service OPEL FRONTERA 1998 Workshop Manual

Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE
SRS COMPONENTS OR THE SRS WIRING, REFER
TO THE SRS SERVICE INFORMATION. FAILURE
TO FOLLOW WARNINGS COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNEEDED SRS
SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or
other corrosion inhibitors) on threaded fasteners
or fasteners joint interfaces. Generally, such
coatings adversely affect the fastener torque and
the joint clamping force, and may damage the
fastener. When you install fasteners, use the
correct tightening sequence and specification.
Following these instructions can help you avoid
damage to parts and systems.

Legend
(1) Drive Plate Bolt
(2) Drive Plate
(3) Snap Ring(4) Pulley Assembly
(5) Field Coil
(6) Shim(s)
(7) Lead Wire
Removal
1. Remove drive plate bolt by using drive plate holder
J-7624 (1) to prevent the drive plate from rotating.2. Remove drive plate by using drive plate puller
J-33944-A (2) and forcing screw J-33944-4 (1).
SERVICE PROCEDURE
DKV-14D TYPE COMPRESSOR
1
2
3
4
5
67
871RX012
1
901RX055
1
2
871RX016

COMPRESSOR SHAFT SEAL
Service Precaution
When replacing the shaft seal assembly, pressure relief
valve or control switches, it will be necessary to recover
the refrigerant. Other than clutch repair procedures, the
same holds true for any disassembly of the compressor.
A clean workbench covered with a sheet of clean
paper, and a place (clean trays, etc) for all parts being
removed and replaced is important, as is the use of
proper clean service tools.
CAUTION: Any attempt to use makeshift or
inadequate service tools or equipment may result
in damage and/or improper compressor operation.
All parts required for servicing the internal compressor
are protected by a preservative process and packaged
in a manner which will eliminate the necessity of
cleaning, washing or flushing of the parts. The parts
can be used in the internal assembly just as they are
removed from the service package. Seals and
protective packaging should be left intact until just
prior to installation.
If the compressor rear head, front head or cylinder and
shaft assembly is to be serviced or replaced, the oil in
the compressor must be drained, measured, recorded
and replaced.
Legend
(1) Suction Port
(2) Discharge Port
(3) Mounting Boss
(4) Mounting Boss
(5) Pressure Relief Valve
(6) Mounting Boss
Seal Leak Detection
A shaft seal should not be changed because of small
amounts of oil found on an adjacent surface but only
after actual refrigerant leakage is found using an
approved leak detector.
CAUTION: Handling and care of seal protector is
important. If seal protector is nicked or the bottom
flared, the new seal may be damaged during
installation.
Removal
1. Recover the refrigerant using Refrigerant Recovery
System.
2. Loosen and reposition compressor in mounting
brackets, if necessary.
3. Remove clutch plate and hub assembly from
compressor as described previously.
4. Remove the shaft seal retainer ring, using snap ring
pliers.
5. Thoroughly clean inside of compressor neck area
surrounding the shaft, the exposed portion of the
seal, the retainer ring groove and the shaft itself.
Any dirt or foreign material getting into compressor
may cause damage.
6. Fully engage the knurled tangs of Seal Remover-
Installer J-23128-A into the recessed portion of the
Seal (1) by turning the handle clockwise. Remove
the Seal from the compressor with a rotary-pulling
motion.
Discard the seal. The handle must be hand-
tightened securely. Do not use a wrench or pliers.
1
2
3
456
871RW006
J-23128-A1
901RW008

