Hello to one and all. Well my first post on this site is a pretty tough one. I have a 2007 Toyota Camry with the new clutch less AC compressor that is not turning on, It began turning on and off about a week ago,so I checked it's high and low pressures and they are perfect 40 low 225 high when it was on.Since then it has turned off completely.This style of compressor turns all the time but has some sort off compression switch located inside the compressor.There is no 12 signal coming to this switch,but there is 12 volts coming to the pressure switch and the condenser fans do turn on and blow at higher speeds when the ac is turned on. The ac light inside on the control panel stay on all the time and cannot be turned off by pressing the button in like it should, remove the battery cable for a few minute and the ac light will go out but once pressed it will illuminate again and never go out. If any one as access to a factory manual and can help me with the electrical trouble shooting please let me know.FYI car was in an accident 6 month ago on drivers front so warrant work is out the window that's why I'm not able to take it to the dealer. Thanks

9. A/C COMPRESSOR

(a) General

(1) The A/C compressor is a continuously variable capacity type in which its capacity can be varied in accordance with the cooling load of the air conditioning.

(2) This compressor consists of the A/C pulley, shaft, lug plate, swash plate, piston, shoe, crank chamber, cylinder, and solenoid valve.

(3) The A/C pulley with built-in magnetic clutch and the lock sensor that detects whether the magnetic clutch is locked are installed on models with the 2GR-FE.

(4) The DL (Damper Limiter) type A/C pulley is installed on models with the 2AZ-FE.

(5) A solenoid valve that adjusts the suction pressure so that the compressor capacity can be controlled as desired is provided.

(6) The internal valve is provided on models with 2AZ-FE to improve the A/C compressor durability under the high speed and large thermal load conditions. The internal valve is integrated into the solenoid valve.

(b) Solenoid Valve Operation

(1) The crank chamber is connected to the discharge passage. A solenoid valve is provided between the discharge passage (LO pressure) and the discharge passage (HI pressure).

(2) The solenoid valve operates under duty cycle control in accordance with the signals from A/C amplifier.

(3) When the solenoid valve closes (solenoid coil is energized), a difference in pressure is created and the pressure in the crank chamber decreases. Then, the pressure that is applied to the right side of the piston becomes greater than the pressure that is applied to the left side of the piston. This compresses the spring and tilts the swash plate. As a result, the piston stroke increases and the discharge capacity increases.

(4) When the solenoid valve opens (solenoid coil is not energized), the difference in pressure disappears. Then, the pressure that is applied to the left side of the piston becomes the same as the pressure that is applied to the right side of the piston. Thus, the spring elongates and eliminates the tilt of the swash plate. As a result, there is no piston stroke and the discharge capacity is reduced.

(c) Internal Valve Operation (for 2AZ-FE)

(1) The internal valve operates when the A/C compressor speed has increased rapidly, the A/C compressor speed is high, or when thermal load has suddenly changed. As a result, the A/C compressor capacity is reduced, increasing the durability of the A/C compressor.

(d) DL type A/C Pulley (for 2AZ-FE)

(1) This pulley contains a damper to absorb the torque fluctuations of the engine and a limiter mechanism to protect the drive belt in case the compressor locks. If the compressor locks, the limiter mechanism causes the spoke portion of the pulley to break, thus separating the pulley from the compressor.

10. LOCK SENSOR (for 2GR-FE)

The lock sensor sends A/C pulley speed signals to the A/C amplifier. The A/C amplifier determines whether the magnetic clutch is locked or not by using those signals and engine speed signals.

11. ROOM TEMPERATURE SENSOR (for AUTO A/C)

The room temperature sensor detects the cabin temperature based on changes in the resistance of its built-in thermistor and sends a signal to the A/C amplifier.

12. AMBIENT TEMPERATURE SENSOR

The ambient temperature sensor detects the outside temperature based on changes in the resistance of its built-in thermistor and sends a signal to the A/C amplifier.

13. SOLAR SENSOR (for AUTO A/C)

(a) The solar sensor consists of a photo diode, two amplifier circuits for the solar sensor, and frequency converter circuit for the light control sensor.

(b) A solar sensor detects (in the form of changes in the current that flows through the built-in photo diode) the changes in the amount of sunlight from the LH and RH sides (2 directions) and outputs these sunlight strength signals to the A/C amplifier.




14. EVAPORATOR TEMPERATURE SENSOR

The evaporator temperature sensor detects the temperature of the cool air immediately past the evaporator in the form of resistance changes, and outputs it to the A/C amplifier.

