condenser TOYOTA SEQUOIA 2001 Service Repair Manual

PP1AH±01
PP±84
± PREPARATIONAIR CONDITIONING
142 Author: Date:
2005 SEQUOIA (RM1146U)
LUBRICANT
ItemCapacityClassification
Compressor oil±ND±OIL 8 or equivalent
When replacing condenser40 cc (1.4 fl. oz.)
When replacing evaporator40 cc (1.4 fl. oz.)

SS0O4±05
SS±52
± SERVICE SPECIFICATIONSAIR CONDITIONING
194 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
REFRIGERANT LINE
Receiver x Liquid tube5.45548 in.´lbf
Condenser x Discharge hose5.45548 in.´lbf
Condenser x Liquid tube5.45548 in.´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Liquid and suction tube (Nut)5.45548 in.´lbf
Liquid and suction tube x Rear A/C unit5.45548 in.´lbf
COOLING UNIT
Evaporator x Expansion valve x Liquid and suction tube3.53631 in.´lbf
REAR A/C UNIT
Tube and accessory x Evaporator5.45531 in.´lbf
Tube and accessory x Expansion valve2223516
Expansion valve x Liquid tube1313510
COMPRESSOR AND MAGNETIC CLUTCH
Compressor x Engine (Bolt)4748035
Compressor x Bracket x Engine (Nut)2525518
Pressure plate x Rotor x Compressor1818412.3
PRESSURE SWITCH
Pressure switch x Liquid tube101007
WATER TEMPERATURE SWITCH
Water temperature switch x Radiator7.47565 in.´lbf

DIDKN±01
I28851
R/B No. 2

Heater Main Relay
(Marking: HTR)
Compressor
Condenser
Receiver Pressure Switch
Integration Panel Assembly

A/C ECU

A/C Switch

Air Inlet Selector
Heater Unit

Heater Radiator

Air Mix Servomotor

Air Outlet Servomotor
Cooling Unit

Blower Motor Linear
Controller

Evaporator

Expansion Valve

ThermistorBlower Unit

Blower Motor

Air Inlet Servomotor
Water Valve
Rear Heater
Control Assembly
Condenser Fan
Ambient
Temperature
Sensor
Solar Sensor
Room
Temperature
Sensor
Rear Room Temperature
± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±2299
2493 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

DI3F3±10
DI±2304
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2498 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
Front A/C:
SymptomSuspected AreaSee page
Whole functions of the A/C system do not operate4. Integration control and panel
5. IG power source circuitIN±35
DI±2363
Air Flow Control: No blower operation
1. IG power source circuit
2. Heater main relay
3. Blower motor circuit
4. Integration control and panel
5. Blower motor controllerDI±2363
AC±95
DI±2374
IN±35
AC±83
Air Flow Control: No blower control
1. Blower motor circuit
2. Integration control and panel
3. Solar sensor circuit
4. Blower motor controllerDI±2374
IN±35
DI±2336
AC±83
Air Flow Control: Insufficient air flow1. Blower motor circuitDI±2374
Temperature Control: No cool air comes out
1. Refrigerant volume
2. Drive belt tension
3. Refrigeration system inspection with manifold gauge set
4. Compressor circuit
5. Pressure switch circuit
6. Front air mix damper position sensor circuit
7. Front air mix damper control servomotor circuit
8. Front room temp. sensor circuit
9. Ambient temp. sensor circuit
10.Vehicle speed signal circuit
11. Integration control and panelAC±23
AC±15
AC±3
DI±2381
DI±2342
DI±2346
DI±2355
DI±2319
DI±2322
DI±2370
IN±35
Temperature Control: No warm air comes out
1. Front air mix damper position sensor circuit
2. Front air mix damper control servomotor circuit
3. Front room temp. sensor circuit
4. Ambient temp. sensor circuit
5. Vehicle speed signal circuit
6. Front evaporator temp. sensor circuit
7. Integration control and panelDI±2346
DI±2355
DI±2319
DI±2322
DI±2370
DI±2325
IN±35
Temperature Control: Output air is warmer or cooler than the set
temperature or response is slow
1. Refrigerant volume
2. Drive belt tension
3. Refrigeration system inspection with manifold gauge set
4. Cooling fan system
5. Solar sensor circuit
6. Front room temp. sensor circuit
7. Ambient temp. sensor circuit
8. Vehicle speed signal circuit
9. Front evaporator temp. sensor circuit
10.Front air mix damper position sensor circuit
11. Front air mix damper control servomotor circuit
12.Front air inlet damper position sensor circuit
13.Front air inlet damper control servomotor circuit
14.Condenser
15.Evaporator
16.Heater radiator
17.Expansion valve
18.Integration control and panelAC±23
AC±15
AC±3
AC±96
DI±2336
DI±2319
DI±2322
DI±2370
DI±2325
DI±2346
DI±2355
DI±2349
DI±2358
AC±65
AC±24
AC±35
AC±29
IN±35

DI±2306
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2500 Author: Date:
2005 SEQUOIA (RM1146U) Temperature Control: Output air is warmer or cooler than the set
temperature or response is slow
1. Refrigerant volume
2. Drive belt tension
3. Refrigeration system inspection with manifold gauge set
4. Cooling fan system
5. Solar sensor circuit
6. Rear room temp. sensor circuit
7. Ambient temp. sensor circuit
8. Rear evaporator temp. sensor circuit
9. Water valve damper position sensor circuit
10.Water valve damper control servomotor circuit
11. Condenser
12.Evaporator
13.Heater radiator
14.Expansion valve
15.Heater control assembly
16.Integration control and panelAC±23
AC±15
AC±3
AC±96
DI±2336
DI±2333
DI±2322
DI±2330
DI±2352
DI±2361
AC±65
AC±70
AC±45
AC±76
IN±35
IN±35
Temperature Control: No temperature control (only Max. cool or
Max. warm)
1. Rear room temp. sensor circuit
2. Ambient temp. sensor circuit
3. Water valve damper position sensor circuit
4. Water valve damper control servomotor circuit
5. Heater control assembly
6. Integration control and panelDI±2333
DI±2322
DI±2352
DI±2361
IN±35
IN±35

AT138±01
D10672
N´m (kgf´cm, ft´lbf) : Specified torqueOil Cooler PipeOil Cooler Bracket
Clip
ClipOil Cooler
11 (110, 8)
5.0 (50, 48 in.´lbf)
Clip
Grommet
Grommet
Condenser Mounting
Insulator
11 (110, 8)
Hose
Grommet
Condenser Mounting
Insulator
± AUTOMATIC TRANSMISSION (A750E, A750F)AIR COOLED OIL COOLER
AT±15
2923 Author: Date:
2005 SEQUOIA (RM1146U)
AIR COOLED OIL COOLER
COMPONENTS

AT139±01
D10673
D10674
D10675
D05209
AT±16
± AUTOMATIC TRANSMISSION (A750E, A750F)AIR COOLED OIL COOLER
2924 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE PIPE
Loosen the 2 clips and disconnect the 2 hoses.
2. REMOVE OIL COOLER
(a) Remove the 3 bolts and oil cooler.
Torque: 11 N´m (110 kgf´cm, 8 ft´lbf)
(b) Remove the bolt, transmission oil cooler bracket and
grommet.
Torque: 4.9 N´m (50 kgf´cm, 43 in.´lbf)
(c) Remove the 2 grommets and condenser mounting insula-
tors.
3. REMOVE OIL COOLER TUBE
(a) Loosen the 2 clips and disconnect the 2 hoses.
(b) Remove the bolt and oil cooler tube with the 2 hoses.
Torque: 5.0 N´m (50 kgf´cm, 48 in.´lbf)
(c) Loosen the 2 clips and disconnect the 2 hoses.

I22614
Condition: Insufficient cooling
Single A/C:
Dual A/C:
I22614
Condition: Insufficient cooling
Single A/C:
Dual A/C:
NOTE: These indications
are shown when the refrig-
eration system has been
opened and the refrigerant
has been charged without
vacuum purging.
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±7
3734 Author: Date:
2005 SEQUOIA (RM1146U)
(6) Refrigerant overcharged or insufficient cooling of
condenser
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

No air bubbles seen through the
sight glass even when the engine
rpm is lowered
Unable to develop sufficient per-
formance due to excessive refrig-
erant

Insufficient cooling of condenser
Excessive refrigerant in
cycle"refrigerant overcharged

Condenser cooling
insufficient"condenser fins
clogged or cooling fan faulty
(1) Clean condenser
(2) Check cooling fan with fluid
coupling operation
(3) If (1) and (2) are in normal
state, check amount of refrigerant
and charge proper amount of re-
frigerant
(7) Air present in refrigeration system
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

The low pressure piping hot to
the touch

Bubbles seen in sight glass
Air in refrigeration system

Air present in refrigeration sys-
tem

Insufficient vacuum purging
(1) Check compressor oil to see if
it is dirty or insufficient
(2) Evacuate air and charge new
refrigerant

AC1JW±06
I21418
R/B No. 2

Heater Main Relay
(Marking: HTR)
Compressor
Condenser
Receiver Pressure Switch
Integration Panel Assembly

A/C ECU

A/C Switch

Air Inlet Selector
Heater Unit

Heater Radiator

Air Mix Servomotor

Air Outlet Servomotor
Cooling Unit

Blower Motor Linear
Controller

Evaporator

Expansion Valve

ThermistorBlower Unit

Blower Motor

Air Inlet Servomotor
Water Valve
Rear Heater
Control Assembly
Condenser Fan
Ambient
Temperature
Sensor
Solar Sensor
Room
Temperature
Sensor
Rear Room Temperature Sensor
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±13
3740 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

AC1K4±04
± AIR CONDITIONINGREFRIGERANT LINE
AC±23
3750 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
NOTICE:
Cap the openings immediately to keep moisture or dirt out of the system.
3. TIGHTEN JOINT OF BOLT OR NUT TO SPECIFIED TORQUE
NOTICE:
Do not exceed specified torque.
Part tightenedN´mkgf´cmft´lbf
Receiver x Liquid tube5.45548 in.´lbf
Condenser x Discharge hose5.45548 in.´lbf
Condenser x Liquid tube5.45548 in.´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Liquid and suction tube (Nut)5.45548 in.´lbf
Liquid and suction tube x Rear A/C unit5.45548 in.´lbf
4. EVACUATE AIR IN REFRIGERATION SYSTEM AND CHARGE SYSTEM WITH REFRIGERANT
Specified amount:
Single A/C: 750 ± 50 g (26.45 ± 1.76 oz.)
Dual A/C: 1050 ± 50 g (37.03 ± 1.76 oz.)
5. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector, check for leakage of refrigerant.
6. INSPECT AIR CONDITIONING OPERATION