7. Remove and discard the seal seat O-ring (2) from the
compressor neck using O-ring remover J-9553-01.
8. Recheck the shaft and inside of the compressor
neck for dirt or foreign material and be sure these
areas are perfectly clean before installing new parts.
Cleaning
Thoroughly clean O-ring seal groove in front head.
CAUTION: Seals should not be re-used. Always use
a new specification service seal on rebuild. Be sure
that the seal to be installed is not scratched or
damaged in anyway. Make sure that the seal seat
and seal are free of lint and dirt that could damage
the seal surface or prevent sealing.
Installation
1. Dip the new seal seat O-ring (1) in clean 525
viscosity refrigerant oil and assemble onto O-ring
installer J-33011.2. Insert the O-ring installer J-33011 into the
compressor neck until the installer "bottoms". Lower
the moveable slide of the O-ring installer to release
the O-ring into the seal O-ring lower groove (The
compressor neck top groove is for the shaft seal
retainer ring.) Rotate the installer to seat the O-ring
and remove the installer.
3. Dip the new seal in clean 525 viscosity refrigerant oil
and assemble seal to Seal Installer J-23128-A, by
turning handle clockwise. The stamped steel case
side of the lip seal must be engaged with knurled
tangs of installer so that flared-out side of lip seal is
facing and installed towards the compressor. Install
seal protector J-34614, in the seal lip and place over
the compressor shaft, and push the seal in place with
a rotary motion or place the seal protector J-34614
over end of compressor shaft, and slide the new seal
onto the shaft with a rotary motion until it stops. Take
care not to dislodge the O-ring. Be sure the seal (2)
makes good contact with the O-ring. Disengage the
installer from the seal and remove the installer
J-23128-A and the seal protector J-34614.
CAUTION: Handling and care of seal protector is
important. If seal protector is nicked or the bottom
flared, the new seal may be damaged during
installation.
4. Install the new seal retainer ring with its flat side
against the Seal, using Snap-Ring Pliers. Use the
sleeve from O-ring installer J-33011 to press in on
the seal retainer ring so that it snaps into its groove.
5. To leak test, install compressor leak test fixture
J-39893 on rear head of compressor and connect
gage charging lines and Refrigerant Recovery
System. Pressurize suction and high-side of
compressor with R-134a Refrigerant. Temporarily
install (M9
1.25 thread on shaft) nut and, with the
compressor in horizontal position, rotate the
compressor shaft in normal direction of rotation
several times by hand. Leak test the seal area and
correct and leak found. Recover the refrigerant.
Remove shaft nut.
2 J-9553-01
901RW009
1
J-33011
901RW010
J-34614
2
J-23128-A
901RW011

6. Remove any excess oil resulting from installing the
new seal parts from the shaft and inside the
compressor neck.
7. Install the clutch plate and hub assembly as
described previously.8. Reinstall compressor belt and tighten bracket.
9. Evacuate and charge the refrigerant system.
COMPRESSOR PRESSURE RELIEF VALVE
Removal
1. Recover the refrigerant using Refrigerant Recovery
System.
2. Remove old pressure relief valve.
Installation
1. Clean valve seat area on rear head.2. Lubricate O-ring of new pressure relief valve and
O-ring assembly with new 525 viscosity refrigerant
oil. Install new valve and torque in place, 9.0 Nꞏm
(6.1 ft lbs)
3. Evacuate and recharge the system.
4. Leak test system.
COMPRESSOR OIL
Compressor Oil Check
The oil used to lubricate the compressor is circulating
with the refrigerant.
Whenever replacing any component of the system or a
large amount of gas leakage occurs, add oil to maintain
the original amount of oil.
Checking and Adjusting Oil Quantity for
Used Compressor
1. Perform oil return operation. Refer to Oil Return
Operation in this section.
2. Discharge and recover refrigerant and remove the
compressor.
3. Drain the compressor oil and measure the extracted
oil with a measuring cylinder.
4. If the amount of oil drained is much less than 90 cc
(3.0 fl. oz.), some refrigerant may have leaked out.
Conduct a leak tests on the connections of each
system, and if necessary, repair or replace faulty
parts.
5. Check the compressor oil contamination. (Refer to
Contamination of Compressor Oil in this section.)
6. Adjust the oil level following the next procedure
below.7. Install the compressor, then evacuate, charge and
perform the oil return operation.
8. Check system operation.
When it is impossible to preform oil return
operation, the compressor oil should be checked in
the following order:
1. Discharge and recover refrigerant and remove the
compressor.
2. Drain the compressor oil and measure the extracted
oil with a measuring cylinder.
3. Check the oil for contamination.
4. If more than 90 cc (3.0 fl. oz.) of oil is extracted from
the compressor, supply the same amount of oil to
the compressor to be installed. If the amount of oil
extracted is less than 90 cc (3.0 fl. oz.), recheck the
compressor oil in the following order:
5. Supply 90 cc (3.0 fl. oz.) of oil to the compressor
and install it onto the vehicle.
6. Evacuate and recharge with the proper amount of
refrigerant.
7. Perform the oil return operation.
8. Remove the compressor and recheck the amount of
oil.
9. Adjust the compressor oil, if necessary.
Checking and Adjusting for Compressor
Replacement
The oil is not charged in compressor (service parts). So
it is necessary to charge the proper amount of oil to the
new compressor. (Oil Capacity)
Capacity total in system 150 cc (5.0 fl.oz)
Compressor (Service 150 cc (5.0 fl.oz)
parts) charging amount
(Collected Amount) (Charging Amount)
more than 90 cc same as collected
(3.0 fl.oz) amount
less than 90 cc (3.0 fl.oz) 90 cc (3.0 fl.oz)
(Collected Amount) (Charging Amount)
more than 90 cc same as collected
(3.0 fl.oz) amount
less than 90 cc (3.0 fl.oz) 90 cc (3.0 fl.oz)

