Opel Frontera UBS. Manual - part 147

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–40

Check flow

Trouble code

Phenomenon

Standard

6

13

The reference is short-circuited to

GND.

Reference 

]

 5 V

15

The reference Vb is short-circuited.

If the reference wire (15) is short-circuited to GND, the
speed signal is not generated. If the wire is short-circuited
to the battery voltage, the signal level becomes faulty.

D04RW061

4B2–41

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

1. Start the engine.

Does the voltage between terminals 15 and 19 meet the standard
5V?

Go to Step 8

Go to Step 2

2

Is the voltage below the standard?

Go to Step 3

Go to Step 7

3

1. Turn off the starter switch.
2. Disconnect the ECU connector.

Is the continuity established between vehicle harness terminals
(B–67)7 and (B–67)11?

Go to Step 4

The ECU is

failed. Replace

the ECU.

Go to Step 8

4

1. Disconnect the H-49 connector.

Is the continuity established between floor harness connector
terminals (H-49)3 and (H-49)9?

Go to Step 5

Go to Step 6

5

1. Disconnect the A–3 connector.

Is the continuity established between transfer harness connector
terminals (A–3)2 and (A–3)7?

Replace the front

speed sensor.

Go to Step 8

The reference

harness for the

front speed

sensor is

short–circuited to

GND. Repair the

circuit.

Go to Step 8

6

1. Disconnect the A–3 connector.

Is the continuity established between transfer harness connector
terminals (A–3)1 and (A–3)7?

Replace the rear

speed sensor.

Go to Step 8

The reference

harness for the

rear speed

sensor is

short–circuited to

GND. Repair the

circuit.

Go to Step 8

7

1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.

Is the battery voltage observed between harness connector
terminals (B–67)7 and (B–67)11?

Repair the

harness circuit.

Go to Step 8

The ECU has

failed. Replace

the ECU.

Go to Step 8

8

1. Check that all the parts are mounted.
2. Clear the trouble code.

Is this step complete?

Repeat the

“Diagnosis Flow”

Go to Step 8

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–42

Check flow

Trouble code

Phenomenon

Standard

7

21

The voltage of the throttle position

sensor (TPS) is faulty.

The signal voltage from the TPS deviates from the stan-
dard range.

D04RW056

4B2–43

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

1. Turn off the starter switch.

Is the battery voltage normal?

Go to Step 2

Charge or

replace the

battery.

Go to Step 6

2

1. Turn on the starter switch.

Does the voltage between terminals 21 and 19 fall within the
standard range above?

Go to Step 6

Go to Step 3

3

1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.

Does the voltage between terminals (B–68)9 and (B–67)11 fall
within the standard range above?

The ECU has

failed. Replace

the ECU.

Go to Step 6

Go to Step 4

4

Is the harness healthy?

Go to Step 5

Repair the

harness.

Go to Step 6

5

Is the TPS healthy?

Go to Step 6

Replace the TPS.

Go to Step 6

6

1. Check that all the parts are mounted.
2. Clear the trouble code.

Is this step complete?

Repeat the

“Diagnosis Flow”.

Go to Step 6