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. Disconnect the right I junction block connector C3.
  2. Disconnect the left rear door jamb switch.
  3. Use a DMM in order to measure the voltage in CKT 395 between the right IP junction block connector C3 terminal B11 and ground.

Is the voltage measured equal to the specified value?

0 V

Go to Step 2

Go to Step 3

2

  1. Disconnect the right IP junction block connector C3.
  2. Disconnect the left rear door jamb switch.
  3. Use a DMM in order to measure the resistance in CKT 395 between the right IP junction block connector C3 terminal B11 and the left rear door jamb switch connector terminal B.

Is the resistance measured within the specified range?

0-2 ohms

Go to Step 4

Go to Step 7

3

Repair the short to positive battery voltage in CKT 395 between the right IP junction block connector C3 terminal B11 and the left rear door jamb switch connector terminal B. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--

4

Use a DMM in order to measure the resistance in CKT 650 between the left rear door jamb switch connector terminal A and ground.

Is the resistance measured within the specified range?

0-2 ohms

Go to Step 5

Go to Step 8

5

Use a DMM in order to measure the resistance between the left rear door jamb switch connector terminal A and terminal B.

Is the resistance measured equal to the specified value?

Go to Interior Lamps System Check

Go to Step 6

6

Replace the left rear door jamb switch.

Is the repair complete?

--

Go to Interior Lamps System Check

--

7

Repair the open in CKT 395 between the left rear door jamb switch connector terminal B and the right IP junction block connector C3 terminal B11. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--

8

Repair the open in CKT 650 between the left rear door jamb switch connector terminal A and ground splice pack G302. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--