Opel Frontera UE. Manual - part 1338

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–92

Step

Action

Yes

No

1

1. The car stops, the AT selector is the N position, and the brake

is applied.

When the TOD switch is changed to the TOD (or 2H) position, is
12V observed between terminals 44 and 47 (4L switch)?

Go to 

Step 2

Go to 

Step 3

2

1. The car stops, the AT selector is the N position, and the brake

is applied.

When the TOD switch is changed to the 4L position, is 0V
observed between terminals 44 and 47 (4L switch)?

Refer to 

“Trouble

intermittently

observed”.

Go to 

Step 3

3

1. The car stops, the AT selector is the N position, and the brake

is applied.

2. Select the TOD switch to the TOD (or 2H) position.

Is there the continuity between the connector (C–60) terminal 22
and 25?

Go to 

Step 5

Go to 

Step 4

4

1. Connect the ECU connector (C–60) and turn on the starter

switch.

2. The car stops, the AT selector is the N position, and the brake

is applied.

3. Select the TOD switch to the 4L position.
4. Turn off the starter switch and disconnect the ECU connector

(C–60).

Is there the continuity between the connector (C–60) terminal 22
and 25?

The ECU has

failed. Replace

the ECU.

Go to 

Step 9

Go to 

Step 5

5

1. Connect the ECU connector (C–60) and turn on the starter

switch.

2. The car stops, the AT selector is the N position, and the brake

is applied.

3. Select the TOD switch to the TOD (or 2H) position.
4. Turn off the starter switch and disconnect the connector

(H–38).

Is there the continuity between the connector terminal (H–38) 5
and (C–60) 25?

Go to 

Step 7

Go to 

Step 6

6

1. Connect the connector (H–38) and turn on the starter switch.
2. The car stops, the AT selector is the N position, and the brake

is applied.

3. Select the TOD switch to the 4L position.
4. After the transfer has changed to the 4L mode, turn off the

starter switch and disconnect the connector (H–38).

Is there the continuity between the connector terminal (H–38) 5
and (C–60) 25?

Go to 

Step 7

GND is

short-circuited

between

terminals (C–60)

2 and (H–38) 5.

Repair the circuit.

Go to 

Step 9

7

1. Connect the connector (H–38) and turn on the starter switch.
2. The car stops, the AT selector is the N position, and the brake

is applied.

3. Select the TOD switch to the TOD (or 2H) position.
4. After the transfer has changed to the TOD (or 2H) mode, turn

off the starter switch and disconnect the connector (A–1).

Is there the continuity between the connector terminal (A–1) 12
and GND?

Repair the

transfer.

Go to 

Step 9

Go to 

Step 8

SECTION

4B2–93

DRIVE LINE CONTROL SYSTEM (TOD)

Step

No

Yes

Action

8

1. Connect the connector (A–1) and turn on the starter switch.
2. The car stops, the AT selector is the N position, and the brake

is applied.

3. Select the TOD switch to the 4L position.
4. After the transfer has changed to the 4L mode, disconnect the

connector (A–1).

Is there the continuity between the connector terminal (A–1) 12
and GND?

GND is

short-circuited

between

terminals (A–1)

12 and (H–38) 5.

Repair the circuit.

Go to 

Step 9

Repair the

transfer.

Go to 

Step 9

9

Check that all the parts are mounted.

Is this step complete?

Verify the repair.

Go to 

Step 9

SECTION

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–94

Chart E–1

AXLE switch circuit wires are broken.

Function of circuit

—

Fail condition

Both the TOD and 4L modes are disabled. (The transition status is not removed.)

Indicator lamp state

TOD switch position

TOD

4L

D04R100013

SECTION

4B2–95

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

Start the engine.

When the TOD switch is selected to the TOD position, is 0V
observed between terminals 42 and 47?

Go to 

Step 2

Go to 

Step 4

2

1. The car stops, the AT selector is N position, and the brake is

applied.

2. Select the TOD switch to the 4L position.

Is 0V observed between terminals 42 and 47?

Go to 

Step 3

Go to 

Step 4

3

1. The car stops, the AT selector is N position, and the brake is

applied.

When the TOD switch is selected to the 4L position, is 12V
observed between the terminal 19 and 47?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”.

The ECU has

failed. Replace

the ECU.

Go to 

Step 8

4

1. The car stops, the AT selector is N position, and the brake is

applied.

When the TOD switch is selected to the 2H position, is the battery
voltage observed between the terminal 23 and 47.

Go to 

Step 5

Go to 

Step 7

5

When the TOD switch is selected to the TOD position (TOD
mode), is 0 

∼

 1V observed between terminals 23 and 47?

Go to 

Step 6

Go to 

Step 7

6

1. The car stops, the AT selector is N position, and the brake is

applied.

When the TOD switch is selected to the 4L position, is 0V
observed between terminals 23 and 47?

Repair the circuit

or check the

“Front Axle

Disconnect”.

(Refer to 

section

4B)

Go to 

Step 8

Go to 

Step 7

7

Is any of the trouble codes 28 (P1760), 32 (P1761) and 33
(P1762) recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

The ECU has

failed. Replace

the ECU.

Go to 

Step 8

8

Check that all the parts are mounted.

Is this step complete?

Verify the repair.

Go to 

Step 8

SECTION