GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Sonoma Pickup - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Headlamps Inoperative - Right High Beam

Headlamps Inoperative - Right High Beam Standard

Step

Action

Value(s)

Yes

No

1

Did you perform the DRL System Check?

--

Go to Step 2

Go to Daytime Running Lights (DRL) System Check

2

Use the scan tool in order to read the current body control module (BCM) diagnostic trouble codes (DTCs).

Does the scan tool show any DTCs?

--

Go to Diagnostic Trouble Code (DTC) List/Type in Body Control System

Go to Step 3

3
  1. Disconnect the headlamp, RH high beam connector.
  2. Move the headlamp switch to the HEAD position.
  3. Move the multifunction switch to the HIGH BEAM position.
  4. Connect a test lamp from headlamp, RH high beam connector terminal A to ground.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 4

4

Locate and repair an open in CKT 198 (DK BLU) between the headlamp, RH high beam bulb and the underhood fuse block.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

5

Connect a test lamp from headlamp, RH high beam connector terminal A to terminal B.

Does the test lamp illuminate?

--

Go to Step 7

Go to Step 6

6

Locate and repair an open in CKT 524 (PPL) between the headlamp, RH high beam connector and the underhood fuse block.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

7

Replace the headlamp, RH high beam bulb.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

Headlamps Inoperative - Right High Beam Envoy

Step

Action

Value(s)

Yes

No

1

Did you perform the DRL System Check?

--

Go to Step 2

Go to Daytime Running Lights (DRL) System Check

2

Do the low beams (HID) operate?

--

Go to Step 3

Go to Daytime Running Lamps (DRL) Headlamps Inoperative

3
  1. Move the headlamp switch to the HEAD position.
  2. Move the multifunction switch lever to the HIGH BEAMS position.
  3. Connect a test lamp between ground and each test point on the back of the RT HI fuse in the underhood fuse block.

Does the test lamp illuminate at both test points?

--

Go to Step 6

Go to Step 4

4

Does the test lamp illuminate at any test point?

--

Go to Step 5

Go to Step 9

5

Locate and repair a short to ground in CKT 311 (LT GRN/BLK).

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

6
  1. Remove the daytime running lamps (DRL) relay.
  2. Connect a fused jumper between cavity 3 and cavity 4 of the DRL relay center.
  3. Move the headlamp switch to the HEAD position.
  4. Move the multifunction switch lever to the HIGH BEAMS position.

Does the right high beam light?

--

Go to Step 7

Go to Step 8

7

Replace the DRL relay.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

8
  1. Connect a fused jumper between CKT 1193 (LT GRN), cavity 3 at the DRL relay socket and ground.
  2. Move the headlamp switch to the HEAD position.
  3. Move the multifunction switch lever to the HIGH BEAMS position.

Does the right high beam illuminate?

--

Go to Step 9

Go to Step 10

9

Replace the underhood fuse block.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

10
  1. Disconnect the right high beam bulb.
  2. Inspect the bulb.

Is the right high beam bulb open?

--

Go to Step 11

Go to Step 12

11

Replace the right high beam bulb.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

12
  1. Connect a test lamp between CKT 311 (LT GRN/BLK), cavity A at the right high beam connector and ground.
  2. Move the headlamp switch to the HEAD position.
  3. Move the multifunction switch lever to the HIGH BEAMS position.

Does the test lamp illuminate?

--

Go to Step 14

Go to Step 13

13

Locate and repair an open in CKT 311 (LT GRN/BLK).

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

14

Locate and repair an open in CKT 1193 (LT GRN).

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--