Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual - part 642

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–88

Step

No

Yes

Action

13

1. Apply the brake and fully turn the steering to the left (or right)

end, and start the creep run.

Does the voltage between terminals 11 and 22 range between 0.1
and 1.0V?

Repair the

transfer

assembly.

 Go to Step 16

The ECU has

failed. Replace

the ECU.

 Go to Step 16

14

1. Shift the transfer lever to the high (TOD) position and switch

the 4WD AUTO switch to 4WD position.

2. Fully turn the steering to the left (or right) end, and select the D

range and start the creep run.

Does the voltage between terminals 11 and 22 range between 0.1
and 1.0V?

 Go to Step 15

 Go to Step 10

15

1. Select the 4WD Auto Switch to the 2WD position.
2. Jack up the right front wheel.

Does the front tire rotate smoothly?

The phenomenon

is not

reproduced.

Refer to

“Troubles

intermittently

observed”.

Repair the

transfer

assembly.

 Go to Step 16

16

Check that all the parts are mounted.

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 16

*NOTE: Before checking this item, run the vehicle more
than 10 meters with the steering wheel in straight position
so that the 4L mechanical lock sleeve can be released
certainly.

4B2–89

DRIVE LINE CONTROL SYSTEM (TOD)

Chart 2

The 4WD mode is not active.

Function of circuit

—

Fail condition

The rear wheels spin in the TOD mode, so the driving torque is not transmitted to the

front wheels.  The indicator lamps will not show the 4L and TOD status.

D04RY00009

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–90

Step

Action

Yes

No

1

Is the trouble code 31(P1721) or 26 recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

 Go to Step 7

Go to Step 2

2

Is any of the trouble codes 28(P1760), 32(P1761) and 33(P1762)
recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

Go to Step 3

3

When the transfer lever and 4WD switch are in the specified
position, do the TOD indicator lamps show the correct status?

Go to Step 4

Examine the

trouble based on

“Trouble

Diagnosis

Depending on

The Status of

TOD Indicator”.

4

Shift the transfer lever to the 4L position, fully turn the steering to
the left (or right) end, and start the creep run.  Does the tight
corner braking occur?

 Go to Step 5

Repair the

transfer

assembly.

 Go to Step 7

5

1. Shift the transfer lever to the high (TOD) position.
2. Turn on the starter switch.

Does the voltage between terminals 11 and 22 indicate at least 3V
while the throttle is completely open?

 Go to Step 6

The ECU has

failed. Replace

the ECU.

 Go to Step 7

6

Does the voltage between terminals 11 and 22 indicate at least
0.1V while the throttle is completely closed?

The TOD clutch

is worn. Repair

the transfer

assembly.

 Go to Step 7

The ECU has

failed. Replace

the ECU.

 Go to Step 7

7

Check that all the parts are mounted.

Is this step complete?

Repeat the

“Diagnosis Flow”.

Return to Step 7

4B2–91

DRIVE LINE CONTROL SYSTEM (TOD)

Chart 3

The shift on the fly system generates gear noises.

(The fuel economy is bad in the 2H mode.)

Function of circuit

—

Fail condition

When the vehicle is run in the 2H mode, the shift on the fly system generates gear

noises or the front wheel gears are engaged to generate a shock.

D04RY00015