Isuzu Trooper (2000 year). Manual - part 108

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–52

Check flow

Trouble code

Phenomenon

Standard

13

33

The ADC line is short-circuited to

GND.

—

NOTE:

D

The on/off signal line of the shift on the fly system is
short–circuited to GND.

D

The system enters into the fail-safe mode because of
fusing or system protection.

(If a short–circuit is observed on GND, the output to
the on/off signal line becomes 0V.)

D04RY00008

4B2–53

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–48)1 and (B–48)24
meet the standard, R = 21 

±

 4 ohms?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”. 

Go to Step 4

Go to Step 2

2

Is the resistance between terminals (B–48)1 and (B–48)24 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–48)1 and (B–48)24 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)

4B2–54

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.

C07RY00019

D

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

4B2–55

DRIVE LINE CONTROL SYSTEM (TOD)

Chart A

Indicator drive circuit

Function of circuit

The circuit informs the indicator of the working condition of the ECU.

Fail condition

All the TOD indicator lamps and CHECK lamp are lit, and go off momentarily at an inter-

val of about two seconds.

Indicator lamp status

—

Transfer position

2H, TOD, 4L

—

D04RY00015