1999 TOYOTA CAMRY heater

AC0LL±02
Z19146
1MZ±FE engine:
No. 1 Engine Coolant Temperature
(ECT) Switch
Compressor
Engine Room Junction Block No. 2

Engine Main Relay
(Marking: ENGINE MAIN)

No. 1 Cooling Fan Relay
(Marking: FAN NO.1)Engine Room Relay Block No. 1

Magnetic Clutch Relay
(Marking: MG CLT)

Heater Main Relay
(Marking: HTR)

No. 2 Cooling Fan Relay
(Marking: FAN NO.2)

No. 3 Cooling Fan Relay
(Marking: FAN NO.3)
5S±FE engine models:
Engine Coolant Temperature
(ECT) Switch Receiver Pressure SwitchCondenser Fan

Fan Motor1MZ±FE engine:
No. 2 Engine Coolant Temperature
(ECT) Switch
Condenser
Blower Unit A/C Unit
A/C Control Assembly

A/C Switch

Blower Speed Control Switch

Mode Switch
Air Outlet Servomotor
Heater Radiator
Thermistor
Blower ResistorBlower Motor 1MZ±FE:
A/C Amplifier Expansion Valve5S±FE engine:
ECM (Built in A/C Amplifier)
Evaporator
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±13
2495 Author: Date:
LOCATION

AC21T±01
AC±14
± AIR CONDITIONINGTROUBLESHOOTING
2496 Author: Date:
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
No blower operation
4. HTR Fuse
5. Heater main relay
6. Blower motor
7. Blower resistor
8. Blower speed control switch
9. Wire harness±
AC±70
AC±63
AC±64
AC±84
±
No air temperature control1. Engine coolant volume
2. A/C control assembly±
AC±80
No air inlet control1. A/C control assemblyAC±80
No air outlet control
1. HTR Fuse
2. Air outlet servomotor
3. Mode switch±
AC±65
AC±84
No compressor operation
1. Refrigerant volume
2. A.C Fuse
3. HTR Fuse
4. Magnetic clutch relay
5. Magnetic clutch
6. Compressor
7. Pressure switch
8. Heater main relay
9. Blower speed control switch
10.A/C switch
11. *1 ECM
*
2 A/C amplifier
12.Wire harness
AC±3
±
±
AC±71
AC±39
AC±39
AC±67
AC±70
AC±84
AC±84
DI±218
AC±88
±
No compressor operates intermittently
1. Refrigerant volume
2. Condenser fan
3. Pressure switch
4. *1 ECM
*2 A/C amplifier
5. Thermistor
6. Wire harnessAC±3
AC±74
AC±67
DI±218
AC±88
AC±24
±
No cool air comes out
1. Refrigerant volume
2. Refrigerant pressure
3. Drive belt
4. Compressor lock sensor
5. Magnetic clutch
6. Compressor
7. Pressure switch
8. Thermistor
9. A/C switch
10.*1 ECM
*2 A/C amplifier
11. Wire harnessAC±3
AC±3
AC±16
AC±16
AC±39
AC±39
AC±67
AC±24
AC±84
DI±218
AC±88
±

± AIR CONDITIONINGTROUBLESHOOTING
AC±15
2497 Author: Date:
Cool air comes out only at high engine rpm
1. Refrigerant volume
2. Drive belt
3. Magnetic clutch
4. Compressor
5. Condenser
6. Condenser fan
7. Receiver
8. Expansion valve
9. Evaporator
10.Thermistor
11. Refrigerant line
12.Pressure switch
13.*
1 ECM
*2 A/C amplifier
AC±3
AC±16
AC±16
AC±39
AC±52
AC±74
AC±49
AC±59
AC±30
AC±24
AC±21
AC±67
DI±218
AC±88
No engine idle±up when A/C switch ON
1. *1 ECM
*2 A/C amplifier
2. Wire harness
DI±218
AC±88
±
Blinking of A/C indicator
1. *1 ECM
*2 A/C amplifier
2. Thermistor
3. Compressor
DI±218
AC±88
AC±24
AC±39
A/C indicator does not lights up when turn mode switch to DEF.
position
1. A/C Fuse
2. Mode switch
3. A/C switch
4. *
1 ECM
*2 A/C amplifier
5. Wire harness
±
AC±84
AC±84
DI±218
AC±88
±
No warm air comes out
1. Engine coolant volume
2. A/C control assembly
3. Heater radiator±
AC±80
AC±57
No condenser fan operation
1. CDS FAN Fuse
2. Engine main relay
3. Cooling fan relay No. 1
4. Cooling fan relay No. 2
5. Cooling fan relay No. 3
6. Condenser fan motor
7. Pressure switch
8. *
1 Engine coolant temp. switch
*2 No. 1 Engine coolant temp. switch
9. *2No. 2 Engine coolant temp. switch
10.Wire harness
±
±
AC±72
AC±72
AC±72
AC±74
AC±67
AC±92
AC±92
AC±92
±
*1: 5S±FE Engine Models
*
2: 1MZ±FE Engine Models

I07051
Heater Protector
Heater Radiator
Pipe

Packing

O±ring

O±ring
Heater Radiator
Plate
Heater CaseGrommet

Packing
x13
Air Outlet Servomotor
Water Seal
Air Duct (Foot)
Holder
Thermistor
5.4 (55, 48)
5.4 (55, 48)

