Test Notes

NORMAL OPERATION

Each Primary Crash Sensor Has Three Wires.

1. The first wire is used for air bag deployment.

2. The second wire is used to monitor the sensor's connection to the air bag diagnostic monitor. There are more details in Pinpoint Test B1941 and B1942, Normal Operation.

3. The third is used to monitor the mounting (ground) of the sensor to sheet metal. There are more details in Pinpoint Test B1944 and B1945, Normal Operation.

The Air Bag Monitor In Assembly Plant Mode/Not Yet Powered Up
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:

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

2. 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.

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

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

5. 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:

1. Both primary crash sensors disconnected from wiring harness.

2. Main wiring harness not connected to engine compartment wiring harness.

NOTE: Pinpoint Testing for a rapid continuous flashing indicator can be found at Tests B1941, B1942 - B1944, B1945. These codes will be found if the RH or LH primary crash sensor has an open/no power feed circuit or open/high resistance ground circuit.