Opel Frontera UE. Manual - part 1689

8D–186

WIRING SYSTEM

Diagnosis

Speedometer and Odometer Do Not Function

Step

Action

Value(s)

Yes

No

1

Is C–16 grounded securely?

—

Go to Step 2

Ground it

securely

2

Disconnect the vehicle speed sensor connector E–61.

Is there continuity between harness side connector
E–61 terminal 2 and the ground?

—

Go to Step 4

Go to Step 3

3

Repair an open circuit between connector E–61
terminal 2 and the ground C–16.

Is the action complete?

—

Go to Step 2

—

4

1. Disconnect the meter connector I–10.
2. Turn the starter switch on.

Is the battery voltage applied between harness side
connector E–61 terminal 1 and the ground?

Approx. 12V

Go to Step 6

Go to Step 5

5

Repair an open circuit between fuse C–11 and
connector E–61 terminal 1.

Is the action complete?

—

Go to Step 4

—

6

Disconnect the meter connector I–9.

Is there continuity between harness side connector I–9
terminal 7 and harness side connector E–61 terminal
3?

—

Go to Step 8

Go to Step 7

7

Repair an open circuit between connector I–9 terminal
7 and connector E–61 terminal 3.

Is the action complete?

—

Verify repair

—

8

1. Connector a resistance of 1.3 to 5K ohm (1.4W or

more) between harness side connector I–10
terminal 14 and harness side connector I–9 terminal
7.

2. Install a speedometer tester.
3. Check the waveform at the time when the vehicle

speed is 60 Km/h with a oscilloscope.

NOTE: Normal waveform appears between approx.
12V and 2V with cycles of 23.6 m sec..

Is the waveform normal?

—

Replace the

meter

assembly

Replace the

vehicle speed

sensor

Speedometer Does Not Function (Odometer is Normal)

Step

Action

Value(s)

Yes

No

1

Replace the meter assembly.

Is the action complete?

—

Verify repair

—

Odometer Does Not Function (Speedometer is Normal)

Step

Action

Value(s)

Yes

No

1

Replace the meter assembly.

Is the action complete?

—

Verify repair

—

SECTION

8D–187

WIRING SYSTEM

Speedometer Pointer Fluctuates (May be Wide Fluctuation)

Step

Action

Value(s)

Yes

No

1

NOTE: Refer to the step 8 of diagnosis procedure for
Speedometer and Odometer Does Not Function in this
section.

Is the vehicle speed sensor signal normal?

—

Replace the

meter

assembly

Go to step 2

2

Repair a poor connections of the connectors or a failure
in the circuit between connector I–9 terminal 7 and
connector E–61 terminal 3.

Is the action complete?

—

Verify repair

—

Speedometer Pointer Jumps Erratically

Step

Action

Value(s)

Yes

No

1

NOTE: Refer to the step 8 of diagnosis procedure for
Speedometer and Odometer Does Not Function in this
section.

Is the vehicle speed sensor signal normal?

—

Replace the

meter

assembly

Go to step 2

2

Repair a poor connections of the connectors or a failure
in the circuit between connector 1–9 terminal 7 and
connector E–61 terminal 3.

Is the action complete?

—

Verify repair

—

Tachometer Does Not Function

Step

Action

Value(s)

Yes

No

1

1. Disconnect the meter connector I–9.
2. Check the waveform of terminal 6 when the engine

revolution is 3000 rpm with a oscilloscope.

NOTE: Normal waveform appears between 4.3V and
0.4V with cycles of 6.7 m sec..

Is the waveform normal?

—

Replace the

meter

assembly

Go to step 2

2

Is the circuit between connector I–9 terminal 6 and the
PCM connector E–21 terminal 7(F7) normal?

—

Replace the

PCM

Repair the

circuit

Tachometer Pointer Fluctuates (May Be Wide Fluctuation)

Step

Action

Value(s)

Yes

No

1

NOTE: Refer to the step 1 of diagnosis procedure for
Tachometer Does Not Function in this section.

Is the waveform normal?

—

Replace the

meter

assembly

Go to step 2

2

Is the circuit between connector I–9 terminal 6 and the
PCM connector E–21 terminal 7(F7) normal?

—

Replace the

PCM

Repair the

circuit

SECTION

8D–188

WIRING SYSTEM

Tachometer Pointer Jumps Erratically

Step

Action

Value(s)

Yes

No

1

NOTE: Refer to the step 1 of diagnosis procedure for
Tachometer Does Not Function in this section.

