1996 TOYOTA LAND CRUISER Position

IN−40
−
INTRODUCTION TERMS
1996 LAND CRUISER (RM451U)
TCM
Transmission Control ModuleTransmission ECU, ECT ECU
TPThrottle PositionThrottle Position
TRTransmission Range−
TVVThermal Vacuum V
alveBimetallic Vacuum Switching Valve (BVSV)
Thermostatic Vacuum Switching Valve (TVSV)
TWCThree−Way Catalytic Converter
Three−Way Catalytic (TWC)
Manifold Converter
CC
RO
TWC+OCThree−Way + Oxidation Catalytic ConverterCCR + CCo
VA FVolume Air FlowAir Flow Meter
VRVoltage RegulatorVoltage Regulator
VSSVehicle Speed SensorVehicle Speed Sensor
WOTWide Open ThrottleFull Throttle
WU−OCWarm Up Oxidation Catalytic Converter−
WU−TWCWarm Up Three−Way Catalytic Converter−
3GRThird Gear−
4GRFourth Gear−
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AC−4
−
AIR CONDITIONING AIR CONDITIONING SYSTEM
1996 LAND CRUISER (RM451U)
Insuf
ficient cooling
1. Refrigerant volume
2. Drive belt
3. Magnetic clutch
4. Compressor
5. Condenser
6. Receiver
7. Expansion valve
8. Evaporator
9. Refrigerant line
10.Pressure switch
11. A/C amplifier
12.A/C control assemblyAC−5
AC−15
AC−33
AC−33
AC−42
AC−39
AC−47
AC−45
AC−20
AC−61
AC−74
AC−69
No engine idle up when A/C switch ON
1. A/C amplifier
2. ECM
3. Wire harnessAC−74 −
−
No warm air comes out
1. Engine coolant volume
2. A/C control assembly
3. Water valve
4. Heater radiator−
AC−69
AC−49
AC−46
A/C indicator does not light up when mode lever at DEF. position
1. Defroster mode switch
2. A/C switch
3. Wire harnessAC−69
AC−69 −
Rear heater:
SymptomSuspect AreaSee page
No blower operation
1. RR HTR Fuse
2. Rear heater relay
3. Rear heater switch
4. Rear blower motor
5. Rear blower resistor−
AC−65
AC−77
AC−55
AC−58
No warm air come out1. Engine coolant volume
2. Rear heater radiator−
AC−46
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AC2QB−01
Z04523
AC−14
−
AIR CONDITIONING AIR CONDITIONING SYSTEM
1996 LAND CRUISER (RM451U)
POSITIONING
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AC2QS−01
Z17942
Hose ”A”Hose ”B”
Z17943
Hose Clip
Heater
Radiator Pope Paint Mark
Water Hose Hose ”A”Upper
FR
RH Hose ”B”
RH
FR
Marking 45 ± 10° 45
°
10 °
N06494
AC−28
−
AIR CONDITIONING HEATER UNIT
1355
Author: Date:
1996 LAND CRUISER (RM451U)
HEATER UNIT
REMOVAL
1. REMOVE COOLING UNIT (See page AC−24)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
3. DISCONNECT WATER HOSES FROM HEATER RA- DIATOR PIPES
(a) Grip the claws of the hose clip with pliers and slide the clip
along the hose to a place where it does not clamp the
hose to the pipe.
(b) Disconnect the water hoses.
HINT:
Push the water hose onto the heater radiator pipe as far
as the ridge on the pipe.
Install the hose clip in a position, as shown in the illustra-
tion.
