Opel Frontera UBS. Service manual — part 1035

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–80

Chart B–2

The 4WD AUTO switch circuit is short to battery.

Function of circuit

—

Fail condition

Even after the transfer mode is selected from 2H to TOD, the indicator lamp status dose

not change.

Indicator lamp status

Transfer position

TOD

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4B2–81

DRIVE LINE CONTROL SYSTEM (TOD)

D04RY00115

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–82

Step

Action

Yes

No

1

When the 4WD AUTO SW is selected to the 4WD position, is 0 V
observed between terminal 12 and 19?

Go to Step 2

Repair the 4WD

AUTO SW circuit.

Go to Step 7

2

When the 4WD AUTO SW is selected to the 2WD position, is 12 V
observed between terminals 12 and 19?

Go to Step 3

Repair the 4WD

AUTO SW circuit.

Go to Step 7

3

1. Disconnect the ECU connector.

Is the continuity established between terminals (B–67)1 and
(B–68)13?

Go to Step 4

Replace TOD

indicator lamp

bulb.

Go to Step 7

4

Is the continuity established between terminals (B–67)1 and
(B–68)14?

Go to Step 5

Replace TOD

indicator lamp

bulb.

Go to Step 7

5

Is the continuity established between terminals (B–67)1 and
(B–68)15?

Go to Step 6

Replace TOD

indicator lamp

bulb.

Go to Step 7

6

Is the continuity established between terminals (B–67)1 and
(B–68)16?

Replace ECU.

Go to Step 7

Replace TOD

indicator lamp

bulb.

Go to Step 7

7

Check that all the parts are mounted.

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 7

4B2–83

DRIVE LINE CONTROL SYSTEM (TOD)

Chart C–1

4H switch circuit wires are broken or the battery is short-circuited.

Function of circuit

—

Fail condition

When the 4WD AUTO SW is 4WD mode.

When the lever is shifted from 4L to HIGH, the 4L mode remains on the indicator and the

TOD mode is displayed without turning off the previous mode.

Indicator lamp status

Transfer position

4L <——> Neutral <——> TOD

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