1998 OPEL FRONTERA Workshop Manual

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Page 657 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–86
Diagnosis from Symptom
Troubles that are not indicated by the warning lamp are
listed in the table below. These troubles are caused by
the faults that cannot

Page 658 of 6000

OPEL FRONTERA 1998 Workshop Manual 4B2–87 DRIVE LINE CONTROL SYSTEM (TOD)
Chart 1The tight corner braking is observed.
Function of circuit—
Fail conditionWhen the vehicle is subject to full steering in the TOD mode, the drive resis

Page 659 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–88
StepActionYe sNo
1Are 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

DRIVE LINE CONTROL SYSTEM (TOD) 4B2–88
StepActionYe sNo
1Are 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
2Is the tire pressure correct?
Go to Step 3
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
3Are 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
4Are different types of tires used?
Go to Step 5
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
51. Start the engine.
2. Shift the transfer lever to the high (TOD) 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
61. Shift the transfer lever 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
7Is an LSD mounted to the rear differential? Go to Step 8 Go to Step 9
8Is the genuine LSD oil used in the rear differential?
Go to Step 9
Replace the
differential oil.
Go to Step 16
9Does the engine output the power correctly?
Go to Step 10
Check the
engine.
Go to Step 16
10Do 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
11Is the tight corner braking observed only when the brake is
applied?
Go to Step 12
Conduct full
steering under
WOT.
Go to Step 5
121. Turn off the starter switch.
2. Disconnect the ECU connector.
Is the battery voltage observed between terminals (B–68)6 and
(B–67)11?
Go to Step 13
Repair the circuit
of terminal 6
(ABS IN).
Go to Step 16

Page 660 of 6000

OPEL FRONTERA 1998 Workshop Manual 4B2–89 DRIVE LINE CONTROL SYSTEM (TOD)
StepNo Ye s Action
131. 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 a

Page 661 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–90
Chart 2The 4WD mode is not active.
Function of circuit—
Fail conditionThe rear wheels spin in the TOD mode, so the driving torque is not transmitted to the
f

Page 662 of 6000

OPEL FRONTERA 1998 Workshop Manual 4B2–91 DRIVE LINE CONTROL SYSTEM (TOD)
StepActionYe sNo
1Is the trouble code 31 or 26 recorded?Examine the
trouble based on
“Diagnosis from
Trouble Codes”.
Go to Step 7
Go to Step 2
2Is any of

Page 663 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–92
Chart 3The shift on the fly system generates gear noises.
(The fuel economy is bad in the 2H mode.)
Function of circuit—
Fail conditionWhen the vehicle is ru

Page 664 of 6000

OPEL FRONTERA 1998 Workshop Manual 4B2–93 DRIVE LINE CONTROL SYSTEM (TOD)
StepActionYe sNo
1Do the indicator lamps show the correct status?
Go to Step 2
Examine the
trouble based on
“Diagnosis from
Trouble Codes”.
Go to Step 2
2

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