About These Tests

Each diagnostic trouble code is diagnosed by following a specific testing procedure. These diagnostic test procedures contain step-by-step instructions for determining the cause of trouble codes. It is not necessary to perform all of the tests to diagnose an individual code.

Always begin by reading the diagnostic trouble codes using the DRB or equivalent scan tool. This procedure begins with TEST 1A - Testing System Function. This will direct you to the specific test(s) that must be performed. If more than one code exists, diagnostic priority should be given to the active code(s).


The air bag system diagnostic module may report any of the following diagnostic trouble codes.

For these codes, replace the air bag system diagnostic module (ASDM):

- Internal Diagnostic Module #1
- Internal Diagnostic Module #2
- Internal Diagnostic Module #3
- Low Stored Energy
- Safing Sensor Open
- Safing Sensor Short

If these codes are active codes, follow the required test sequence starting with TEST 1A - Testing System Function:

- Front Sensor Short
- Ignition 1 (Run/Start) Low
- Ignition 2 (Run Only) Low
- Initiator (Squib) Open
- Initiator (Squib) Short
- One Front Sensor Open
- Two Front Sensors Open
- Warning Lamp Short/Open

If the codes listed above are stored codes and not active codes, check for the following:
- Loose Or Corroded Connections
- Damaged Components
- Damaged Wiring