GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Riviera 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Park Lamps Inoperative

Park Lamps Inoperative Buick

Step

Action

Value(s)

Yes

No

1

Did you perform the 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 between the lamp control module connector C2 cavity C (ORN/BLK) and ground.

the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 6

3
  1. Disconnect the lamp control module connector C1.
  2. Turn the headlamp switch to 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 the voltage within the specified range?

10-15 V

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.

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Repair the open or the 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

Test 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

Test 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 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 between the lamp control module connector C2 cavity H (ORN/BLK) and ground.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 6

3
  1. Disconnect the lamp control module connector C1.
  2. Turn the headlamp switch to 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 the voltage within the specified range?

10-15 V

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.

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Repair the open or the 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

Test 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

Test 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 Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column - Tilt.

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

--