Isuzu Trooper (2000 year). Manual - part 107

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–48

Check flow

Trouble code

Phenomenon

Standard

11

28

The shift on the fly system (front

hub) works incorrectly.

—

NOTE: The shift on the fly system is not changed
between 2WD and 4WD modes normally.

CAUTION: If code 32 or 33 is also observed, remove
the trouble associated with code 32 or 33 first.

D04RY00008

4B2–49

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

1. Turn on the starter switch.
2. Set the transfer to the 2H mode.

Is the battery voltage observed between terminals 23 and 46?

Go to Step 2

Go to Step 5

2

Is the battery voltage observed between terminals 42 and 46?

Go to Step 3

Go to Step 6

3

1. Set the transfer to the high (TOD) mode.

Does the voltage between terminals 23 and 46 indicate 0V?

Go to Step 4

The ECU has

failed. Replace

the ECU.

Go to Step 7

4

Does the voltage between terminals 42 and 46 indicate 0V?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”.

Go to Step 7

The shift on the

fly system is

failed (refer to

Section 4C “Front

Axle”).

Go to Step 7

5

Does the TOD indicator show the 2H mode?

The ECU has

failed. Replace

the ECU.

Go to Step 7

See “Trouble

Diagnosis

Depending on

The Status of

TOD Indicator”.

Go to Step 7

6

Set the transfer to the high (TOD) mode.

Does the voltage between terminals 23 and 46 indicate 0V?

The shift on the

fly system has

failed (refer to

Section 4B1

“Driveline Control

System”).

Go to Step 7

The ECU has

failed. Replace

the ECU.

Go to Step 7

7

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

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 7

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–50

Check flow

Trouble code

Phenomenon

Standard

12

32

The on/off signal (ADC) line of the

shift on the fly system (front hub) is
broken, or the line is short-circuited

to the battery.

—

NOTE: The on/off signal line of the shift on the fly system
is broken, or the line is short–circuited to the battery.

D04RY00008

4B2–51

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

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

Is the continuity established between terminals (B–48)1 and
(B–48)24?

Go to Step 2

The harness is
broken. Repair

the circuit.

Go to Step 3

2

Does the voltage between terminals (B–48)1 and (B–48)24
indicate 0V?

Go to Step 3

The battery is

short-circuited.

Repair the circuit.

Go to Step 4

3

1. Turn off the starter switch.
2. Connect ECU connector.
3. Turn on the starter switch.
4. Set the transfer to the 2H mode.

Is the battery voltage observed between terminals 23 and 46?

The phenomenon

is not reproduced

Refer to

“Troubles

intermittently

observed”.

Go to Step 4

The ECU has

failed. Replace

the ECU.

Go to Step 4

4

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

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 4