transmission oil ISUZU TROOPER 1998 Service Repair Manual

ABBREVIATIONS CHARTS
LIST OF AUTOMOTIVE ABBREVIATIONS WHICH MAY BE USED IN THIS MANUAL
A Ð Ampere(s)
ABS Ð Antilock Brake System
A/C Ð Air Conditioning
ACCEL Ð Accelerator
ACC Ð Accessary
Adj Ð Adjust
A/F Ð Air Fuel Ratio
AIR Ð Air Injection Reaction System
ALDL Ð Assembly Line Diagnostic Link
Alt Ð Altitude
AMP Ð Ampere(s)
ANT Ð Antenna
APS Ð Absolute Pressure Sensor
ASM Ð Assembly
A/T Ð Automatic Transmission/Transaxle
ATDC Ð After Top Dead Center
Auth Ð Authority
Auto Ð Automatic
BARO Ð Barometic
Bat Ð Battery
Bat+ Ð Battery Positive Terminal
Bbl Ð Barrel
BCM Ð Body Control Module
BHP Ð Brake Horsepower
BP Ð Back Pressure
BTDC Ð Before Top Dead Center
¡C ÐDegrees Celsius
Cat. Conv. Ð Catalytic Converter
cc Ð Cubic Centimeter
CCC Ð Computer Command Control
CCOT Ð Cycling Clutch Orifice Tube
CCP Ð Controlled Canister Purge
CID Ð Cubic Inch Displacement
CL Ð Closed Loop
CLCC Ð Closed Loop Carburetor Control
CO Ð Carbon Monoxide
Coax Ð Coaxial
Conn Ð Connector
Conv Ð Converter
CP Ð Canister Purge
CPS Ð Central Power Supply
Crank Ð Crankshaft
CTS Ð Coolant Temperature Sensor
Cu.In. Ð Cubic Inch
CV Ð Constant Velocity
Cyl Ð Cylinder(s)
C
3I Ð Computer Controlled Coil Ignition
DBM Ð Dual Bed Monolith
Diff Ð Differential
DIS Ð Direct Ignition System
Dist ÐDistributor
DOHC Ð Double Overhead Camshaft
DVM Ð Digital Voltmeter (10 meg.)
DVOM Ð Digital Volt Ohmmeter
DVDV Ð Differential Vacuum Delay Valve
EAC ÐElectric Air Control
EAS Ð Electric Air Switching
EBCM Ð Electronic Brake Control Module
ECC Ð Electronic Climate Control
ECM Ð Electronic Control Module
ECU Ð Electronic Control Unit
Ð Engine Calibration Unit (PROM)
EECS Ð Evaporative Emission Control System
EFE Ð Early Fuel Evaporation
EFI Ð Electronic Fuel Injection
EGR Ð Exhaust Gas Recirculation
EGR/TVS Ð Exhaust Gas Recirculation/Thermostatic
Vacuum Switch
ELC Ð Electronic Level Control
ESC Ð Electronic Spark Control
EST Ð Electronic Spark Control
ETR Ð Electronically Tuned Receiver
EVRV Ð Electronic Vacuum Regulator Valve (EGR)
Exh Ð Exhaust
¡F Ð Degrees Fahrenheit
FF Ð Front Drive Front Engine
FL Ð Fusible Link
FLW Ð Fusible Link Wire
FRT ÐFront
FWD Ð Front Wheel Drive
4WD Ð Four Wheel Drive
4x4 Ð Four Wheel Drive
4 A/T Ð Four Speed Automatic Transmission/Transaxle
Gal Ð Gallon
Gen Ð Generator
Gov Ð Governor
g Ð Gram
Harn Ð Harness
HC Ð Hydrocarbons
HD ÐHeavy Duty
HEI Ð High Energy Ignition
Hg Ð Mercury
HiAlt Ð High Altitude
HVAC Ð Heater-Vent-Air Conditioning
IAC Ð Idle Air Control
IC Ð Integrated Circuit
ID Ð Identification
Ð Inside Diameter
IDI Ð Integrated Direct Ignition
IGN Ð Ignition
ILC Ð Idle Load Compensator
INJ ÐInjection
IP Ð Instrument Panel
IPC Ð Instrument Panel Cluster
INT Ð Intake
J/B Ð Junction Block
km Ð Kilometers
km/h Ð Kilometer per Hour
kPa Ð KiloPascals
KV Ð Kilovolts (thousands of volts)
KW Ð Kilowatts
0AÐ12 GENERAL INFORMATION

