Page 46 of 3115
AC1IM-03
I06808
I06811
AC-62
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
2787 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. RUN ENGINE AT IDLE SPEED WITH A/C ON FOR
APPROX. 10 MINUTES
2. STOP ENGINE
3. DISCONNECT NEGATIVE (- ) TERMINAL CABLE
FROM BATTERY
4. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
5. REMOVE ENGINE UNDER COVER
6. REMOVE DRIVE BELT (See page AC-16)
7. DISCONNECT DISCHARGE AND SUCTION HOSES
Remove the 2 bolts and disconnect the both hoses.
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
8. REMOVE FRONT DRIVE SHAFT LH
(See page SA-26)
9. REMOVE COMPRESSOR
(a) Disconnect the connector.
(b) Remove the 3 bolts and the compressor.
Page 47 of 3115
AC1IR-04
I24822
Radiator Grill
Engine Under Cover Condenser
Liquid Tube
O-Ring Upper Bracket
N´m (kgf´cm, ft´lbf): Specified torque
Non-reusable partLower Bracket
Center Bracket Discharge Hose
O-Ring
Engine Under Cover
10 (100, 7)
10 (100, 7)
22 (225, 16)
O-Ring
Discharge Hose
Center Bracket
Lower Bracket
A/T Oil Cooler
- AIR CONDITIONINGCONDENSER
AC-69
2794 Author: Date:
2004 LAND CRUISER (RM1071U)
COMPONENTS
Page 50 of 3115
AC1IS-04
I24817
I24818
AC-70
- AIR CONDITIONINGCONDENSER
2795 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, refer to the following items evacuate
air from the refrigeration system and charge system with the re-
frigerant and inspect for leaks of the refrigerant.
Specified amount: 1,050 ± 50 g (37.03 ± 1.76 oz.)
2. REMOVE RADIATOR GRILL
3. REMOVE A/T AIR COOLED OIL COOLER
(See page AT-17)
4. REMOVE ENGINE UNDER COVER
5. REMOVE DISCHARGE TUBE
(a) Remove the bolt and disconnect the tube from the con-
denser.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(b) Loosen the nut and remove the tube.
Torque: 22 N´m (225 kgf´cm, 16 ft´lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation, lubricate 2 new O-rings with com-
pressor oil and install them on the tube.
6. DISCONNECT LIQUID TUBE
Remove the bolt and disconnect the tube.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation, lubricate a new O-ring with compres-
sor oil and install them on the tube.
Page 74 of 3115
AC1KI-04
I06727
I25894
Second Ridge
View A
UpperHose Clip
Lower
MarkingRHLH Upper
LowerMarking
View A
I06728
I06729
AC-40
- AIR CONDITIONINGFRONT HEATER UNIT
2765 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all coolant.
2. DISCONNECT WATER HOSES FROM HEATER RA-
DIATOR PIPES
(a) Using pliers, grip the claws of the hose clip and slide the
clip along the hose.
(b) Disconnect the water hoses from the heater radiator
pipes.
HINT:
At the time of installation , please refer to the following items.
Push the water hose onto the heater radiator pipe to the
second ridge on the pipe.
Install a hose clip in the position as shown in the illustra-
tion.
3. REMOVE INSTRUMENT PANEL AND REINFORCE-
MENT (See page BO-84)
4. REMOVE FRONT COOLING UNIT (See page AC-24)
5. REMOVE HEATER UNIT
(a) Remove the lower defroster nozzle.
(b) Disconnect the connector.
(c) Remove the 4 nuts and heater unit.
Page 76 of 3115
I25040
Relay BlockJunction Block
(Built-in Relay)AC1LY-03
I25183
Engine Room J/B
63
65
57 AC-96
- AIR CONDITIONINGMAGNETIC CLUTCH RELAY
2821 Author: Date:
2004 LAND CRUISER (RM1071U)
MAGNETIC CLUTCH RELAY
INSPECTION
HINT:
The magnetic clutch relay is built in the engine room junction
block. Since the relay is constructed with a relay block that is in
the junction block as a unit, it is impossible to disconnect the
wire harness connecting with the relay block.
If the relay has a malfunction, replace it with the junction block
assembly wire harness together.
