Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service 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
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