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DRIVETRAIN SYSTEM
SERVICE INFORMATION
GENERAL
This
"Drivetrain
System"
section covers service
of
the Automatic Transmission
(AfT)
system and drive mode
(2WD.
4WD
,
4WD
with the differential locked) selector.
A
faulty
drivetrain system is often related to poorly connected or corroded
connectors.
Check Ihose connections before
proceeding.
Read
"Drivetrain Troubleshooting
Information~
carefully,
and inspect and troubleshoot
the
drivetrain system according
to
the
oTC.
Observe each step of the procedures one by
one.
Note the DTG
and
probable faulty part before starting diagnosis and
troubleshooting.
The PCM
may be
damaged
if
dropped. Also,
if a
connector
is disconnected when
current
is
flowing,
the excessive voltage may
damage the
PCM.
Always turn off the ignition switch before servicing.
The
engine must be
removed
from the frame when servicing the torque converter and 1st
shift
clutch.
To service the mainshaft
and 2nd/3rd shift clutch
(countershaft),
the
crankcase halves must be separated (page
14-5).
The engine oil is used for AIT
oil.
lubrication system
service (oil
pump and oil cooler)
(page
B-2).
AIT
and
lubricating
all
is
fed through the oil passage in the front crankcase
cover.
Clean the oil passages before installing the
crankcase cover.
Be careful not to damage the crankcase
and
cover mating surfaces when servicing.
Replace the
torque converter
as
an assembly
if
it is
faulty.
Front final clutch and differential lock clu tch service (page
1B-19).
Drive mode selector lever service (page
1B-63).
Sub-transmission
(Forward-Neutral-Reverse)
service (page
13-3).
For
Drivetrain System Troubleshooting
The drivetrain system
is
controlled by the PCM
.
Therefore
some
detection items that are shared
in
the
PGM-FI and drivetrain
systems,
and they may affect the operation of both systems
Before starting any
troubleshooting,
check the follOWing Items and refer to the appropriate troubleshooting
.
1.
Mil blinks or
OTG
for
the
PGM-FI system and AIT system
(page
4-7).
2.
Symptom
troubleshooting of
the AIT system
(page
16-5).
TOOLS
Pressure gauge set
07406-0020005
or
07ZMJ-HN2A 100 and
07AMJ-HNBA100
(U.S.A. only)
Pilot,
17 mm
07746-0040400
Remover weight
07741-0010201
or 07936-371020A
or 07936-3710200
(U.S.A
. only)
Pilot,
25 mm
07746-0040600
Attachment,
42
x
47 mm
07746-0010300
Driver
07749-0010000
.h
16·3
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Table of Contents
Troubleshooting