15. A/C PRESSURE SENSOR

The A/C pressure sensor detects the refrigerant pressure and outputs it to the A/C amplifier in the form of voltage changes.

DIAGNOSTIC TROUBLE CODE CHART
AIR CONDITIONING SYSTEM
DTC No.
Detection Item
Trouble Area
Memory

*4
See page

B1411/11

*1, *5
Room Temperature Sensor Circuit
1. Room temperature sensor

2. Harness or connector between room temperature sensor and A/C amplifier

3. A/C amplifier
Memorized

(8.5 min. or more)


B1412/12
Ambient Temperature Sensor Circuit
1. Ambient temperature sensor

2. Harness or connector between ambient temperature sensor and A/C amplifier

3. A/C amplifier
Memorized

(8.5 min. or more)


B1413/13
Evaporator Temperature Sensor Circuit
1. Air conditioning harness (evaporator temperature sensor)

2. A/C amplifier
Memorized

(8.5 min. or more)


B1421/21

*3, *5
Solar Sensor Circuit (Passenger Side)
1. Solar sensor

2. Harness or connector between solar sensor and A/C amplifier

3. Harness or connector between solar sensor and main body ECU

4. A/C amplifier

5. Main body ECU
Memorized

(8.5 min. or more)

(only when circuit is shorted)


B1422/22
Compressor Lock Sensor Circuit
1. A/C compressor (A/C lock sensor)

2. Compressor drive belt

3. Harness or connector between compressor and magnetic clutch (A/C lock sensor)

4. A/C amplifier

5. CAN communication system
-


B1423/23
Pressure Switch Circuit
1. Pressure sensor

2. Harness or connector between pressure sensor and A/C amplifier

3. Refrigerant pipe line

4. A/C amplifier
-


B1424/24

*3, *5
Solar Sensor Circuit (Driver Side)
1. Solar sensor

2. Harness or connector between solar sensor and A/C amplifier

3. Harness or connector between solar sensor and main body ECU

4. A/C amplifier

5. Main body ECU
Memorized

(8.5 min. or more)

(only when circuit is shorted)


B1441/41
Air Mix Damper Control Servo Motor Circuit (Passenger Side)
1. A/C amplifier

2. Air conditioning harness

3. Air mix control servo motor
Memorized

(30 sec.)


B1442/42
Air Inlet Damper Control Servo Motor Circuit
1. A/C amplifier

2. Air conditioning harness

3. Air inlet control servo motor
Memorized

(30 sec.)


B1443/43
Air Outlet Damper Control Servo Motor Circuit
1. A/C amplifier

2. Air conditioning harness

3. Air outlet control servo motor
Memorized

(30 sec.)


B1446/46

*5
Air Mix Damper Control Servo Motor Circuit (Driver Side)
1. A/C amplifier

2. Air conditioning harness

3. Air mix control servo motor
Memorized

(30 sec.)


B1451/51
Compressor Solenoid Circuit
1. A/C compressor

2. Harness or connector between A/C amplifier and solenoid of externally changeable compressor

3. A/C amplifier
-


B1497/97
BUS IC Communication Malfunction
1. Air conditioning harness

2. A/C amplifier
Memorized

(10 sec. or more)


B1499/99
Multiplex Communication Circuit
CAN communication system
Memorized




*1: If the room temperature is approx. -18.6°C (-1.48°F) or lower, DTC B1411/11 may be output even though the system is normal.
*2: If the ambient temperature is approx. -52.9°C (-63.22°F) or lower, DTC B1412/12 may be output even though the system is normal.
*3: If the check is performed in a dark place, DTC B1421/21 or B1424/24 (solar sensor circuit abnormal) may be output even though the system is normal.
*4: The A/C amplifier memorizes the DTC of the respective malfunction if it has occurred for the period indicated in the brackets.
*5: For AUTO A/C

If you have code B1422/22, you have the compressor locked up or something major.
I would check the Mag clutch relay first.
Attachment 21218

I am looking for Repair manual with wiring Diagram for 2007 Toyota Hiace TRH series

Quote:

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Originally Posted by boutne

I am looking for Repair manual with wiring Diagram for 2007 Toyota Hiace TRH series

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The entire manual is available for purchase. Somewhere, I'm certain.
However, if you have a particular system you're trying to address, we can often help with schematic diagrams and strategy based diagnostics.