Opel Frontera UE. Manual - part 1340

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–100

Chart H

Lighting switch circuit

Function of circuit

Reads in the status of lighting switch, and reduces the indicator at night.

Fail condition

Even if the lighting switch is pressed on and off, brightness does not change.

Indicator lamp state

TOD switch position

All position (exsample TOD mode)

D04R100011

SECTION

4B2–101

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

1. Turn on the starter switch.
2. Turn off the lighting switch.

Is 0V observed between the EUC terminal 40 and 47?

Go to 

Step 2

Lighting switch

battery circuit

short. Repair the

circuit.

Go to 

Step 4

2

Turn lighting switch “ON”.

Is the battery voltage observed between ECU terminal 40 and 47?

Go to 

Step 3

Wires are broken

in lighting switch

circuit. Repair the

circuit.

Go to 

Step 4

3

While the lighting switch is pressed on and off, does the
brightness of the indicator change?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”

The ECU has

failed. Replace

the ECU.

Go to 

Step 4

4

Check that all the parts are mounted.

Is this step complete?

Verify the repair.

Go to 

Step 4

SECTION

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–102

Diagnosis from Symptom

Troubles that are not indicated by the warning lamp are
listed in the table below. These troubles are caused by the
faults that cannot be detected by the self-diagnostic
function of the control unit.
If this type of trouble is observed, interview the customer
and conduct test runs to reproduce the trouble,
cross-check the reported trouble with the listed
phenomena, and diagnose and analyze the trouble on the
item by item basis.

Phenomena

Major cause

Corrective action

1

The tight corner braking is
observed when the vehicle is
subject to full steering.

D

The standard tires are not used.

D

The tire pressure is incorrect.

D

The tires are worn inuniformity.

D

The transfer or wiring is
imperfect.

D

The limited slip differential is
failed.

Check and recondition the
vehicle according to Chart 1.

2

Even if the TOD switch is selected
to the TOD position, the F4WD
mode is not active, resulting in
remarkable rear wheel spin.

D

The transfer or wiring is
imperfect.

D

The shift on the fly system is
failed.

Check and recondition the
vehicle according to Chart 2.

3

D

When the TOD switch is
selected to the TOD position,
the drive resistance of the
F4WD system is too large to get
sufficient running speed.

D

Noised drive line.

D

The standard tires are not used.

D

The tires are worn inuniformity.

D

The transfer or wiring is
imperfect.

D

The limited slip differential is
failed. 

Check and recondition the
vehicle according to Chart 1.

4

The shift on the fly system (front
axle disconnect) generates gear
noises.

D

The wiring is imperfect.

D

The shift on the fly system is
failed.

Check and recondition the
vehicle according to Chart 3.

5

The braking distance gets long
even when the ABS is active.

D

The wiring is imperfect.

D

The ABS is failed.

Check and recondition the
vehicle according to Chart 4.

6

The transfer does not change to the
low range from the high range.

D

The transfer or wiring is
imperfect.

D

The TOD switch is imperfect.

D

The AT inhibitor switch is
imperfect.

Check and recondition the
vehicle according to chart 5.

7

The transfer does not change to the
high range from the low range.

im erfect.

D

The brake switch is imperfect.

D

The engine speed signal is
imperfect.

D

The speed sensor is imperfect.

Check and recondition the
vehicle according to chart 6.

8

The transfer stays neutral and the
vehicle does not run.

D

The transfer is imperfect.

Check and recondition the
vehicle according to chart 7.

SECTION

4B2–103

DRIVE LINE CONTROL SYSTEM (TOD)

Chart 1

The tight corner braking is observed.

Function of circuit

—

Fail condition

When the vehicle is subject to full steering in the TOD mode, the drive resistance gets

large or the judder occurs. Otherwise, the above phenomenon is observed only when the

brake is applied.

D04R100010

SECTION