1. REMOVE ENGINE ROOM J/B
2. INSPECT MAGNETIC CLUTCH RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant57 - 65Continuity
Apply B+ between
terminals 57 and 65.63 - 65Continuity
If continuity is not as specified, replace the engine room J/B.
3. INSTALL ENGINE ROOM J/B
Page 84 of 3115
AC3OW-01
I25168
1
23
4
Z13470
Magnetic clutch control
Low Pressure Side
ON (Continuity)
196 kpa
(2.0 kgf/cm
2, 28 psi)
OFF (No Continuity)High Pressure Side
3,140 kpa
(32.0 kgf/cm2, 455 psi)
OFF (No Continuity)
- AIR CONDITIONINGPRESSURE SWITCH
AC-91
2816 Author: Date:
2004 LAND CRUISER (RM1071U)
PRESSURE SWITCH
ON-VEHICLE INSPECTION
1. SET VEHICLE IN THESE CONDITION
(a) Engine speed at 1,500 rpm
(b) Blower speed control switch at ºHIº position
(c) Temperature control dial at ºMAX. COOLº position
(d) Manifold gauge set setting
2. INSPECT PRESSURE SWITCH OPERATION
(a) Disconnect the connector.
(b) Inspect pressure switch continuity (Magnetic Clutch Con-
trol)
(1) Connect the positive (+) lead from the ohmmeter to
terminal 1 and the negative (-) lead to terminal 2.
(2) Check continuity between terminals when the re-
frigerant pressure is changed, as shown in the il-
lustration.
If continuity is not as specified, replace the pressure switch.
Page 94 of 3115
AC1KA-04
I06684
43
W
I06685
1 2
I06686
- AIR CONDITIONINGREAR COOLING UNIT
AC-29
2754 Author: Date:
2004 LAND CRUISER (RM1071U)
REAR COOLING UNIT
ON-VEHICLE INSPECTION
1. INSPECT EXPANSION VALVE
(a) Check amount of gas during refrigeration cycle.
(b) Set on manifold gauge set.
(c) Start the engine.
(d) Operate the A/C system.
(e) Inspect the expansion valve.
(1) Run the engine at 1,500 rpm for at least 5 minutes.
(2) Check the high pressure reading is 1.37 - 1.57 MPa
(14 - 16 kgf/cm
2, 199 - 288 psi).
(3) Check the low pressure reading.
If the low pressure reading is 0 kPa (0 kgf/cm
2, 0psi), replace
the expansion valve.
2. REMOVE REAR DOOR SCUFF PLATE RH
3. REMOVE REAR FLOOR MAT SUPPORT PLATE
4. REMOVE QUARTER TRIM PANEL RH
5. INSPECT THERMISTOR RESISTANCE
(a) Disconnect the connector.
(b) Measure resistance between terminal 3 and 4.
Standard resistance: Approx. 1.5 kW at 25 °C (77 °F)
If resistance is not as specified, proceed ºINSPECTIONº on
page AC-36.
6. INSPECT MAGNETIC VALVE CONTINUITY
(a) Disconnect the connector.
(b) Check the continuity exists between terminal 1 and 2.
If resistance is not as specified, proceed ºINSPECTIONº on
page AC-36.
7. CHECK FOR LEAKAGE OF REFRIGERANT
(a) Remove the power transistor.
(b) Using a gas leak detector, check for leaks of refrigerant.
If there is a leakage, check the evaporator or tightening torque
at the joints.
Page 101 of 3115
I25040
Relay BlockJunction Block
(Built-in Relay)
AC3OY-01
I25183
Engine Room J/B
31 29 3 2
- AIR CONDITIONINGREAR HEATER RELAY
AC-95
2820 Author: Date:
2004 LAND CRUISER (RM1071U)
REAR HEATER RELAY
INSPECTION
HINT:
The rear heater relay is built in the engine room junction block.
Since the relay is constructed with a relay block that is in the
junction block as a unit, it is impossible to disconnect the wire
harness connecting with the relay block.
If the relay has a malfunction, replace it with the junction block
assembly wire harness together.
1. REMOVE ENGINE ROOM J/B
2. INSPECT REAR HEATER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant29 - 31Continuity
Apply B+ between
terminals 29 and 31.2 - 3Continuity
If continuity is not as specified, replace the engine room J/B.
3. INSTALL ENGINE ROOM J/B