0BÐ2 MAINTENANCE AND LUBRICATION
MAINTENANCE SCHEDULE
GASOLINE ENGINE MODELI: Inspect and correct or replace as necessary A: Adjust
R: Replace or change T: Tighten to specified torque L: Lubricate
SERVICE INTERVAL: x 1,000 km
(Use odometer reading x 1,000 miles
or months whichever comes first) or months5
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1215
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1820
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2425
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3030
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3635
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4240
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4845
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5450
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6055
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6660
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7265
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7870
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8475
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9080
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9685
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10290
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10895
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114100
60
120
GASOLINE ENGINE
* Engine oil
* Engine oil filter
Oil leakage and contamination
* Timing belt
Spark plugs (For leaded fuel use)
Spark plugs (For unleaded fuel use)
Exhaust system
Radiator coolant concentration
Cooling system for water leakage
All hoses and pipes in engine compartment
for clog or damage
Fuel filter
Fuel leakage
Fuel tank
* Air cleaner element
Pre air cleaner
Engine drive belt
Valve clearance
O
2 Sensor (For leaded fuel use)
O
2 Sensor (For unleaded fuel use)-
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(Replace every 165,000 km or 100,000 miles)
(Replace every 165,000 km or 100,000 miles)
(Check and adjust if necessary every 100,000 km or 60,000 miles)
(Replace every 150,000 km or 90,000 miles)
CLUTCH
Clutch fluid
Clutch pedal travel and free play
TRANSMISSION OR TRANSMISSION WITH
TRANSFER CASE
* Manual transmission with transfer case oil
* Automatic transmission fluid leakage
*
(1)Automatic transmission fluid
* Transfer case oil
PROPELLER SHAFT
Loose connections
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Universal joints and splines for wear
Universal joints and sliding sleeve (front and rear)
FRONT AND REAR AXLE
* Differential gear oil (Front and rear)
Shift on the fly system gear oil
Front axle shaft rubber boot for damage
Axle case for distortion or damage
Axle shafts for distortion or damage-
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ATATAT
STEERING
* Power steering fluid
Oil leakage
* Steering system for looseness or damage
Power steering hose
Steering wheel play
Steering function
Right and left turning radius
Wheel alignment
Joint ball for oil leakage or damage
Joint ball rubber boot for damage
SERVICE BRAKES
Brake fluid
Brake system for fluid leakage
Brake function
* Disc brake pads and discs wear
Brake pedal travel and free play
Pipes and hoses for loose connections or damage
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(1): Adjust or change automatic transmission fluid.
*Marks: Under severe driving conditions, additional maintenance is required.
Refer to “Maintenance schedule under severe driving conditions”.

