diff TOYOTA LAND CRUISER 1996 J80 User Guide

AC2RR−01
−
AIR CONDITIONING EXPANSION VALVE
AC−47
1374
Author: Date:
1996 LAND CRUISER (RM451U)
EXPANSION VALVE
ON−VEHICLE INSPECTION
1. CHECK QUANTITY OF GAS DURING REFRIGERATION CYCLE
2. INSTALL MANIFOLD GAUGE SET
3. RUN ENGINE
(a) Run the engine at 1,500 rpm for at least 5 minutes.
(b) Then check that the high pressure reading is 1.37 − 1.57 MPa (14 − 16 kgf/cm
2, 199 − 228 psi).
4. CHECK EXPANSION VALVE
If the expansion valve is faulty, the low pressure reading will drop to 0 kPa (0 kgf/cm
2, 0 psi).
HINT:
When the low pressure drops to 0 kPa (0 kgf/cm
2, 0 psi), feel the receiver’s IN and OUT sides for zero temper-
ature difference.
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AT−22
−
AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION UNIT
1996 LAND CRUISER (RM451U)
(i) Remove the 4 bolts and transfer shift lever.
Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
(j) Remove the 2 cushions.
6. DISCONNECT THESE CONNECTORS:
No.1 vehicle speed sensor
No.2 vehicle speed sensor
Park/neutral position switch
Solenoid connector
ATF temperature sensor
Center differential lock indicator switch
L4 position switch
Neutral position switch
7. DISCONNECT BLEEDER HOSE FROM TRANSFER
8. REMOVE FRONT AND REAR PROPELLER SHAFT (See page PR−3 )
9. REMOVE OIL FILLER PIPE
(a) Remove the level gauge.
(b) Remove the upper side mounting bolt.
(c) Remove the bolt and filler pipe.
HINT:
At the time of installation, replace the used O −ring with a new
one.
10. LOOSEN 2 OIL COOLER PIPE UNION NUTS
Torque: 34 N·m (350 kgf·cm, 25 ft·lbf)
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Z06300
BrightDark 2
3
Extinguished
1
−
BODY ELECTRICAL COMBINATION METER
BE−41
1996 LAND CRUISER (RM451U)
25. INSPECT ENGINE OIL LEVEL WARNING CIRCUIT
Disconnect the switch connector and inspect the connector on
wire harness side, as shown.
Tester connectionConditionSpecified condition
2 − GroundConstantContinuity
If continuity is not as specified, inspect the wire harness or
ground point.
26. INSPECT ENGINE OIL LEVEL WARNING LIGHT
(a) Disconnect the connector from the switch.
(b) Ground terminal 1 on the wire harness connector.
(c) Turn the ignition switch ON, and check that the warning
light lights up approximately 40 seconds later.
If the warning light does not light up, inspect bulb or wire har-
ness.
27. INSPECT LIGHT CONTROL RHEOSTAT
(a) Connect terminals 1 and 3 through a 3.4 W test bulb.
(b) Connect the positive (+) lead from the battery to terminal
1 and the negative ( −) lead to terminal 2.
(c) Turn the rheostat knob to fully counterclockwise, and
check that the test bulb goes out.
(d) Gradually turn the rheostat knob to clockwise, and check
that the test bulb brightness changes from dark to bright.
If operation is not as specified, replace the rheostat.
HINT:
Adjust the brightness of illumination lights by rheostat.
A/C Control Assembly
Antenna Switch
Ash Receptacle
Audio
Center Diff. Lock Switch
Cigarette Lighter
Defogger Switch
Hazard Warning Switch
Shift Lever
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BO5152
BO391−01
BO−68
−
BODY SLIDING ROOF
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT SLIDING ROOF GLASS ALIGNMENT
(a) Start the engine and check the operation time of the slid-
ing roof.
Operation time: Approx. 5 sec.
(b) Check for abnormal noise or binding during operation.
(c) With the sliding roof fully closed, check for water leakage.
(d) Check for a difference in level between the sliding roof weatherstrip and roof panel.
Front End0.9 − 3.9 mm (0.035 − 0.154 in.)
Rear End0.9 − 3.9 mm (0.035 − 0.154 in.)
2. If the sliding roof does not operate:
ADJUST SLIDING ROOF GLASS ALIGNMENT
(a) Remove the control switch cover.
(b) Remove the large screw inside.
NOTICE:
Be careful not to lose the spring washer or shim.
(c) Manually operate the moon roof by inserting a special
crank−shaped screwdriver into the hole and turning the
drive shaft.
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BO4033
BO392−01
−
BODY SLIDING ROOF
BO−69
1996 LAND CRUISER (RM451U)
ADJUSTMENT
1. REMOVE SLIDING ROOF GARNISHES
Before making adjustments, remove the left and right sliding
roof garnishes.