4A1–1 DIFFERENTIAL (FRONT)
DRIVELINE/AXLE
CONTENTS
Differential (Front) 4A1. . . . . . . . . . . . . . . . . . . . . . .
Differential (Rear/220mm) 4A2A. . . . . . . . . . . . . . . .
Differential (Rear/244mm) 4A2B. . . . . . . . . . . . . . . .
Driveline Control System (Shift on the Fly) 4B1. . Driveline Control System (TOD) 4B2. . . . . . . . . . .
Driveshaft System 4C. . . . . . . . . . . . . . . . . . . . . . .
Transfer Case (Standard Type) 4D1. . . . . . . . . . .
Transfer Case (TOD) 4D2. . . . . . . . . . . . . . . . . . . .
DIFFERENTIAL (FRONT)
CONTENTS
Service Precaution 4A1–1. . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle 4A1–2. . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis 4A1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Shaft Oil Seal 4A1–3. . . . . . . . . . . . . . . . . . . . .
Pinion Shaft Oil Seal and Associated Parts 4A1–3
Removal 4A1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A1–4. . . . . . . . . . . . . . . . . .
Installation 4A1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Assembly 4A1–5. . . . . . . . . . . . . . .
Front Drive Axle Assembly and
Associated Parts 4A1–5. . . . . . . . . . . . . . . . . . . . . .
Removal 4A1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 4A1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Assembly 4A1–9. . . . . . . . . . . . . . . . . . . .
Disassembled View 4A1–9. . . . . . . . . . . . . . . . . . . .
Disassembly 4A1–10. . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly 4A1–12. . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Cage Assembly 4A1–21. . . . . . . . . . . . . . .
Disassembled View 4A1–21. . . . . . . . . . . . . . . . . . . .
Disassembly 4A1–21. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A1–22. . . . . . . . . . . . . . . . . .
Reassembly 4A1–23. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 4A1–25. . . . . . . . . . .
Special Tools 4A1–28. . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE REFORMING SERVICE ON
OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED , do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally,such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specification. Following these
instructions can help you avoid damage to parts and
systems.

DIFFERENTIAL (REAR 220mm)
4A2A–1
DRIVELINE/AXLE
DIFFERENTIAL (Rear 220mm)
CONTENTS
Service Precaution 4A2A–1. . . . . . . . . . . . . . . . . . . . . .
General Description 4A2A–2. . . . . . . . . . . . . . . . . . . . .
Diagnosis 4A2A–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Housing 4A2A–4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Housing and Associated Parts 4A2A–4. . . . . .
Removal 4A2A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Seal Replacement 4A2A–5. . . . . . . . . . . . . . . . . .
Installation 4A2A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Shaft 4A2A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Shaft and Associated Parts 4A2A–6. . . . . . . . .
Removal 4A2A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2A–7. . . . . . . . . . . . . . . . . .
Oil Seal Replacement 4A2A–8. . . . . . . . . . . . . . . . . .
Installation 4A2A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Oil Seal 4A2A–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Oil Seal and Associated Parts 4A2A–9. . . . .
Removal 4A2A–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2A–10. . . . . . . . . . . . . . . . . .
Installation 4A2A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . Differential Assembly 4A2A–11. . . . . . . . . . . . . . . . . . . .
Differential Assembly and Associated Parts 4A2A–11
Removal 4A2A–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4A2A–12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 4A2A–13. . . . . . . . . . . . . . . . . . . .
Disassembly 4A2A–14. . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly 4A2A–16. . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Cage Assembly 4A2A–24. . . . . . . . . . . . . . .
Disassembled View 4A2A–24. . . . . . . . . . . . . . . . . . . .
Disassembly 4A2A–24. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2A–25. . . . . . . . . . . . . . . . . .
Reassembly 4A2A–26. . . . . . . . . . . . . . . . . . . . . . . . . .
Limited Slip Differential 4A2A–28. . . . . . . . . . . . . . . . . . .
Disassembled View 4A2A–28. . . . . . . . . . . . . . . . . . . .
Disassembly 4A2A–29. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2A–29. . . . . . . . . . . . . . . . . .
Reassembly 4A2A–31. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 4A2A–35. . . . . . . . . . .
Special Tools 4A2A–37. . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE REFORMING SERVICE ON
OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED , do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally,such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specification. Following these
instructions can help you avoid damage to parts and
systems.

