Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 122

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–106

Chart 2

The TOD 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.

D04R200021

4B2–107

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

Is the trouble code 31(P1721) recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

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 TOD switch is selected to 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

Select the TOD switch 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. Select the TOD switch to the 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?

Verify the repair.

Go to 

Step 7

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–108

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.

D04R200021

4B2–109

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

Do the indicator lamps show the correct status?

Go to 

Step 2

Examine the

trouble based on

“Trouble

Diagnosis

Depending on the

Status of TOD

Indicator”.

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

Turn on the starter switch.

Is the battery voltage observed between terminals 14 and 47?

Go to 

Step 4

Go to 

Step 5

4

When the TOD Switch is selected to the 2H position, are the front
axle gears correctly disengaged (and when the left front tire is
jacked up and turned, is the front propeller shaft standstill)?

The phenomenon

is not

reproduced.

Refer to 

“Trouble

intermittently

observed”.

The shift on the

fly system is

failed (refer to

Section 4B1 and

4C).

5

Does the battery voltage maintain the correct level?

Repair the battery

circuit.

 Go to 

Step 6

Repair the battery

and charging

system.

 Go to 

Step 6

6

Check that all the parts are mounted.

Is this step complete?

Verify the repair.

Go to 

Step 6