GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1999 🢒 Aurora 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Park Lamps Inoperative

Park Lamps Inoperative Buick

Step

Action

Value(s)

Yes

No

1

Did you perform the entire Exterior Lights System Check?

--

Go to Step 2

Go to Exterior Lights System Check

2
  1. Turn the head lamp switch to the OFF position.
  2. Disconnect the lamp control module connector C2.
  3. Measure the voltage to ground at the lamp control module connector C2 cavity C (ORN/BLK).

Is battery voltage measured?

--

Go to Step 3

Go to Step 6

3
  1. Disconnect the lamp control module connector C1.
  2. Place the headlamp switch in the PARK position.
  3. Measure the voltage between the lamp control module connector C2 cavity C (ORN/BLK) and connector C1 cavity B11 (GRY/BLK).

Is battery voltage measured?

--

Go to Step 4

Go to Step 7

4

Connect a fused jumper between the lamp control module connector C2 cavity C (ORN/BLK) and cavity F (BRN).

Do the park lamps turn on?

--

Go to Step 5

Go to Step 8

5

Replace the lamp control module (LCM).

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Repair the open or short to ground in CKT 240 (ORN/BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

7

Inspect CKT 308 (GRY/BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 308 OK?

--

Go to Step 9

Go to Step 11

8

Repair the open in CKT 9 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

9

Inspect CKT 150 (BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 150 OK?

--

Go to Step 10

Go to Step 11

10

Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Is the repair complete?

--

Go to Exterior Lights System Check

--

11

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

Park Lamps Inoperative Oldsmobile

Step

Action

Value(s)

Yes

No

1

Did you perform the entire Exterior Lights System Check?

--

Go to Step 2

Go to Exterior Lights System Check

2
  1. Turn the head lamp switch to the OFF position.
  2. Disconnect the lamp control module connector C2.
  3. Measure the voltage to ground at the lamp control module connector C2 cavity H (ORN/BLK).

Is battery voltage measured?

--

Go to Step 3

Go to Step 6

3
  1. Disconnect the lamp control module connector C1.
  2. Place the headlamp switch in the PARK position.
  3. Measure the voltage between the lamp control module connector C2 cavity H (ORN/BLK) and connector C1 cavity B3 (GRY/BLK).

Is battery voltage measured?

--

Go to Step 4

Go to Step 7

4

Connect a fused jumper between the lamp control module connector C2 cavity H (ORN/BLK) and cavity F (BRN).

Do the park lamps turn on?

--

Go to Step 5

Go to Step 8

5

Replace the lamp control module (LCM).

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Repair the open or short to ground in CKT 240 (ORN/BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

7

Inspect CKT 308 (GRY/BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 308 OK?

--

Go to Step 9

Go to Step 11

8

Repair the open in CKT 9 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

9

Inspect CKT 351 (BLK/WHT) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 351 OK?

--

Go to Step 10

Go to Step 11

10

Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Is the repair complete?

--

Go to Exterior Lights System Check

--

11

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--