GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.

1

  1. Remove the scan tool from the data link connector (DLC).
  2. Disconnect the sensing and diagnostic module (SDM) connector.
  3. Test for an open or short to ground in the the power circuit(s) to the SDM.

Was a condition found and corrected?

--

Go to Data Link Communications System Check

Go to Step 2

2

Test for an open in the ground circuit(s) to the SDM.

Was a condition found and corrected?

--

Go to Data Link Communications System Check

Go to Step 3

3

Test for an open, short to ground or short to battery between terminal 9 of the data link connector and terminal 5 of the SDM with a DMM.

Was a condition found and corrected?

--

Go to Data Link Communications System Check

Go to Step 4

4

Replace the SDM. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.

Is the repair complete?

--

Go to Data Link Communications System Check

--