1998 TOYOTA LAND CRUISER sensor

AC1HO-05
I24786
Pressure Switch Compressor and Magnetic Clutch
Ambient Temperature Sensor
CondenserNo.1 Junction Block
 HTR Relay
 RR HTR Relay
 MG CLT Relay
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC-13
2738 Author
: Date
:
2004 LAND CRUISER (RM1071U)
LOCATION

I24787
Front Heater Unit
 Heater Radiator
 Air Mix Servomotor
 Air Outlet Servomotor Solar Sensor
Front Cooling Unit
 Expansion Valve
 Evaporator
 Evaporator Temperature Sensor Rear Heater Unit
 Blower Motor
 Power Transistor
 Heater Radiator
 Air Mix Servomotor
 Air Inlet Temperature Sensor
Room Temperature Sensor
(for Rear A/C)
Rear Cooling Unit
 Blower Motor
 Power Transister
 Evaporator
 Thermistor
 Expansion Valve with Magnetic Valve
Blower Unit
 Blower Motor
 Blower Motor Control Rela
y
 Air Inlet ServomotorA/C Amplifier
Integration Control Panel Room Temperature Sensor
(for Front A/C)
Rear A/C Control Switchw/ EMV:
w/o EMV:
A/C Control
A/C Amplifier
Cowl Side J/B LH

ACC Fuse
Cowl Side J/B RH

RR A/C AC-14
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
2739 Author
: Date
:
2004 LAND CRUISER (RM1071U)

- AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC-9
2734 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3. INSPECT IDLE-UP SPEED
(a) Warm up engine
(b) Inspect idle-up speed when following conditions are es-
tablished.
Test conditions:

Fan speed selector at ºHIº position

Temperature control dial at ºCOOLº position

A/C switch ON

Put gear shift in neutral
Magnetic clutch conditionIdle-up speed
Magnetic clutch not engaged700 ± 50 rpm
Magnetic clutch engaged780 ± 50 rpm
If idle speed is not as specified, check the idle control system.
4. INSPECT FOR LEAKAGE OF REFRIGERANT
(a) Stop engine.
(b) Secure good ventilation (The gas leak detector may not
react to volatile gases which are not refrigerant, such as
evaporated gasoline and exhaust gas)
(c) Repeat the test 2 or 3 times
(d) Make sure that there is some refrigerant remaining in the
refrigeration system.
When compressor is OFF: approx. 392 - 588 kPa (4 - 6
kgf´cm
2, 57 - 85 psi)
(e) Bring the gas leak detector close to the drain hose before
performing the test.
HINT:

After the blower motor stops, leave the cooling for more
than 15 minutes.

Expose the gas leak detector sensor under the drain
hose.

When bring the gas leak detector close to the drain hose,
make sure that the gas leak detector does not react to the
volatile gases.
If gas leaks are detected, lift up the vehicle.
(f) If gas leaks are not detected on the drain hose, remove
the blower resistor from the cooling unit. Then insert the
gas leak detector sensor into the unit to perform the test.
(g) Disconnect the connector and leave the pressure switch
for approx. 20 minutes. Then bring the gas leak detector
close to the pressure switch to perform the test.
(h) Bring the gas leak detector close to the refrigerant lines.

AC1LQ-04
I08494
AC-90
- AIR CONDITIONINGAIR INLET TEMPERATURE SENSOR
2815 Author
: Date
:
2004 LAND CRUISER (RM1071U)
AIR INLET TEMPERATURE
SENSOR
INSPECTION
1. REMOVE FRONT SEATS
2. REMOVE REAR CONSOLE BOX
3. REMOVE FRONT CONSOLE BOX COVER
4. REMOVE LOWER CENTER CLUSTER FINISH PANEL
5. REMOVE FRONT DOOR SCUFF PLATES
6. REMOVE COWL SIDE TRIMS
7. REMOVE REAR DOOR SCUFF PATES
8. REMOVE CENTER PILLAR GARNISHES
9. REMOVE AIR INLET TEMPERATURE SENSOR
(a) Slide the floor carpet backward.
(b) Disconnect the connector.
(c) Remove the screw and the air inlet temperature sensor.
10. INSPECT AIR INLET TEMPERATURE SENSOR CIR-
CUIT (See page DI-1342)
11. INSTALL AIR INLET TEMPERATURE SENSOR
(a) Install the air inlet temperature sensor with the screw.
(b) Connect the connector.
(c) Install the floor carpet.
12. INSTALL CENTER PILLAR GARNISHES
13. INSTALL REAR DOOR SCUFF PLATES
14. INSTALL COWL SIDE TRIMS
15. INSTALL FRONT DOOR SCUFF PLATES
16. INSTALL REAR CONSOLE BOX
17. INSTALL FRONT SEATS

I06741
AC1LK-06
AC-84
- AIR CONDITIONINGAIR MIX SERVOMOTOR (for Front A/C)
2809 Author
: Date
:
2004 LAND CRUISER (RM1071U)
AIR MIX SERVOMOTOR (for Front
A/C)
INSPECTION
1. REMOVE AIR MIX SERVOMOTOR
(a) Disconnect the connector.
(b) Remove the 2 screws and the air mix servomotor.
2. INSPECT AIR MIX SERVOMOTOR OPERATION
(See page DI-1354)
3. INSPECT AIR MIX DAMPER POSITION SENSOR
(See page DI-1345)
4. INSTALL SERVOMOTOR
(a) Install the servomotor with the 3 screws.
(b) Connect the connector.

I06756
AC1LP-05
- AIR CONDITIONINGAMBIENT TEMPERATURE SENSOR
AC-89
2814 Author
: Date
:
2004 LAND CRUISER (RM1071U)
AMBIENT TEMPERATURE
SENSOR
INSPECTION
1. REMOVE AMBIENT TEMPERATURE SENSOR
(a) Disconnect the connector.
(b) Remove the bolt and the ambient temperature sensor.
2. INSPECT AMBIENT TEMPERATURE SENSOR CIR-
CUIT (See page DI-1319)
3. INSTALL AMBIENT TEMPERATURE SENSOR
(a) Install the ambient temperature sensor to the condenser
upper bracket.
(b) Connect the connector.

AC1KW-05
- AIR CONDITIONINGBLOWER UNIT
AC-57
2782 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT AIR INLET SERVOMOTOR OPERATION (See page DI-1357)
2. INSPECT AIR INLET DAMPER POSITION SENSOR CIRCUIT (See page DI-1348)

AC1IK-03
I068122
1
I06813
3
AC-60
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
2785 Author
: Date
:
2004 LAND CRUISER (RM1071U)
COMPRESSOR AND MAGNETIC
CLUTCH
ON-VEHICLE INSPECTION
1. INSPECT COMPRESSOR FOR METALLIC SOUND
Check there is abnormal metallic sound from the compressor
when the A/C switch is ON.
If abnormal metallic sound is heard, replace the compressor as-
sembly.
2. INSPECT REFRIGERANT PRESSURE
(See page AC-3)
3. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
4. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure resistance between terminal 1 and 2.
Standard resistance:
570 - 1,050 W at 20°C (68 °F)
If resistance is not as specified, replace the compressor.
5. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
6. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE OR
ROTOR
7. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a) Start engine.
(b) Check for abnormal noise from the compressor when the
A/C switch is OFF.
If abnormal noise is being emitted, replace the rotor of magnetic
clutch.
8. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
3 and the negative (-) lead to the body ground.
(c) Check that the magnetic clutch is energized.
If operation is not as specified, replace the magnetic clutch.