Isuzu Trooper (1998-2002 year). Manual - part 146

4B2–71

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

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

Does the resistance between terminals (B–67) 5 and (B–67) 11
meet the standard, 17<R<25 ohms?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”. 

Go to Step 2

2

Is the resistance between terminals (B–67) 5 and (B–67) 11 R<2
ohms?

The signal line

circuit of the shift
on the fly system

is short-circuited

to GND. Repair

the circuit. 

Go to Step 4

Go to Step 3

3

Is the resistance between terminals (B–67) 5 and (B–67) 11 R=
9

±

7ohms?

The signal line

circuit of the shift
on the fly system

is layer

short-circuited*.

Replace the valve

(VSV).

Go to Step 4

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

*Layer short-circuit : The coil is damaged by overcurrent.

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–72

Check flow

Trouble code

Phenomenon

Standard

14

25

The CHECK lamp indicator line is

short–circuited to the battery.

—

35

The line is broken or short–circuited

to GND.

—

D04RY00063

4B2–73

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

1. Turn on the starter switch.

Is the CHECK lamp always turned on?

Go to Step 2

Go to Step 3

2

1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.

Is the CHECK lamp always turned on?

The CHECK

circuit is

short-circuited to
GND. Repair the

circuit.

Go to Step 7

The ECU has

failed. Replace

the ECU.

Go to Step 7

3

Turn on the starter switch.

Is the CHECK lamp always turned off?

Go to Step 4

Go to Step 6

4

Turn on the starter switch.

Is the battery voltage observed between terminals 30 and 19?

Go to Step 5

The CHECK

circuit wires are

broken or the

CHECK lamp is

failed. Repair the

circuit.

Go to Step 7

5

Turn off the starter switch.

Is the battery voltage observed between terminals 30 and 19?

The battery is

short–circuited.

Repair the

CHECK lamp

circuit.

Go to Step 7

The ECU has

failed. Replace

the ECU.

Go to Step 7

6

Turn on the starter switch.

Does the CHECK lamp go off two seconds after?

The phenomenon

is not

reproduced.Refer

to “Troubles

intermittently

observed”.

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)

4B2–74

Trouble Diagnosis Depending on The
Status of TOD Indicator

Functional check with TOD indicator light is conducted
prior to check on Charts A–H.

D

After the starter is switched on, check and see if the
status has become as tabulated below.

C07RW012–1

D

If the status is as tabulated above, there is no
problem.  If not as tabulated above, inspect the
harness.