0BÐ4 MAINTENANCE AND LUBRICATION
DIESEL ENGINE MODELI: Inspect and correct or replace as necessary A: Adjust
R: Replace or change T: Tighten to specified torque L: Lubricate
SERVICE INTERVAL: x 1,000 km
(Use odometer reading x 1,000 miles
or months whichever comes first) or months5
3
610
6
1215
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1820
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2425
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3030
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3635
21
4240
24
4845
27
5450
30
6055
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6660
36
7265
39
7870
42
8475
45
9080
48
9685
51
10290
54
10895
57
114100
60
120
DIESEL ENGINE
* Engine oil
* Engine oil filter
Oil leakage and contamination
Idling speed and acceleration
Fan belt tension and damage
Timing belt
Exhaust system
All hoses and pipes in engine compartment
for clog or damage
Valve clearance
* Air cleaner element
Fuel filter
Radiator coolant concentration
Cooling system for water leakage-
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NOTE: In the 4JXI-TC diesel engine, there is provided sub (2nd) oil filter for fuel injection at the upper part of crank case on the left
side of the engine. This oil filter maintenance-free and does not need a periodic replacement. See reverse side the (back)
cover for installation location of the sub (2nd) oil filter.(Replace every 200,000 km or 125,000 miles)
*Marks: Under severe driving conditions, additional maintenance is required.
Refer to “Maintenance schedule under severe driving conditions”. CLUTCH
Clutch fluid
Clutch pedal travel and free play
TRANSMISSION OR TRANSMISSION WITH
TRANSFER CASE
* Manual transmission with transfer case oil
* Automatic transmission fluid
* Transfer case oil
PROPELLER SHAFT
Loose connections
* Universal joints and splines for wear
Universal joints and sliding sleeve (front and rear)FRONT AND REAR AXLE
* Differential gear oil (Front and rear)
Shift on the fly system gear oil
Front axle shaft rubber boot for damage
Axle case for distortion or damage
Axle shafts for distortion or damage-
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ATAT
STEERING
* Power steering fluid
Oil leakage
* Steering system for looseness or damage
Power steering hose
Steering wheel play
Steering function
Right and left turning radius
Wheel alignment
Joint ball for oil leakage or damage
Joint ball rubber boot for damage
SERVICE BRAKES
Brake fluid
Brake system for fluid leakage
Brake function
* Disc brake pads and discs wear
Brake pedal travel and free play
Pipes and hoses for loose connections or damage
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0BÐ6 MAINTENANCE AND LUBRICATION
Item IntervalCondition
ABCD A+D
Engine oil G : Change every 5,000 km (3,000 miles)
D : Change every 5,000 km (3,000 miles) ll
Engine oil filter G : Replace every 10,000 km (6,000 miles)
D : Replace every 5,000 km (3,000 miles) ll
Air cleaner element G : Replace every 20,000 km (12,000 miles)
D : Replace every 40,000 km (25,000 miles)l
Power steering fluid Replace every 50,000 km (30,000 miles)ll
Steering system for looseness
or damage Inspect every 5,000 km (3,000 miles)l
Universal joints and sleeves Inspect for wear and lubricate every 7,500 km (4,500 miles)ll
Transmission with MT Change every 20,000 km (12,000 miles)
transfer case oil after changing at initial 10,000 km (6,000 miles)l
Transmission :
AT
Change every 32,000 km (20,000 miles) lll l
Transfer:
TF Change every 20,000 km (12,000 miles)
after changing at initial 10,000 km (6,000 miles)l
Differential oil Change every 20,000 km (12,000 miles)
after changing at initial 5,000 km (3,000 miles) l
Disc brake pads and discs Inspect every 5,000 km (3,000 miles)lll
Timing belt G : Replace every 120,000 km (75,000 miles)ll
EXPLANATION OF COMPLETE VEHICLE MAINTENANCE SCHEDULE
Explanations of the services listed in the proceeding
Maintenance Scheduled are presented in ÒService
InformationÓ section of each manual.Replace all questionable parts and note any
necessary repairs as you perform these
maintenance procedures.
MAINTENANCE SCHEDULE UNDER SEVERE DRIVING CONDITIONS
Severe driving conditions
A: Repeated short trips
B: Driving on rough roads
C: Driving on dusty roads
D: Driving in extremely cold weather and/or salted roads

