GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: Door ajar message is inoperative from one or more doors.

1

Did you review the operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

2

Turn ON the ignition, with the engine OFF.

During bulb check did the IP display the battery indicator?

--

Go to Step 3

Go to Step 4

3

Is the door ajar message inoperative from one door only?

--

Go to Step 5

Go to Step 6

4

Important: Perform the set up procedure for the IP.

Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console.

Did you complete the replacement and the set up procedure?

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Go to Step 10

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5

Test the signal circuit of the suspect door ajar switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 10

Go to Step 7

6

Repair the poor connection or open in the signal circuit of the door ajar switch. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 10

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7

Test the ground circuit of the suspect door ajar switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 10

Go to Step 8

8

Inspect for poor connections at the harness connector of the suspect door ajar indicator switch/door jamb switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 10

Go to Step 9

9

Replace the suspect door lock ajar indicator switch or door jamb switch. Refer to Front Side Door Lock Replacement .

Did you complete the replacement?

--

Go to Step 10

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10

  1. Turn ON the ignition, with the engine OFF.
  2. Open each of the vehicle doors one at a time. (Only one door is open at a time.)
  3. Observe the instrument cluster.

Does the IP display the door ajar message for each door?

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System OK

Go to Step 2