Opel Frontera UE. Manual - part 1667

8D–98

WIRING SYSTEM

Diagnosis

Both Stoplights Inoperative

Step

Action

Value(s)

Yes

No

1

Is the fuse C–6 normal?

—

Go to Step 2

Replace the

fuse

2

Dieconnect the stoplight switch connector I–18.

Is there continuity between switch side connector I–18
terminal 1 and 4 with the brake pedal depressed?

—

Go to Step 3

Repair or

replace the

switch

3

Is the battery voltage applied between harness side
connector I–18 terminal 1 and the ground?

Approx. 12V

Go to Step 5

Go to Step 4

4

Repair an open circuit between the fuse C–6 and
connector I–18 terminal 1.

Is the action complete?

—

Verify repair

—

5

Repair an open circuit between stoplight switch and the
stoplight.

Is the action complete?

—

Verify repair

—

Stoplight On The Left (or Right) Side Inoperative

Step

Action

Value(s)

Yes

No

1

1. Disconnect the stoplight connector B–9 or B–13.
2. Depress the brake pedal.

Is the battery voltage applied between stoplight
harness side connector terminal 2 and the ground?

Approx. 12V

Go to Step 2

Go to Step 3

2

Repair an open circuit between the stoplight and the
ground.

Is the action complete?

—

Verify repair

—

3

Repair an open circuit between the stoplight switch and
the stoplight.

Is the action complete?

—

Verify repair

—

SECTION

8D–99

WIRING SYSTEM

High Mounted Stoplight Inoperative

Step

Action

Value(s)

Yes

No

1

Depress the brake pedal.

Does the stoplight come on?

—

Go to Step 3

Go to Step 2

2

Refer to the diagnosis procedure for “Both Stoplights
inoperative” in this section.

Is the action complete?

—

Verify repair

—

3

Is B–8 grounded securely?

—

Go to Step 4

 Ground it

securely

4

1. Disconnect the high mounted stoplight connector.
2. Depress the brake pedal.

Is the battery voltage applied between harness side
connector G–11 terminal 1 and the ground?

Appprox. 12V

Go to Step 6

Go to Step 5

5

Repair an open circuit between connector H–19
terminal 10 and the high mounted stoplight.

Is the action complete?

—

Go to Step 4

—

6

Is there continuity between high mounted stoplight side
connector terminals?

—

Go to Step 7

Repair or

replace the

light

7

Repair an open circuit between the high mounted
stoplight and the ground B–8.

Is the action complete?

—

Verify repair

—

SECTION

8D–100

WIRING SYSTEM

Backup Light

General Description

The circuit consists of backup light switch (M/T), mode
switch (A/T) and backup light.
When shift lever is set to “R” position, backup light switch
(M/T) or mode switch (A/T) is activated to illuminate
backup light.

SECTION

8D–101

WIRING SYSTEM

Circuit Diagram

D08R100114

SECTION