieving continuous codes.

When the air bag diagnostic monitor is not in assembly plant mode:

- If both primary crash sensors are disconnected, the air bag diagnostic monitor will store DTCs B1941, B1942, B1944 and B1945.

- Any other applicable DTCs will also be stored in the air bag diagnostic monitor.

POSSIBLE CAUSES

Rapid continuous flashing of the AIR BAG indicator can be caused by:

- both primary crash sensors disconnected from wiring harness.

- main wiring harness not connected to engine compartment wiring harness.

DESCRIPTION:
Rapid Continuous Flashing of Air Bag Indicator-Both Primary Crash Sensors Disconnected

Refer to DTC's B1941, B1942, B1944 or B1945 for Diagnostic Trouble Codes service.