Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 635

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–60

Step

Action

Yes

No

1

1. Turn on the starter switch.

When the 4WD Auto Switch is select to the 4WD position, is 0 V
observed between terminal 30 and 46?

Go to Step 2

Repair the 4WD

Auto Switch

circuit.

Go to Step 4

2

When the 4WD Auto Switch is select to the 2WD position, is 12 V
observed between terminals 30 and 46?

Go to Step 3

Repair the 4WD

Auto Switch

circuit.

Go to Step 4

3

When the transfer lever is shifted to the 4L position, is battery
boltage observed between terminals 19 and 46?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”.

Replace the

ECU.

Go to Step 4

4

Check that all the parts are mounted.

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 4

4B2–61

DRIVE LINE CONTROL SYSTEM (TOD)

Chart B–2

The 4WD AUTO SWITCH circuit is short to battery.

Function of circuit

—

Fail condition

Even after the transfer mode is select from 2H to TOD the indicator lamp status does not

change.

Indicator lamp status

Transfer lever position

High

4WD Auto Switch

D04RY00015

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–62

Step

Action

Yes

No

1

When the 4WD Auto Switch is select to the 4WD position, is 0 V
observed between terminal 30 and 46?

Go to Step 2

Repair the 4WD

Auto Switch

circuit.

Go to Step 7

2

When the 4WD Auto Switch is select to the 2WD position, is 12 V
observed between terminals 30 and 46?

Go to Step 3

Repair the 4WD

Auto Switch

circuit.

Go to Step 7

3

1. Disconnect the ECU connector.

Is the continuity established between terminals (B–49)14 and
(B–49)17?

Go to Step 4

Replace TOD

indicator lamp

bulb or repair the

circuit.

Go to Step 7

4

Is the continuity established between terminals (B–49)14 and
(B–49)6?

Go to Step 5

Replace TOD

indicator lamp

bulb or repair the

circuit.

Go to Step 7

5

Is the continuity established between terminals (B–49)14 and
(B–49)18?

Go to Step 6

Replace TOD

indicator lamp

bulb or repair the

circuit.

Go to Step 7

6

Is the continuity established between terminals (B–49)14 and
(B–49)19?

Replace ECU.

Go to Step 7

Replace TOD

indicator lamp

bulb or repair the

circuit.

Go to Step 7

7

Check that all the parts are mounted.

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 7

4B2–63

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 Switch is 4WD mode.

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

TOD mode is displayed without turning off the previous mode.

Indicator lamp status

Transfer lever position

4L <——> Middle between 4L and High <——> High

4WD Auto Switch

D04RY00015