Opel Frontera UE. Manual - part 492

8D–108

WIRING SYSTEM

Parts Location (4Door Model)

D08RX203

Legend

(1) H–19
(2) Relay & Fuse Box
(3) I–18
(4) B–9
(5) Stoplight – RH
(6) H–21

(7) G–10, G–11
(8) High Mounted Stoplight
(9) Stoplight – LH

(10) B–13

(11) B–8

(12) B–6

8D–109

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 connector I–18 terminal 1
and 4 with the brake pedal depressed?

—

Go to Step 3

Replace 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?

Approc. 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

—

8D–110

WIRING SYSTEM

High Mounted Stoplight Inoperative

Step

Action

Value(s)

Yes

No

1

Depress the brake pedal.

Do 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–6 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 or connector G–4 terminal 2
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–6.

Is the action complete?

—

Verify repair

—

8D–111

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.