MAINTENANCE AND LUBRICATION 0BÐ7
RECOMMENDED FLUIDS, LUBRICANTS
AND FUELS
In order to obtain maximum performance and longest service life from your ISUZU vehicles, it is very
important to select and use correctly best lubricants and diesel fuels.
When lubricating, be sure to use ISUZU genuine lubricants or recommended lubricants listed below,
according to the maintenance schedule for each vehicle model.
The lubrication intervals in the maintenance schedule and the coverage and period of new vehicle warranty
are based on the use of ISUZU genuine lubricants or recommended lubricants as given in the chart which
will serve as a guide for selecting lubricants of proper brand name.
LUBRICATION MAKE BRAND / TYPEGRADE
API ACEA
ISUZU GENUINE BESCO MULTI Ð Z TYPE CE (10W-30) CE
ISUZU GENUINE BESCO MULTI Ð Z (10W-30) CD
ISUZU GENUINE BESCO MULTI Ð Z SUV (5W-30) CD
ISUZU GENUINE BESCO S Ð 3 (10W, 20W, 30, 40) CD
Diesel engine crankcase EXXON / ESSO ESSOLUBE XD-3+ (15W-40) CG4/CF E2/B2
EXXON / ESSO ESSOLUBE XT331 (15W-40) CG-4/CF E2/B2
MOBIL DELVAC HP (15W-40, 20, 30, 40) CF/CE
CALTEX / CHEVRONDELO CXJ (15W-40, 30, 40) CF
SHELL RIMURA D (15W-40, 30, 40 CD/CF
ELF PERFORMANCE TROPHY (15W-40) CE E3
TOTAL RUBIA XT (15W-40) CF-4 E2
ISUZU GENUINE BESCO RACING ACE (7.5W-30) SG
ISUZU GENUINE BESCO MULTI ACE (7.5W-30) SF
ISUZU GENUINE BESCO ACE (10W-30) SE
EXXON / ESSO ESSO SUPERFLO (15W-40, 15W-50, 20W-50) SJ A2
Gasoline engine EXXON / ESSO ESSO UNIFLO (15W-40, 15W-50, 20W-50) SJ A2
crankcase MOBIL MOBIL SUPER XHP
(15W-40, 15W-50, 20W-50)SJ A3
CALTEX / TEXACOHAVOLINE FORMULA-3 (15W-40, 20W-50) SJ
SHELL HELIX SUPER (10W-30) SJ
ELF SUPER SPORTI S (15W-40) SG
TOTAL QUARTZ 5000 (15W-40, 20W-50) SJ A2
ISUZU GENUINE BESCO GEAR OIL TRANSAXLE (5W-30) SG
EXXON / ESSO ESSOLUBE XD-3+ (15W-40) CG-4/CF E2/B2
EXXON / ESSO ESSOLUBE XT331 (15W-40) CG-4/CF E2/B2
Manual transmission MOBIL MOBIL SUPER (10W-30) SH
Transfer caseCALTEX / TEXACOHAVOLINE FORMULA-3 (15W-40, 20W-50) SH
SHELL RIMURA D (15W-40) CD/CF
ELF SUPER SPORTI S (15W-40) SG/CD
TOTAL QUARTZ 5000 (15W-40, 20W-50) SJ/CF A2/B2
ISUZU GENUINE BESCO GEAR OIL SH (80W-90, 90, 140) GL-5
ISUZU GENUINE BESCO SHIFT ON THE FLY (75W-90) GL-5
DifferentialEXXON / ESSO GEAR OIL GX (85W-90) GL-5
Shift on the fly systemMOBIL MOBILUBE HD (80W-90, 85W-140) GL-5
(GL-5 only)CALTEX THURBAN GL-5 EP (80W-90, 85W-140) GL-5
SHELL SPIRAX HD (90, 140) GL-5
ELF TRANSELF TYPE B (80W-90, 85W-140) GL-5
TOTAL TRANSMISSION TM (80W-90, 85W-140) GL-5
ISUZU GENUINE BESCO GEAR OIL LSD (140) GL-5
EXXON / ESSO GEAR OIL LSA (90) GL-5
Differential MOBIL MOBILUBE HD LS (80W-90) GL-5
(Limited Slip Differential) CALTEX GEAR OIL LSD (90) GL-5
ELF TRANSELF TYPE BLS (90) GL-5
TOTAL TRANSMISSION DA (85W-90) GL-5

