GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1999 🢒 Isuzu MD Steel Tilt (F Model) 🢒 Body and Accessories 🢒 Lighting Systems 🢒 License and Tail Lamps Inoperative

License and Tail Lamps Inoperative Right

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the harness connector from the right tail stop/turn lamp assembly.
  2. Set the headlamp switch to the PARK position.
  3. Connect a test lamp between terminal B on the right tail stop/turn lamp harness connector and ground.

Does the test lamp light?

Go to Step 2

Go to Step 3

2

Connect a test lamp between terminals B and E on the right tail stop/turn lamp harness connector.

Does the test lamp light?

Go to Step 4

Go to Step 5

3

Repair the open CKT 9 (BRN) between S901 and terminal B in the right tail stop/turn lamp harness connector.

Is the repair complete?

System OK

--

4

Repair the open in the right park/turn lamp assembly.

Is the repair complete?

System OK

--

5

Repair the open in CKT 150 (BLK) between S400 and terminal E in the right tail stop/turn lamp harness connector.

Is the repair complete?

System OK

License and Tail Lamps Inoperative Left

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the harness connector from the Left Rear Stop and Turn Lamp assembly.
  2. Set the Headlamp Switch to the PARK position.
  3. Connect a test lamp between terminal B on the Left Rear Stop and Turn Lamp harness connector and the chassis ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2

Connect a test lamp between terminals B and terminal E on the Left Rear Stop and Turn Lamp harness connector.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 9 (BRN) between S 901 and terminal B in the Left Rear Stop and turn Lamp Harness Connector.

Is the repair complete?

--

System OK

--

4

Repair the open in the Left Rear Park and Turn Lamp assembly.

Is the repair complete?

--

System OK

--

5

Repair the open in CKT 150 (BLK) between S 400 and terminal E in the Left Rear Stop and Turn Lamp Harness Connector.

Is the repair complete?

--

System OK

--

License and Tail Lamps Inoperative Both

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the harness connector C 402.
  2. Set the Headlamp Switch to the PARK position.
  3. Connect a test lamp between terminal A in the C 402 Front Chassis Harness Connector and the chassis ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2
  1. Connect the harness connector C 402.
  2. Disconnect the harness connector from the Right Rear Stop and Turn Lamp assembly.
  3. Connect a test lamp from terminal B CKT 9 (BRN) at the right stop, turn and tail lamp assembly to ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 9 (BRN) between S 126 and terminal A in C 402, the Front Chassis Harness Connector.

Is the repair complete?

--

System OK

--

4

Repair the open in CKT 150 (BLK) between S 400 and G 404.

Is the repair complete?

--

System OK

--

5

Repair the open in CKT 9 (BRN) between S 901 and terminal A in C 402, the Rear Chassis Harness Connector.

Is the repair complete?

--

System OK

--