HINT:
After adjustment, reinstall the sliding roof garnishes.
2. ADJUST LEVEL DIFFERENCE
Adjust by increasing or decreasing the number of shims be-
tween the bracket and sliding roof.
3. ADJUST FORWARD OR REARWARD
(a) Adjust by loosening the sliding roof installation nuts, and
move the sliding roof bracket forwards and backwards.
(b) When the front or rear alignment is not correct, remove the glass and adjust the drive rail.
(c) Using a screwdriver, slide the link forwards or backwards to align the 2 marks, as shown in the illustration.
(d) Slide the bracket to the forefront with your hand.
4. ADJUST RIGHT OR LEFT
Adjust by loosening the sliding roof rear shoe installation nuts,
and move the sliding roof to the right and left.
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BR1CS−04
BR−22
−
BRAKE FRONT BRAKE PAD
1996 LAND CRUISER (RM451U)
REPLACEMENT
1. REMOVE FRONT WHEEL
2. INSPECT PAD LINING THICKNESS
Check the pad thickness and replace pads if not within the
specification. Minimum thickness: 1.0 mm (0.039 in.)
3. REMOVE THESE PARTS:
Clip
2 pins
Anti−rattle spring
2 pads
4 anti−squeal shims
NOTICE:
The anti −rattle spring and clip can be used again provided
that they have sufficient rebound, no deformation, cracks
or wear, and have had all rust, dirt and foreign particles
cleaned off.
4. CHECK DISC THICKNESS AND RUNOUT (See page
BR−27 )
5. INSTALL NEW PADS
NOTICE:
When replacing worn pads, the anti −squeal shims must be
replaced together with the pads.
(a) Draw out a small amount of brake fluid from the reservoir.
(b) Press in the pistons with a hammer handle or an equiva- lent.
HINT:
Always change the pad on one wheel at a time as there
is a possibility of the opposite piston flying out.
If the piston is difficult to push in, loosen the bleeder plug
and push in the piston while letting some brake fluid es-
cape.
(c) Install the 2 anti−squeal shims to new pads.
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BR1NS−01
BR−58
−
BRAKE ABS ACTUATOR
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT CONTINUITY OF MOTOR RELAY CIRCUIT
(a) Check there is continuity between terminals 9 and 10.
(b) Check there is no continuity between terminals 7 and 8.
If continuity is not as specified, replace the relay.
2. INSPECT OPERATION OF MOTOR RELAY CIRCUIT
(a) Connect the positive (+) lead from the battery to terminal 10 and negative ( −) lead to terminal 9.
(b) Check there is continuity between terminals 7 and 8.
If operation is not as specified, replace the relay.
3. INSPECT CONTINUITY OD SOLENOID RELAY CIR- CUIT
(a) Check there is continuity between terminals 1 and 9.
(b) Check there is no continuity between terminals 2 and 5.
(c) Connect the positive lead from the ohmmeter to terminal 5 and connect negative lead to terminal 4.
(d) Check there is continuity between terminals.
(e) Connect the 2 leads in reverse, and check that there is no
continuity between terminals.
If continuity is not as specified, replace the relay.
HINT:
For the different type ohmmeter, there is no continuity for step
(d), and there is continuity for step (e).
4. INSPECT OPERATION OF SOLENOID RELAY CIR- CUIT
(a) Connect the positive (+) lead from the battery to terminal
1 and negative ( −) lead to terminal 9.
(b) Check there is continuity between terminal 2 and 6.
(c) Check there is no continuity between terminals 2 and 6.
If operation is not as specified, replace the relay.
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DI5OT−01
ENGINE CONTROL SYSTEM Check Sheet
Customer’s Name
Driver’s Name
Data Vehicle
Brought in
License No.
Model and Model
Year
Frame No.
Engine Model
Odometer Reading
km
miles
Problem Symptoms
Engine does
not Start
Difficult to
Start
Poor Idling
Poor
Driveability
Engine Stall
Others
Engine does not crankNo initial combustionNo complete combustion
Engine cranks slowly
Other
Incorrect first idleIdling rpm is abnormalHigh ( rpm)Low ( rpm)
Rough idling
Other
HesitationBack fireMuffler explosion (after− fire)Surging
Knocking
Other
Soon after startingAfter accelerator pedal depressed
After accelerator pedal released
During A/C operation
Shifting from N to D
Other
Datas Problem
Occurred
Problem Frequency
Condition When
Problem Occurs
Weather
Engine Operation
Engine T emp.
