GM Service Manual Online
For 1990-2009 cars only

Courtesy Lamps Inoperative Keyless Entry

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lights System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2

  1. Disconnect the body control module (MALL) connector C1.
  2. Connect a DMM from the MALL connector C1 cavity G (ORN) to ground.

Is the voltage within the specified range?

12-14V

Go to Step 3

Go to Step 10

3

  1. Disconnect the MALL connector C2.
  2. Turn the ignition switch to the RUN position.
  3. Connect a DMM from the MALL connector C2 terminal C13 (PNK) to ground.

Is the voltage within the specified range?

12-14V

Go to Step 4

Go to Step 11

4

Connect a DMM from the MALL connector C1 cavity G (ORN) to cavity D (BLK).

Is the voltage within the specified range?

12-14V

Go to Step 5

Go to Step 12

5

Inspect CKT 156 (WHT) for an open between S285 and the MALL. Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 6

Go to Step 7

6

Repair the open in CKT 156 (WHT). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

7

Inspect CKT 1732 (ORN) for an open between S254 and the MALL. Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 8

Go to Step 9

8

Repair the open in CKT 1732 (ORN). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

9

Replace the body control module (MALL). Refer to Body Control Module Replacement in Body Control System.

Is the MALL module replacement complete?

--

Go to Interior Lamps System Check

--

10

Repair the open or the short to ground in CKT 640 (ORN). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

11

Repair the open or short to ground in CKT 39 (PNK). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

12

Repair the open in CKT 1450 (BLK). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

Courtesy Lamps Inoperative Door Hndl Lftd w/o Keyless Ent

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lights System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2

  1. Disconnect the suspect front door handle switch connector.
  2. Connect a fused jumper from the suspect front door handle switch connector cavities A (LT GRN/BLK) to B (BLK/WHT or BLK).

Do all of the courtesy lamps turn on?

--

Go to Step 3

Go to Step 4

3

Replace the suspect front door handle switch.

Is the front door handle switch replacement complete?

--

Go to Interior Lamps System Check

--

4

Inspect CKT 394 (LT GRN/BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 5

Go to Step 6

5

Repair the open in CKT 394 (LT GRN/BLK). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

6

Inspect CKT 1250 (BLK/WHT or BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 7

Go to Step 8

7

Repair the open in CKT 1250 (BLK/WHT or BLK). Refer to Wiring Repairs in Wiring Systems

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

8

Replace the MALL. Refer to Body Control Module Replacement in Body Control System.

Is the MALL module replacement complete?

--

Go to Interior Lamps System Check

--