heater TOYOTA LAND CRUISER 1998 Factory Repair Manual

I24827
w/ Navigation System:
Board
Knob
Integration Control Panel
Radio
Receiver Radio Receiver Bracket LH
A/C Amplifier
EMV
Radio Receiver
Bracket RH
Heater Control Housing
AC-98
- AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2823 Author
: Date
:
2004 LAND CRUISER (RM1071U)

I25152
w/o Navigation System:
Radio Receiver Bracket LH
Radio Receiver
Bracket RH
Radio
Receiver
Heater Control Housing
A/C Amplifier
Board
Integration Control Panel Knob
Knob
- AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC-99
2824 Author
: Date
:
2004 LAND CRUISER (RM1071U)

AC3P0-01
I25192
I25193
I24781
I24782
I25159
AC-102
- AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2827 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DISASSEMBLY
1. w/ navigation system:
REMOVE KNOB
Using a screwdriver, pull out the knobs.
HINT:
Tape up the screwdriver tip before use.
2. w/ navigation system:
REMOVE INTEGRATION CONTROL PANEL
(a) Remove the 2 screws.
(b) Remove the screw and the board.
3. w/ navigation system:
REMOVE HEATER CONTROL HOUSING
(a) Disconnect the connector clamps.
(b) Remove the 2 screws and pull out the board from the
heater control housing.
4. REMOVE KNOB
(a) Using a screwdriver, pull out the knobs.
HINT:
Tape up the screwdriver tip before use.
(b) Remove the nut.
5. w/o LEXUS navigation system:
REMOVE KNOB
Using a screwdriver, pull out the knobs.
HINT:
Tape up the screwdriver tip before use.

AC3P1-01
I25173
C10 C19
: Bulb
I07872
I25174
C22 C12
AC-104
- AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2829 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. w/o Navigation system:
INSPECT ILLUMINATION OPERATION
(a) Connect the positive (+) lead from the battery to terminal
C10 and negative (-) lead to terminal C19, then check
that the indicators illuminate.
If operation is not as specified, check the faulty bulb.
(b) Remove the bulb.
(c) Using the tester as shown in the illustration, test the conti-
nuity.
If continuity exists, replace the heater control.
If no continuity exists, replace the bulb.
2. w/o Navigation system:
INSPECT INDICATORS OPERATION
(a) Connect the positive (+) lead from the battery to terminal
C22 and negative (-) lead to terminal C12.
(b) Check that the indicators come on while operate the
switches.
If operation is not as specified, replace the heater control.
3. INSPECT A/C CONTROL ASSEMBLY CIRCUIT
(See page DI-1309)

I25175
A16A8
- AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC-105
2830 Author
: Date
:
2004 LAND CRUISER (RM1071U)
4. w/ Navigation system:
INSPECT ILLUMINATION OPERATION
(a) Connect the positive (+) lead from the battery to terminal
A8 and negative (-) lead to terminal A16.
(b) Check that the indicators come on while operating the
switches.
If operation is not as specified, replace the heater control.
5. INSPECT A/C CONTROL ASSEMBLY CIRCUIT
(See page DI-1309)

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)

AC1KH-03
I07436
No. 1 BraceReinforcementInstrument Panel
Heater to Register No. 4 Duct
Heater to Register No. 3 Duct Heater Unit
Lower Defroster Nozzle No. 2 Brace
Heater Radiator
Air Duct (Vent)Cooling Unit
Air Mix Servomotor

Non-reusable partAir Outlet Servomotor
Air Duct (Foot)
PackingWater Hose
Heater Case
I06723 I06724
- AIR CONDITIONINGFRONT HEATER UNIT
AC-39
2764 Author
: Date
:
2004 LAND CRUISER (RM1071U)
FRONT HEATER UNIT
COMPONENTS

AC1KJ-03
I06730
I06731
I06732
I06733
I06734
- AIR CONDITIONINGFRONT HEATER UNIT
AC-41
2766 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DISASSEMBLY
1. REMOVE HEATER RADIATOR
(a) Pry out the packing.
(b) Remove the screw and the bracket.
(c) Remove the screw and the clamp.
(d) Pull out the heater radiator.
2. REMOVE AIR OUTLET SERVOMOTOR
Remove the 3 screws and the air outlet servomotor.
3. REMOVE AIR MIX SERVOMOTOR
(a) Disconnect the connector.
(b) Remove the 3 screws and the air mix servomotor.
(c) Release the claw and remove the wire harness.
4. REMOVE AIR DUCT (Foot Duct)
Remove the 2 screws and air duct.
5. REMOVE AIR DUCT (Vent Duct)
(a) Disconnect the mode damper control link.
(b) Remove the 2 screws and the air duct.

AC1KK-03
AC-42
- AIR CONDITIONINGFRONT HEATER UNIT
2767 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. CHECK HEATER RADIATOR FINS FOR BLOCKAGE
If the fins are clogged, remove them with compressed air.
2. CHECK FITTING FRO CRACKS OR SCRATCHES
If necessary repair or replace.

AC1KM-02
AC-44
- AIR CONDITIONINGFRONT HEATER UNIT
2769 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSTALLATION
Installation is in the reverse of removal (See page AC-40).