MAINTENANCE AND LUBRICATION 0BÐ11
OIL VISCOSITY CHART FOR MANUAL TRANSMISSION AND TRANSFER CASE
APPLY ENGINE OIL
SAE 5W-30
SAE 15W-40,20W-40,20W-50
SAE 10W-30
SAE 40,50
ET-12 (Multi-grade) (Single grade)VISCOSITY GRADE - AMBIENT TEMPERATURE
SAE 30
µ25˚C
µ13˚Fµ10˚C
˚F˚C
˚F ˚C
˚F ˚C
˚F˚C
˚F
OIL VISCOSITY CHART FOR FRONT AXLE (Manual and Auto locking hub model)
AND REAR AXLE
APPLY GEAR OIL
SAE 75W-90
SAE 80W-140
SAE 80W-90
GA-06 (Multi grade)(Single grade)GEAR OIL VISCOSITY GRADE - AMBIENT TEMPERATURE
µ25˚C
µ13˚F˚C
˚F µ10˚C
˚F˚C
˚F ˚C
˚F ˚C
˚F
SAE 80W
SAE 75W
SAE 140
SAE 90

AIR CONDITIONING 1B Ð 5
With some compressors the differential between
the intake pressure and discharge pressure
generated while the compressor is operating is
used for lubrication instead of an oil pump.
The specified amount of the DKV-14D, DKS-15CH
and HD6 compressors oil is 150cc (4.2 Imp fl oz).
Also, compressor oil to be used varies according to
the compressor model. Be sure to avoid mixing
two or more different types of oil.
If the wrong oil is used, lubrication will be poor and
the compressor will seize or malfunction.
The magnetic clutch connector is a waterproof type.
MAGNETIC CLUTCH
The compressor is driven by the drive belt from the
crank pulley of the engine. If the compressor is
activated each time the engine is started, this
causes too much load to the engine. The magnetic
clutch transmits the power from the engine to the
compressor and activates it when the air
conditioning is ÒONÓ. Also, it cuts off the power
from the engine to the compressor when the air
conditioning is ÒOFFÓ. (Magnetic clutch repair
procedure can be found in Section 1D.)
CONDENSER
The condenser assembly in front of the radiator,
which carry the refrigerant and cooling fins to
provide rapid transfer of heat.
Also, it functions to cool and liquefy the high-
pressure and high-temperature vapor sent from the
compressor by the radiator fan or outside air.
A condenser may malfunction in two ways: it may
leak, or it may be restricted. A condenser restriction
will result in excessive compressor discharge
pressure. If a partial restriction is present, the
refrigerant expands after passing through the
restriction.
Thus, ice or frost may from immediately after the
restriction. If air flow through the condenser or
radiator is blocked, high discharge pressures will
result. During normal condenser operation, the
refrigerant outlet line will be slightly cooler than the
inlet line.
The vehicle is equipped with the condenser of the
parallel flow type condenser. A larger thermal
transmission area on the inner surface of the tube
allows the radiant heat to increase and the
ventilation resistance to decrease.
The refrigerant line connection has a bolt at the
block joint, for easy servicing.
RECEIVER/DRIER
The receiver/drier performs four functions;
·As the quantity of refrigerant circulated varies
depending on the refrigeration cycle conditions,
sufficient refrigerant is stored for the refrigera-
tion cycle to operate smoothly in accordance
with fluctuations in the quantity circulated.
·The liquefied refrigerant from the condenser is
mixed with refrigerant gas containing air
bubbles. If refrigerant containing air bubbles is
sent to the expansion valve, the cooling
capacity will decrease considerably. Therefore,
the liquid and air bubbles are separated and
only the liquid is sent to the expansion valve.
·The receiver/drier utilizes a filter and dryer to
remove the dirt and water mixed in the cycling
refrigerant.
·The sight glass, installed atop the receiver/
drier, show the state of the refrigerant.
A receiver/drier may fail due to a restriction inside
the body of the unit. A restriction at the inlet to the
receiver/drier will cause high pressures.
Outlet restrictions will be indicated by low pressure
and little or no cooling. An excessively cold
receiver/ drier outlet may indicate a restriction.
The receiver/drier of this vehicle is made of
aluminum with a smaller tank. It has 300 cc
(8.5 Imp fl oz) refrigerant capacity.
The refrigerant line connection has a bolt at the
block joint, for easy servicing.
DKV-14D TYPE
DKS-15CH TYPE
HD6 TYPE
Magnetic clutch
CompressorSuction side
Discharge side
Compressor Magnetic clutch
852RW031 871RY00012
871RY00011

SUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL & COLUMN 2A – 65
CAUTION:
The wheels of the vehicle must be straight ahead and the
steering column in the "LOCK" position before
disconnecting the steering wheel. Failure to do so will
cause the coil assembly to become uncentered which will
cause damage to the coil assembly.
1. Front Console Assembly
1) Remove the transmission (for M/T) and transfer
control lever knob.
2) Disconnect the wiring harness connectors.
2. Lower Cluster Assembly
3. Steering Lower Cover
Remove the engine hood opening lever.
4. Inflator Module
1) Loosen the inflator module fixing bolt from
behind the steering wheel assembly using a
TORX
driver or equivalent until the inflator
module can be released from steering assembly.
2) Disconnect the yellow 2way SRS connector
located behind the inflator module.
WARNING
THE INFLATOR MODULE SHOULD ALWAYS BE CARRIED
WITH THE URETHANE COVER AWAY FROM YOUR BODY
AND SHOULD ALWAYS BE LAID ON A FLAT SURFACE
WITH THE URETHANE SIDE UP. THIS IS NECESSARY
BECAUSE A FREE SPACE IS PROVIDED TO ALLOW THE
AIR CUSHION TO EXPAND IN THE UNLIKELY EVENT OF A
ACCIDENTAL DEPLOYMENT. OTHERWISE, PERSONAL
INJURY MAY RESULT.
827RS014
827RS015
827RS016
Up

2A – 70 SUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL & COLUMN
REMOVAL
Preparation:
1) Turn the steering wheel so that the vehicle's wheels
are pointing straight ahead.
2) Turn the ignition switch to "LOCK".
3) Disconnect the battery ground cable, and wait at least
5 minutes.
4) Disconnect the yellow 2way SRS connector located
under the steering column.
CAUTION:
The wheels of the vehicle must be straight ahead and the
steering column in the "LOCK" position before
disconnecting the steering wheel.
Failure to do so will cause the SRS coil assembly to
become uncentered which will cause damage to the SRS
coil assembly.
1. Front Console Assembly
Disconnect the transmission (for M/T) and transfer
control lever knob.
Disconnect the wiring harness connectors.
2. Lower Cluster Assembly
3. Steering Lower Cover
Remove the engine hood opening lever.
4. Driver Knee Bolster (Reinforcement)
5. Inflator Module
1) Loosen the inflator module fixing bolt from
behind the steering wheel assembly using a
TORX
driver or equivalent until the inflator
module can be released from steering assembly.
2) Disconnect the yellow 2way SRS connector
located behind the inflator module.
827RS014
827RS015

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±6
High-Low Planetary Gear Set
Establishes an auxiliary transmission mechanism. When
the transfer shift lever is set to the 2H or TOD position, the
reduction gear ratio is 1.000 and the corresponding
driving force is generated. When the transfer shift lever is
set to the 4L position, the reduction gear ratio is 2.480 and
the corresponding driving force is generated.
262RW030
4H and 4L Switches
Detects the shift position of the transfer from the
movement of the transfer lever and outputs signals to the
TOD control unit.
261RW002
Transfer Connector
Transmits the input and output signals of the speed
sensors, electromagnetic coil, and 4H and 4L switches to
the vehicle harness. A waterproof 12-pin type is used.
261RW046
TOD Indicator Lamps (on the instrument
panel)
Inform the following items.

Bulb check

Drive mode

ABS IN status

BRAKE ON status
821RW049