Is the waveform normal?

—

Replace the

meter

assembly

Go to step 2

2

Is the circuit between connector I–9 terminal 6 and the
PCM connector E–21 terminal 7(F7) normal?

—

Replace the

PCM

Repair the

circuit

Engine Coolant Temperature (ECT) Gauge Pointer Does Not Move

Step

Action

Value(s)

Yes

No

1

Repair or replace the PCM, the ECT sensor, or the
circuits between the PCM and the ECT sensor, if
necessary.

NOTE: Refer to PCM Diagnostic Trouble Codes in
Driveability and Emission section.

Is the action complete?

—

Go to step 2

—

2

Does the ECT gauge work normally?

—

—

Go to step 3

3

Disconnect the meter and the PCM connector.

Is there continuity between harness side connector
I–10 terminal 30 and connector E–22 terminal 47
(S47)?

—

Replace the

meter

assembly

Repair an

open circuit

Engine Coolant Temperature (ECT) Gauge Reading is Too Low

Step

Action

Value(s)

Yes

No

1

Repair or replace the PCM, the ECT sensor, or the
circuits between the PCM and the ECT sensor, if
necessary.

NOTE: Refer to PCM Diagnostic Trouble Codes in
Driveability and Emission section.

Is the action complete?

—

Go to Step 2

—

2

Does the ECT gauge work normally?

—

—

Go to Step 3

3

Replace the meter assembly.

Is the action complete?

—

Verify repair

—

Engine Coolant Temperature (ECT) Gauge Pointer Overshoots (or Goes Up To the “H”
Range)

Step

Action

Value(s)

Yes

No

1

Repair or replace the PCM, the ECT sensor, or the
circuits between the PCM and the ECT sensor, if
necessary.

NOTE: Refer to PCM Diagnostic Trouble Codes in
Driveability and Emission section.

Is the action complete?

—

Go to Step 2

—

2

Does the ECT gauge work normally?

—

—

Go to Step 3

3

Is there a short circuit between connector I–10 terminal
30 and connector E–22 terminal 47 (S47)?

—

Repair a

short circuit

Replace the

meter

assembly

SECTION

8D–189

WIRING SYSTEM

Fuel Gauge Needle Does Not Move

Step

Action

Value(s)

Yes

No

1

Is C–16 grounded securely?

—

Go to step 2

Ground it

securely

2

Disconnect the fuel tank unit connector F–1.

Is there continuity between the harness side connector
F–1 terminal 2 and the ground?

—

Go to step 4

Go to step 3

3

Repair an open circuit between connector F–1 terminal
2 and the ground C–16.

Is the action complete?

—

Verify repair

—

4

1. Connect a 3.4W bulb between the harness side

connector F–1 terminal 3 and the ground.

2. Turn the starter switch on.

Does the fuel gauge needle fluctuate after about 90
seconds?

—

Replace the

fuel tank unit

Go to step 5

5

Disconnect the meter connector I–2.

Is there continuity between the harness side connector
I–2 terminal 3 and connector F–1 terminal 3?

—

Replace the

meter

assembly

Go to step 6

6

Repair an open circuit between the meter assembly
and the fuel tank unit.

Is the action complete?

—

Verify repair

—

Even the Tank is Filled Up With Fuel, The Needle Does Not Reach “F”

Step

Action

Value(s)

Yes

No

1

Disconnect and connect the fuel tank unit connector
F–1 several times.

Does the indication of the fuel gauge vary?

—

Go to step 2

Go to step 3

2

Repair a poor connection of the fuel tank unit connector
F–1.

Is the action complete?

—

Verify repair

—

3

1. Disconnect the fuel tank unit connector F–1.
2. Connect the harness side connector F–1 terminal 2

and 3 with a lead wire.

3. Turn the starter switch on.

Does the fuel gauge needle overshoot to “F” after about
5 minutes?

—

Repair or

replace the

fuel tank unit

Replace the

meter

assembly

Even When The Tank Is Not Filled With Fuel, The Needle Overshoots To “F”

Step

Action

Value(s)

Yes

No

1

1. Disconnect the fuel tank unit connector F–1.
2. Turn the starter switch on.

Does the needle point to “E”?

—

Replace the

fuel tank unit

Go to step 2

2

Is there a short circuit between the meter connector I–2
terminal 3 and the fuel tank unit connector F–1 terminal
3?

—

Repair a

short circuit

Replace the

meter

assembly

SECTION