Isuzu Trooper (1998-2002 year). Service manual — part 157
4B2–115
DRIVE LINE CONTROL SYSTEM (TOD)
Chart 1
The tight corner braking is observed.
Function of circuit
—
Fail condition
When the vehicle is subject to full steering in the TOD mode, the drive resistance gets
large or the judder occurs. Otherwise, the above phenomenon is observed only when the
brake is applied.
D04RY00073
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–116
Step
Action
Yes
No
1
Are the front and rear tires in specified size?
Go to Step 2
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
2
Is the tire pressure correct?
Go to Step 3
In flate tries to
recommended
pressure.
Go to Step 16
3
Are the tires free from abnormal wear?
Go to Step 4
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
4
Are different types of tires used?
Go to Step 5
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
5
1. Start the engine.
2. Shift the transfer lever to the high position and switch the 4WD
AUTO SW to 4WD position.
3. Fully turn the steering to the left (or right) end, and select the D
range and start the creep run.
Does the tight corner braking occur? Is the judder with chug-chug
sound observed? * Use caution on the operation.
Go to Step 6
Go to Step 11
6
1. Shift the transfer lever to the high position and switch the 4WD
AUTO SW to the 2H position.
2. Fully turn the steering to the left (or right) end, and select the D
range and start the creep run.
Does the tight corner braking occur? Is the judder with chug-chug
sound observed? * Use caution on the operation.
Go to Step 7
Go to Step 14
7
Is an LSD mounted to the rear differential?
Go to Step 8
Go to Step 9
8
Is the genuine LSD oil used in the rear differential?
Go to Step 9
Replace the
differential oil.
Go to Step 16
9
Does the engine output the power correctly?
Go to Step 10
Check the
engine.
Go to Step 16
10
Do the speed sensors work correctly? (Check trouble codes.)
The ECU has
failed. Replace
the ECU.
Go to Step 16
Replace the
speed sensors.
Go to Step 16
11
Is the tight corner braking observed only when the brake is
applied?
Go to Step 12
Conduct full
steering under
WOT.
Go to Step 5
12
1. Turn on the starter switch.
Is the battery voltage observed between terminals 11 and 19?
Go to Step 13
Repair the circuit
of terminal 11
(ABS IN).
Go to Step 16
4B2–117
DRIVE LINE CONTROL SYSTEM (TOD)
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 4 and 20 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 position and switch the 4WD
AUTO SW 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 4 and 20 range between 0.1
and 1.0V?
Go to Step 15
Go to Step 10
15
1. Select the 4WD AUTO SW 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”.
Go to Step 16
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.
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–118
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.
D04RY00073
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст