1999 TOYOTA CAMRY sensor

± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±9
2491 Author: Date:
3. INSPECT IDLE±UP SPEED
(a) Warm up engine.
(b) Inspect idle±up speed when the these conditions are es-
tablished.

Warm up engine

Blower speed control switch at ºHIº position

A/C switch ON

Temperature control dial at ºCOOLº position
Magnetic clutch conditionIdle±up speed
Magnetic clutch not engaged700 ± 50 rpm
Magnetic clutch engaged700 ± 50 rpm
If idle speed is not as specified, check ISC valve and air intake
system.
4. INSPECT FOR LEAKAGE OF REFRIGERANT
(a) Perform in these conditions:

Stop engine.

Secure good ventilation (If not the gas leak detector
may react to volatile gases witch are not refrigerant,
such as evaporated gasoline and exhaust gas.)

Repeat the test 2 or 3 times.

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)
(b) Bring the gas leak detector close to the drain hose before
performing the test.
HINT:

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

Expose the gas leak detector sensor the 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 such reaction is unavoidable, the vehicle must be lifted up.
(c) If gas leak is not detected on the drain hose, remove the
blower resistor from the cooling unit. Then insert the gas
leak detector sensor into the unit and perform the test.
(d) Disconnect the connector and leave the pressure switch
for approx. 20 minutes. Then bring the gas leak detector
close to the pressure switch and perform the test.
(e) Bring the gas leak detector close to the refrigerant lines
and perform the test.

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
±

AC0M4±02
N01143
W
N01150
± AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC±39
2521 Author: Date:
COMPRESSOR AND MAGNETIC
CLUTCH
ON±VEHICLE INSPECTION
1. INSPECT COMPRESSOR FOR METALLIC SOUND
(a) Start engine.
(b) Check if there is a metallic sound from the compressor
when the A/C switch is on.
If metallic sound is heard, replace the compressor assembly.
2. INSPECT REFRIGERANT PRESSURE
See ºON±VEHICLE INSPECTIONº of AIR CONDITIONING
SYSTEM on page AC±3.
3. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure resistance between terminals 1 and 2.
Standard resistance: 65 ± 125 W at 20 °C (68 °F)
If resistance is not as specified, replace the compressor assem-
bly.
4. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT FROM SAFETY SEAL
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
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 near the compressor
when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
8. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
4 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.

AC0M4±02
N01143
W
N01150
± AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC±39
2521 Author: Date:
COMPRESSOR AND MAGNETIC
CLUTCH
ON±VEHICLE INSPECTION
1. INSPECT COMPRESSOR FOR METALLIC SOUND
(a) Start engine.
(b) Check if there is a metallic sound from the compressor
when the A/C switch is on.
If metallic sound is heard, replace the compressor assembly.
2. INSPECT REFRIGERANT PRESSURE
See ºON±VEHICLE INSPECTIONº of AIR CONDITIONING
SYSTEM on page AC±3.
3. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure resistance between terminals 1 and 2.
Standard resistance: 65 ± 125 W at 20 °C (68 °F)
If resistance is not as specified, replace the compressor assem-
bly.
4. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT FROM SAFETY SEAL
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
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 near the compressor
when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
8. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
4 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.

Q00207
AX036±01
Q04678
Drive GearVehicle Speed Sensor
O±Ring
Clip
± AUTOMATIC TRANSAXLE (A140E)VEHICLE SPEED SENSOR
AX±3
1896 Author: Date:
VEHICLE SPEED SENSOR
ON±VEHICLE REPAIR
1. REMOVE AIR CLEANER ASSEMBLY
2. DISCONNECT VEHICLE SPEED SENSOR CONNEC-
TOR
3. REMOVE VEHICLE SPEED SENSOR ASSEMBLY
(a) Remove the bolt and vehicle speed sensor assembly.
(b) Remove the clip and speedometer driven gear from ve-
hicle speed sensor.
(c) Remove the O±ring from vehicle speed sensor.
4. INSTALL VEHICLE SPEED SENSOR ASSEMBLY
(a) Coat a new O±ring with ATF and install it to the vehicle
speed sensor.
(b) Install the speedometer driven gear to the vehicle speed
sensor and clip.
(c) Install the vehicle speed sensor assembly and torque the
bolts.
Torque: 16 N´m (160 kgf´cm, 12 ft´lbf)
5. CONNECT VEHICLE SPEED SENSOR CONNECTOR
6. INSTALL AIR CLEANER ASSEMBLY

AX03H±01
Q10055
Q00211
Q10056
Q10057
± AUTOMATIC TRANSAXLE (A140E)AUTOMATIC TRANSAXLE UNIT
AX±19
1912 Author: Date:
REMOVAL
1. REMOVE BATTERY
2. REMOVE AIR CLEANER ASSEMBLY
3. DISCONNECT THROTTLE CABLE
4. w/ CRUISE CONTROL:
REMOVE CRUISE CONTROL ACTUATOR
(a) Disconnect the connector.
(b) Remove the 3 bolts and disconnect cruise control actua-
tor with the bracket.
5. DISCONNECT OIL COOLER HOSE
6. DISCONNECT VEHICLE SPEED SENSOR CONNEC-
TOR
7. DISCONNECT PARK/NEUTRAL POSITION SWITCH
CONNECTOR
8. DISCONNECT SHIFT SOLENOID VALVE NO.1 AND
NO.2 CONNECTOR
9. DISCONNECT SHIFT SOLENOID VALVE SL CONNEC-
TOR
10. REMOVE 2 FRONT SIDE ENGINE MOUNTING BOLTS
Torque:
TMC made: 80 N´m (820 kgf´cm, 59 ft´lbf)
TMMK made:
Green color bolt: 66 N´m (670 kgf´cm, 48 ft´lbf)
Silver color bolt: 44 N´m (450 kgf´cm, 32 ft´lbf)
11. DISCONNECT 2 GROUND CABLES
12. REMOVE STARTER
(a) Disconnect the connector and remove the nut.
(b) Remove the 2 bolts, shift cable clamp and starter.
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
13. REMOVE 3 TRANSAXLE±TO±ENGINE BOLTS
Torque: 66 N´m (670 kgf´cm, 48 ft´lbf)

Q05725
AX03N±01
Q04678
Clip O±Ring Driven GearVehicle Speed Sensor
± AUTOMATIC TRANSAXLE (A541E)VEHICLE SPEED SENSOR
AX±3
1923 Author: Date:
VEHICLE SPEED SENSOR
ON±VEHICLE REPAIR
1. REMOVE AIR CLEANER ASSEMBLY
2. DISCONNECT VEHICLE SPEED SENSOR CONNEC-
TOR
3. REMOVE VEHICLE SPEED SENSOR ASSEMBLY
(a) Remove the bolt and vehicle speed sensor assembly.
(b) Remove the clip and driven gear from the vehicle speed
sensor.
(c) Remove the O±ring from the vehicle speed sensor.
4. INSTALL VEHICLE SPEED SENSOR ASSEMBLY
(a) Coat a new O±ring with ATF and install it to the vehicle
speed sensor.
(b) Install the driven gear to the vehicle speed sensor and
clip.
(c) Install the vehicle speed sensor assembly with the bolt.
Torque: 4.9 N´m (50 kgf´cm, 43 in.´lbf)
5. CONNECT VEHICLE SPEED SENSOR CONNECTOR
6. INSTALL AIR CLEANER ASSEMBLY

Q05726
AX03O±01
Q04733
O±Ring AX±4
± AUTOMATIC TRANSAXLE (A541E)DIRECT CLUTCH SPEED SENSOR
1924 Author: Date:
DIRECT CLUTCH SPEED SENSOR
ON±VEHICLE REPAIR
1. DISCONNECT DIRECT CLUTCH SPEED SENSOR
CONNECTOR
2. REMOVE DIRECT CLUTCH SPEED SENSOR
(a) Remove the bolt and direct clutch speed sensor.
(b) Remove the O±ring from direct clutch speed sensor.
3. INSTALL DIRECT CLUTCH SPEED SENSOR
(a) Coat a new O±ring with ATF and install it to the direct
clutch speed sensor.
(b) Install the direct clutch speed sensor with the bolt.
Torque: 11 N´m (110 kgf´cm, 8 ft´lbf)