O±ring

O±ring
Tube and Accessory
Expansion Valve
Drain Hose
Insulator
Plate
Evaporator
Heater Case
N´m (kgf´cm, in:lbf) : Specified torque

Non±reusable part
AC±26
± AIR CONDITIONINGAIR CONDITIONING UNIT
2508 Author: Date:

AC21W±01
N20288
N20237
Water Hose
MarkingUpper
LH
Hose ClipRH Heater Radiator Pipe
45 ± 10°
Lower
I09160
± AIR CONDITIONINGAIR CONDITIONING UNIT
AC±27
2509 Author: Date:
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of refrig-
erant.
Specified amount: 800 ± 50 g (28.22 ± 1.76 oz.)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
3. DISCONNECT WATER HOSE FROM HEATER RADIA-
TOR PIPES
(a) Using pliers, grip the claws of the hose clip and slide the
hose clip along the hose.
(b) Disconnect the water hose.
HINT:
At the time of installation, please refer to the following items.

Push the water hose onto the heater radiator pipe as far
as ridge on the pipe and install the hose clip.

Install the hose clip in a position, as shown in the illustra-
tion.
4. REMOVE BLOWER UNIT (See page AC±35)
5. REMOVE INSTRUMENT PANEL AND REINFORCE-
MENT (See page BO±75)
6. DISCONNECT LIQUID AND SUCTION TUBES
(a) Using SST, remove the 2 piping clamps.
SST 09870±00015 (Suction tube)
09870±00025 (Liquid tube)

I03838
SST
I03839
PushSST
Pull
SST
Release
Lever
I06919
Disconnect the tube
using hand
Screw
Driver
Tube
I06878
Correct Wrong
Gap
N20281
AC±28
± AIR CONDITIONINGAIR CONDITIONING UNIT
2510 Author: Date:
(1) Inert SST to piping clamp.
HINT:
Confirm the direction of the piping clamp claw and SST using
the illustration showing on the caution label.
(2) Push down SST and release the clamp lock.
NOTICE:
Be careful not to deform the tubes, when pushing SST.
(3) Pull SST slightly and push the release lever, then re-
move the piping clamp with SST.
(4) Remove the piping clamp from SST.
(b) Disconnect the both tubes.
NOTICE:

Do not use tools like screwdriver to remove the tube.

Cap the open fittings immediately to keep moisture or
dirt out of the system.
HINT:
At the time of installation, please refer to the following item.

Lubricate 4 new O±rings with compressor oil and install
the tubes.

After connection, check the fitting for claw of the piping
clamp.
7. REMOVE A/C UNIT
(a) Disconnect the connector.
(b) Slide the floor carpet backward.
(c) Remove the rear heater duct.
(d) Remove the 2 nuts and A/C unit.

AC21X±01
N20287
N20283
N20243
x13Water Seal
Plate
EvaporatorInsurator
N20293
± AIR CONDITIONINGAIR CONDITIONING UNIT
AC±29
2511 Author: Date:
DISASSEMBLY
1. REMOVE AIR OUTLET SERVOMOTOR
(a) Release the claw and pull out the plate.
(b) Remove the 3 screws and servomotor.
2. REMOVE HEATER RADIATOR
(a) Remove the 3 screws and 3 plates.
(b) Remove the 2 clips and heater radiator pipes.
(c) Pull out the heater radiator.
3. REMOVE THESE FOOT AIR DUCT LH
4. REMOVE EXPANSION VALVE
(a) Remove piping clamp.
(b) Remove the packings.
(c) Using a hexagon wrench (5.0 mm, 0.20 in.), remove the
2 bolts and separate the expansion valve and evaporator.
5. REMOVE EVAPORATOR
(a) Remove the grommet from the evaporator.
(b) Using a knife, cut off each packings.
HINT:
Do not reuse the packing.
(c) Remove the 13 screws and separate the heater cases,
then remove the evaporator and water seal.
(d) Release the 4 claws and remove the plate from the evap-
orator.
6. PEEL OFF THE WATER SEAL FROM HEATER UNIT
7. REMOVE THERMISTOR
Pull out the thermistor with the holders.

AC0LX±02
N21046
N21045
Packing Paper
N21044
± AIR CONDITIONINGAIR CONDITIONING UNIT
AC±31
2513 Author: Date:
REASSEMBLY
1. INSTALL THERMISTOR TO EVAPORATOR
2. INSTALL EVAPORATOR
(a) Install the plate to the evaporator.
(b) Install the evaporator on the insulator.
(c) Connect the heater case with the 13 screws.
NOTICE:
The packing for water seal should be replaced, with a new
one when the A/C unit is reassembled.
(d) Install the 2 new packings.
(e) Install the grommet to evaporator.
HINT:
If evaporator is replaced, add compressor oil to the compressor.
Add 40 ± 50 cc (1.4 ± 1.7 fl.oz.)
Compressor oil: ND ± OIL 8 or equivalent
3. INSTALL EXPANSION VALVE
(a) Lubricate 2 new O±rings with compressor oil and install
the tubes.
(b) Install the liquid tube and suction tube on the expansion
valve.
(c) Using a knife, cut off packing paper of packing while peel
off the paper, as shown in the illustration.
HINT:
Leave the packing paper untaped on the tube side so that the
installation bolt hole for remains visible.
(d) Apply new packing.
NOTICE:
Do not overtape the packing beyond the expansion valve
edge.