DIFFERENTIAL (REAR 244mm)
4A2B–1
DRIVELINE/AXLE
DIFFERENTIAL (REAR 244mm)
CONTENTS
Service Precaution 4A2B–1. . . . . . . . . . . . . . . . . . . . . .
General Description 4A2B–3. . . . . . . . . . . . . . . . . . . . .
Diagnosis 4A2B–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Housing 4A2B–5. . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Housing and Associated Parts 4A2B–5. . . . . .
Removal 4A2B–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Seal Replacement 4A2B–6. . . . . . . . . . . . . . . . . .
Installation 4A2B–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Shaft 4A2B–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle Shaft and Associated Parts 4A2B–7. . . . . . . . .
Removal 4A2B–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2B–8. . . . . . . . . . . . . . . . . .
Oil Seal Replacement 4A2B–9. . . . . . . . . . . . . . . . . .
Installation 4A2B–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Oil Seal 4A2B–10. . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Oil Seal and Associated Parts 4A2B–10. . . . .
Removal 4A2B–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2B–11. . . . . . . . . . . . . . . . . .
Installation 4A2B–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . Differential Assembly 4A2B–12. . . . . . . . . . . . . . . . . . . .
Differential Assembly and Associated Parts 4A2B–12
Removal 4A2B–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4A2B–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 4A2B–14. . . . . . . . . . . . . . . . . . . .
Disassembly 4A2B–15. . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly 4A2B–17. . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Cage Assembly 4A2B–24. . . . . . . . . . . . . . .
Disassembled View 4A2B–24. . . . . . . . . . . . . . . . . . . .
Disassembly 4A2B–25. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2B–25. . . . . . . . . . . . . . . . . .
Reassembly 4A2B–26. . . . . . . . . . . . . . . . . . . . . . . . . .
Limited Slip Differential 4A2B–28. . . . . . . . . . . . . . . . . . .
Disassembled View 4A2B–28. . . . . . . . . . . . . . . . . . . .
Disassembly 4A2B–29. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 4A2B–29. . . . . . . . . . . . . . . . . .
Reassembly 4A2B–31. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 4A2B–35. . . . . . . . . . . . .
Special Tools 4A2B–37. . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE REFORMING SERVICE ON
OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED , do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally,such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specification. Following these
instructions can help you avoid damage to parts and
systems.
The
244 differential has two N types A-type and B-
type.
A-type: the sticker with bar code is attached.
B-type: the sticker with no bar code on the lower part
of carrier is attached.

4B1–1 DRIVE LINE CONTROL SYSTEM (SHIFT ON THE FLY)
DRIVELINE/AXLE
DRIVELINE CONTROL SYSTEM (SHIFT ON THE FLY)
CONTENTS
Service Precaution 4B1–1. . . . . . . . . . . . . . . . . . . . . .
Shift on the Fly System (Lever Type) 4B1–2. . . . . . .
Outline of Shift on the Fly System
(Lever Type) 4B1–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift on the Fly Vacuum Piping and Electric
Equipment (For Lever Control Type) 4B1–3. . . . . .
Vacuum Piping Diagram 4B1–3. . . . . . . . . . . . . . . .
Inspection and Repair 4B1–4. . . . . . . . . . . . . . . . . .
Shift on the Fly System (Push Button Type) 4B1–7.
Outline of Shift on the Fly System
(Push Button Type) 4B1–7. . . . . . . . . . . . . . . . . . . . Functions of Indicator Lamp 4B1–11. . . . . . . . . . . . . . .
Diagnosis 4B1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Axle Diagnosis 4B1–30. . . . . . . . . . . . . . . . . . .
Shift on the Fly Vacuum Piping and Electric
Equipment (For Push Button Type) 4B1–32. . . . . . . .
Vacuum Piping Diagram 4B1–32. . . . . . . . . . . . . . . .
Inspection and Repair 4B1–33. . . . . . . . . . . . . . . . . .
4WD Control Unit (For Push Button Type) 4B1–36. .
4WD Control Unit Associated Parts 4B1–36. . . . . .
Removal 4B1–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4B1–37. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

4B2–1 DRIVE LINE CONTROL SYSTEM (TOD)
DRIVELINE/AXLE
DRIVELINE CONTROL SYSTEM (TOD)
CONTENTS
Service Precaution 4B2–1. . . . . . . . . . . . . . . . . . . . . .
General Description 4B2–2. . . . . . . . . . . . . . . . . . . . .
System Components 4B2–4. . . . . . . . . . . . . . . . . . . .
Parts Location 4B2–4. . . . . . . . . . . . . . . . . . . . . . . .
Functions of Indicator Lamp 4B2–8. . . . . . . . . . . . . .
Diagnosis 4B2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Diagnostic Flow Chart 4B2–17. . . . . . . . . . . . . .
Parts Location 4B2–18. . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Diagram 4B2–22. . . . . . . . . . . . . . . . . . . . . . . . . Connector List 4B2–34. . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Failed Pin 4B2–36. . . . . . . . . . . . . . . . . . . . .
Checking Failed TOD Control Unit Pin 4B2–39. . . . .
Diagnostic Trouble Codes 4B2–43. . . . . . . . . . . . . . . .
Diagnosis from Trouble Codes 4B2–44. . . . . . . . . . . .
Trouble Diagnosis Depending on The Status
of TOD Indicator 4B2–74. . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis from Symptom 4B2–114. . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.