4. REMOVE PIPE GROMMETS
5. REMOVE INSTRUMENT PANEL SAFETY PAD (See page BO−76 )
6. REMOVE INSTRUMENT PANEL REINFORCEMENT
(See page BO−76 )
7. REMOVE HEATER UNIT
(a) Remove the 3 screws and defroster nozzle.(...~---------I I
I II II I
I II IIIv-
N02485
N18179N18181
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AC2RU−01
Z17944
Hose ”A”
Hose ”B”
Z19353
Hose Clip
Heater
Radiator
Pipe Paint
Water Hose Upper Upper
Fr RH
Marking Hose ”A”
Hose ”B”
45°
AC−48
−
AIR CONDITIONING WATER VALVE
1375
Author: Date:
1996 LAND CRUISER (RM451U)
WATER VALVE
REMOVAL
1. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
2. DISCONNECT WATER VALVE CONTROL CABLE
3. DISCONNECT WATER HOSES FROM HEATER RA-
DIATOR PIPE AND WATER VALVE
(a) Grip the claws of the hose clip with pliers and slide the clip
along the hose to a place where it does not clamp the
hose to the pipe.
(b) Disconnect the water hoses.
HINT:
ATt the time of installation, refer to the following procedure.
Push the water hose onto the heater radiator pipe as far
as ridge on the pipe.
Install the hose clip in a position, as shown in the illustra-
tion.
4. REMOVE WIRE HARNESS PROTECTOR
5. REMOVE WATER VALVE
Remove the 2 bolts and water valve.
N02485N18180N18181
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AC2RW−01
N14296
−
AIR CONDITIONING WATER VALVE
AC−49
1996 LAND CRUISER (RM451U)
ADJUSTMENT
ADJUST WATER VALVE CONTROL CABLE
(a) Set the vehicle in these conditions.
Ignition switch on.
Blower speed control switch on.
Temperature control switch to ”COOL” position.
(b) Set the water valve to ”COOL” position, install the control
cable and lock the clamp.
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Z09805
Connector ”A”Connector ”B”
−
AIR CONDITIONING AIR CONDITIONING CONTROL ASSEMBLY
AC−71
1996 LAND CRUISER (RM451U)
5. A/C or DEF Switch:
INSPECT INDICATOR LIGHT OPERATION
(a) Connect the positive (+) lead from the battery to terminal
A−9 and the negative ( −) lead to terminal B−18.
(b) Push the A/C or DEF switch button in and check that the indicator light lights up.
(c) Then, connect the positive (+) lead from the battery to ter-
minal A−13 and check that the indicator dims.
If operation is not as specified, replace the A/C control assem-
bly.
6. INSPECT AIR INLET CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
FRESHA8 − A19Continuity
RECIRCA8 − A18Continuity
If continuity is not as specified, replace the A/C control assem-
bly.
7. INSPECT MODE CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
FACEA14 − B16Continuity
BI−LEVELA12 − B16Continuity
FOOTA7 − B16Continuity
FOOT −DEFB11 − B16Continuity
DEFB4 − B16Continuity
If continuity is not as specified, replace the A/C control assem-
bly.
8. INSPECT BLOWER SPEED CONTROL SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFFA10 − B16Continuity
LOA1 − B16Continuity
M1B9 − B16Continuity
M2B10 − B16Continuity
HIB13 − B16Continuity
Connector"A"
Connector"B"
Connector"A"
Connector"A"
...-~~IIB1~t•7 ,3 2I
20Itl'17"lIB,,113121110
e-20-2-C
In,•71'fIl';;l1oT~312I1\
[20It..117,,110141131211110II
0-20-2-<:.-18-2-B
AC2726
AC2727
219129
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Z04536
AC2SO−04
Z15447
−
AIR CONDITIONING REAR HEATER SWITCH
AC−77
1404
Author: Date:
1996 LAND CRUISER (RM451U)
REAR HEATER SWITCH
INSPECTION
1. REMOVE INSTRUMENT CLUSTER FINISH CENTER
PANEL WITH A/C CONTROL ASSEMBLY
2. REMOVE REAR HEATER SWITCH
3. INSPECT INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
5 and the negative ( −) lead to terminal 1.
(b) Push each of the rear heater switch knob in and check
that their indicators lights up.
If operation is not as specified, replace the switch.
4. INSPECT SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
HI1 − 4Continuity
OFF−No Continuity
LO1 − 2Continuity
Illumination circuit3 − 6Continuity
If continuity is not as specified, replace the switch.
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