GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: The dome lamp does not operate when the left front door opens, but there is no problem with the reading lamp feature of the dome lamp. The dome lamp can be turned on with the interior lights dimming control. The dome lamp also operates when activated by the right, side, and rear door jamb switches.

1

Review the dome lamp operation and perform the necessary inspections.

Did you complete the system review and inspection?

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Go to Step 2

Go to Symptoms

2

Attempt to operate the dome lamps by opening the left front door.

Does the system operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the connector of the left front door jamb switch.
  2. Test continuity between ground and cavity D at the left door jamb switch connector.

Did the test indicate continuity?

--

Go to Step 5

Go to Step 4

4

Repair the open circuit CKT 150 (BLK) between the left door jamb switch and ground.

Did you complete the repair?

--

Go to Step 8

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5

While activating the left front door jamb switch, test the continuity of the switch between cavities A and D.

Did the test indicate continuity?

--

Go to Step 7

Go to Step 6

6

Replace the left front door jamb switch.

Did you complete the repair?

--

Go to Step 8

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7

Repair the open circuit CKT 328 (PPL) between the left front door jamb switch and splice S240.

Did you complete the repair?

--

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3