Place Outdoor
Temperature Constant
Sometimes ( times per day/month)Once only
Other
Fine
CloudyRainySnowyVarious/Other
Hot
Warm CoolCold (approx. °F/ °C)
Highway
SuburbsInner CityUphillDownhill
Rough road
Other
Cold
Warming upAfter Warming upAny temp.Other
Starting
Just after starting ( min.)IdlingRacing
Driving
Constant speedAccelerationDeceleration
A/C switch ON/OFF
Other
Condition of MILRemains on Sometimes light up Does not light up
NormalMalfunction code(s) (code )
Freezed frame data ( )
NormalMalfunction code(s) (code )
Freezed frame data ( )
Normal mode
(Precheck)
Check Mode
DTC Inspection Inspector’s
Name
DI−2
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
CUSTOMER PROBLEM ANALYSIS CHECK
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DI5OY−03
−
DIAGNOSTICS ENGINE
DI−19
1996 LAND CRUISER (RM451U)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the DTC check and the problem \
still can not be confirmed
in the basic inspection, then proceed to this step and perform troubleshooting according to the numbered
order given in the table below.
SymptomSuspect AreaSee page
Engine does not crank (Does not start)1. Starting systemST−16
No initial combustion (Does not start)1. ECM power source circuit
2. Fuel pump control circuitDI−11 0
DI−11 5
No complete combustion (Does not start)1. Fuel pump control circuitDI−11 5
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. Fuel pump control circuit
3. CompressionDI−103
DI−11 5 EM−3
Cold engine (Difficult to start)1. Starter signal circuit
2. Fuel pump control circuitDI−103DI−11 5
Hot engine (Difficult to start)
1. Starter signal circuit
2. Fuel pressure control circuit
3. Fuel pump control circuitDI−103
DI−125DI−11 5
High engine idle speed (Poor idling)1. A/C signal circuit
2. ECM power source circuitAC−5
DI−11 0
Low engine idle speed (Poor idling)1. A/C signal circuit
2. Fuel pump control circuitAC−5
DI−11 5
Rough idling (Poor idling)1. Compression
2. Fuel pump control circuitEM−3
DI−11 5
Hunting (Poor idling)1. ECM power source circuit
2. Fuel pump control circuitDI−11 0
DI−11 5
Hesitation/Poor acceleration (Poor driveability)1. Fuel pump control circuit
2. A/T faultyDI−11 5
DI−147
Surging (Poor driveability)1. Fuel pump control circuitDI−11 5
Soon after starting (Engine stall)1. Fuel pump control circuitDI−11 5
During A/C operation (Engine stall)1. A/C signal circuit
2. Engine control module (ECM)AC−5
IN−18
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−
DIAGNOSTICS ENGINE
DI−51
1996 LAND CRUISER (RM451U)
DTC P0171 System too Lean (Fuel Trim)
DTC P0172 System too Rich (Fuel Trim)
CIRCUIT DESCRIPTION
”Fuel trim” refers to the feedback compensation value compared against the basic injection time. Fuel trim
includes short−term fuel trim and long −term fuel trim.
”Short−term fuel trim” is the short−term fuel compensation used to maintain the air −fuel ratio at its ideal
theoretical value. The signal from the heated oxygen sensor indicates whether the a\
ir −fuel ratio is RICH or
LEAN compared to the ideal theoretical value, triggering a reduction in fuel \
volume if the air −fuel ratio is rich,
and an increase in fuel volume if it is lean.
”Long −term fuel trim” is overall fuel compensation carried out long −term to compensate for continual devi-
ation of the short−term fuel trim form the central value due to individual engine differences, wear over time
and changes in the usage environment.
If both the short−term fuel trim and long−term fuel trim are LEAN or RICH beyond a certain value, it is de-
tected as a malfunction and the MIL lights up.
DTC No.DTC Detecting ConditionTrouble Area
P0171
When the air fuel ratio feedback is stable after engine warming
up, the fuel trim is considerably in error on the RICH side.
(2 trip detection logic)
 Air intake (hose loose)
 Fuel line pressure
 Injector blockage, leak
 Heated oxygen sensor (bank 1 sensor 1) malfunction
 Mass air flow meter
 Engine coolant temp. sensor
P0172
When the air fuel ratio feedback is stable after engine warming
up, the fuel trim is considerably in error on the LEAN side.
(2 trip detection logic)
Fuel line pressure
 Injector blockage, leak
 Heated oxygen sensor (bank 1 sensor 1) malfunction
 Mass air flow meter
 Engine coolant temp. sensor
HINT:
When the DTC P0171 is recorded, the actual air− fuel ratio is on the LEAN side. When DTC P0172 is
recorded, the actual air−fuel ratio is on the RICH side.
If the total of the short −term fuel trim value and long −term fuel trim value is within + 30 − − 35 %, the
system is functioning normally.
If the vehicle runs out of fuel, the air −fuel ratio is LEAN and DTC P0171 is recorded. The MIL then come
on.
INSPECTION PROCEDURE
1 Check air induction system (See page SF−1 ).
NG Repair or replace
OK
DI5PE−02
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