Air Conditioning System
Symptom
| Suspected area
| See page
|
Entire A/C system does not operate
| 1. IG power source circuit
|
Click here
|
2. A/C amplifier assembly
|
Click here
|
Air Flow Control: No blower operation
| 1. Heater relay circuit
|
Click here
|
2. Blower motor circuit
|
Click here
|
3. A/C amplifier assembly
|
Click here
|
Air Flow Control: No blower control
| 1. Heater relay circuit
|
Click here
|
2. Blower motor circuit
|
Click here
|
3. A/C amplifier assembly
|
Click here
|
Air Flow Control: Insufficient air output
| 1. Blower motor circuit
|
Click here
|
2. A/C amplifier assembly
|
Click here
|
Temperature Control: No cool air comes out
| 1. Volume of refrigerant
|
Click here
|
2. Refrigerant pressure
|
Click here
|
3. Pressure switch circuit
|
Click here
|
4. Air mix damper control servomotor circuit (Driver side)
|
Click here
|
5. Air mix damper control servomotor circuit (Passenger side)
|
Click here
|
6. Air mix damper position sensor circuit (Driver side)
|
Click here
|
7. Air mix damper position sensor circuit (Passenger side)
|
Click here
|
8. Room temperature sensor circuit.
|
Click here
|
9. Room humidity sensor circuit
|
Click here
|
10. Ambient temperature sensor circuit
|
Click here
|
11. Evaporator temperature sensor circuit
|
Click here
|
12. w/ Motor compressor assembly
|
Click here
|
13. A/C amplifier assembly
|
Click here
|
14. Multiplex communication circuit
|
Click here
|
Temperature Control: No warm air comes out
| 1. Heater relay circuit
|
Click here
|
2. Heater water pump circuit
|
Click here
|
3. Air mix damper control servomotor circuit (Driver side)
|
Click here
|
4. Air mix damper control servomotor circuit (Passenger side)
|
Click here
|
5. Air mix damper position sensor circuit (Driver side)
|
Click here
|
6. Air mix damper position sensor circuit (Passenger side)
|
Click here
|
7. Room temperature sensor circuit
|
Click here
|
8. Room humidity sensor circuit
|
Click here
|
9. Ambient temperature sensor circuit
|
Click here
|
10. Evaporator temperature sensor circuit
|
Click here
|
11. Heater radiator unit sub-assembly
|
Click here
|
12.A/C amplifier assembly
|
Click here
|
13. Multiplex communication circuit
|
Click here
|
Temperature Control: Output air is warmer or cooler than set temperature or response is slow
| 1. Volume of refrigerant
|
Click here
|
2. Refrigerant pressure
|
Click here
|
3. Air mix damper control servomotor circuit (Driver side)
|
Click here
|
4. Air mix damper control servomotor circuit (Passenger side)
|
Click here
|
5. Air mix damper position sensor circuit (Driver side)
|
Click here
|
6. Air mix damper position sensor circuit (Passenger side)
|
Click here
|
7. Room temperature sensor circuit
|
Click here
|
8. Room humidity sensor circuit
|
Click here
|
9. Ambient temperature sensor circuit
|
Click here
|
10. Solar sensor circuit (Driver side)
|
Click here
|
11. Solar sensor circuit (Passenger side)
|
Click here
|
12. Expansion valve
|
Click here
|
13. Heater radiator unit sub-assembly
|
Click here
|
14. A/C amplifier assembly
|
Click here
|
15. Multiplex communication circuit
|
Click here
|
Temperature Control: No temperature control (only Max. cool or Max. warm)
| 1. Room temperature sensor circuit
|
Click here
|
2. Room humidity sensor circuit
|
Click here
|
3. Ambient temperature sensor circuit
|
Click here
|
4. Air mix damper control servomotor circuit (Driver side)
|
Click here
|
5. Air mix damper control servomotor circuit (Passenger side)
|
Click here
|
6. Air mix damper position sensor circuit (Driver side)
|
Click here
|
7. Air mix damper position sensor circuit (Passenger side)
|
Click here
|
8. A/C amplifier assembly
|
Click here
|
No air inlet control
| 1. Air inlet damper control servomotor circuit
|
Click here
|
2. Air inlet damper position sensor circuit
|
Click here
|
3. A/C amplifier assembly
|
Click here
|
No air outlet control
| 1. Air outlet damper control servomotor circuit
|
Click here
|
2. Air outlet damper position sensor circuit
|
Click here
|
3. A/C amplifier assembly
|
Click here
|
Engine idle does not occur, or is continuous
| 1. A/C amplifier assembly
|
Click here
|
2. Multiplex communication circuit
|
Click here
|
Displayed set temperature value does not match with operation of temperature control switch
| 1. A/C amplifier assembly
|
Click here
|
Brightness does not change when rheostat volume or light control
| 1. Illumination light system
|
Click here
|
2. A/C amplifier assembly
|
Click here
|
Unable to access the diagnosis mode
| 3. A/C amplifier assembly
|
Click here
|
DTC not recorded. Set mode is cleared when IG switch is turned off.
| 1. Back-up power source circuit
|
Click here
|
2. A/C amplifier assembly
|
Click here
|
Unable to control A/C with the multi-display
| 1. Multiplex communication circuit
|
Click here
|
2. Multi-display assembly (w/Navi)
|
Click here
|
3. Integration control & panel assembly (w/o Navi)
|
Click here
|
4. A/C amplifier assembly
|
Click here
|
