GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Audible Alarms System Check?

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Go to Step 2

Go to Audible Warnings System Check

2

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the seat belt/ ignition key/ lamps alarm connector.
  3. Ensure the drivers seat belt buckle is unfastened (released).
  4. Connect a test lamp.
  5. Probe between B+ and the seat belt/ ignition key/ lamps alarm harness connector terminal A2.

Does the test light illuminate?

--

Go to Step 6

Go to Step 3

3

  1. Disconnect the driver seat belt switch electrical connector.
  2. Connect a J 39200 digital multimeter (DMM).
  3. Measure the resistance between the driver seat belt switch harness connector terminal A and the ground.

Is the resistance less than the specified value?

2ohms

Go to Step 4

Go to Step 8

4

  1. Connect a J 39200 DMM.
  2. Measure the resistance between the seat belt/ ignition key/ lamps alarm harness connector terminal A2 and the driver seat belt switch harness connector terminal B.

Is the resistance less than the specified value?

2ohms

Go to Step 5

Go to Step 9

5

  1. Connect a J 39200 DMM.
  2. Measure the resistance between the driver seat belt switch connector terminals A and B (switch side).

Is the resistance less than the specified value?

2ohms

Go to Step 6

Go to Step 7

6

Has the repair been made?

--

Go to Step 10

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7

Has the repair been made?

--

Go to Step 10

--

8

  • Repair a poor connection or open in CKT 250.

Has the repair been made?

--

Go to Step 10

--

9

  • Repair a poor connection or open in CKT 238.

Has the repair been made?

--

Go to Step 10

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10

  1. Ensure the ignition is in the LOCK position.
  2. Reinstall the connectors/components that were removed.

Have all repairs been made?

--

Go to Audible Warnings System Check

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