| Last Modified: 4-30-2014 | 6.6 T | Doc ID: RM000001CM6000X |
| Model Year: 2006 | Model: LX470 | Prod Date Range: [05/2005 - ] |
| Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM: PROBLEM SYMPTOMS TABLE; 2006 MY LX470 [05/2005 - ] | ||
PROBLEM SYMPTOMS TABLE
FRONT AIR CONDITIONING
|
Symptom |
Suspected area |
See page |
|---|---|---|
|
All functions do not operate |
1. IG power source circuit |
|
|
2. A/C amplifier |
|
|
|
3. Navigation system |
|
|
|
Air flow control: no blower operation |
1. Heater main relay |
|
|
2. Blower motor circuit |
|
|
|
3. A/C amplifier |
|
|
|
4. Blower motor control relay |
|
|
|
Air flow control: no blower control |
1. Blower motor circuit |
|
|
2. A/C amplifier |
|
|
|
3. Solar sensor circuit |
|
|
|
4. Blower motor control relay |
|
|
|
Air flow control: insufficient air flow |
1. Blower motor circuit |
|
|
2. Blower motor control relay |
|
|
|
Temperature control: no cool air comes out |
1. Refrigerant volume |
|
|
2. Refrigeration system inspection with manifold gauge set |
|
|
|
3. Compressor circuit |
|
|
|
4. Pressure switch circuit |
|
|
|
5. Front air mix damper position sensor circuit |
|
|
|
6. Front air mix damper control servomotor circuit |
|
|
|
7. Front room temperature sensor circuit |
|
|
|
8. Ambient temperature sensor circuit |
|
|
|
9. A/C amplifier |
|
|
|
10. ECM |
|
|
|
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 temperature sensor circuit |
|
|
|
4. Ambient temperature sensor circuit |
|
|
|
5. Front evaporator temperature sensor circuit |
|
|
|
6. A/C amplifier |
|
|
|
Temperature control: output air is warmer or cooler than the set temperature, or response is slow |
1. Refrigerant volume |
|
|
2. Refrigeration system inspection with manifold gauge set |
|
|
|
3. Solar sensor circuit |
|
|
|
4. Front room temperature sensor circuit |
|
|
|
5. Ambient temperature sensor circuit |
|
|
|
6. Front evaporator temperature sensor circuit |
|
|
|
7. Front air mix damper position sensor circuit |
|
|
|
8. Front air mix damper control servomotor circuit |
|
|
|
9. Front air inlet damper position sensor circuit |
|
|
|
10. Front air inlet damper control servomotor circuit |
|
|
|
11. Condenser |
|
|
|
12. Evaporator |
|
|
|
13. Heater radiator |
|
|
|
14. Expansion valve |
|
|
|
15. A/C amplifier |
|
|
|
16. ECM |
|
|
|
Temperature control: no temperature control (only max, cool or max, warm) |
1. Front room temperature sensor circuit |
|
|
2. Ambient temperature sensor circuit |
|
|
|
3. Front air mix damper position sensor circuit |
|
|
|
4. Front air mix damper control servomotor circuit |
|
|
|
5. A/C amplifier |
|
|
|
No air inlet control |
1. Front air inlet damper position sensor circuit |
|
|
2. Front air inlet damper control servomotor circuit |
|
|
|
3. A/C amplifier |
|
|
|
No air flow control |
1. Air outlet damper position sensor circuit |
|
|
2. Air outlet damper control servomotor circuit |
|
|
|
3. A/C amplifier |
|
|
|
Engine idle up does not occur, or is continuous |
1. Compressor circuit |
|
|
2. ECM |
|
![2006 MY LX470 [05/2005 - ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: IG Power Source Circuit](../../../../stylegraphics/info.gif "2006 MY LX470 [05/2005 - ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: IG Power Source Circuit")
REAR AIR CONDITIONING
|
Symptom |
Suspected area |
See page |
|---|---|---|
|
All functions do not operate |
1. Rear A/C amplifier |
|
|
2. IG power source circuit |
|
|
|
Air flow control: no blower operation |
1. Rear heater main relay |
|
|
2. Rear blower motor |
|
|
|
3. Rear power transistor |
|
|
|
4. Rear A/C amplifier |
|
|
|
5. IG power source circuit |
|
|
|
Air flow control: no blower control |
1. Rear heater main relay |
|
|
2. Rear blower motor |
|
|
|
3. Rear power transistor |
|
|
|
4. Rear A/C amplifier |
|
|
|
5. Solar sensor circuit |
|
|
|
Air flow control: insufficient air flow |
1. Rear blower motor |
|
|
2. Rear power transistor |
|
|
|
Temperature control: no cool air comes out |
1. Refrigerant volume |
|
|
2. Refrigerant system inspection with manifold gauge set |
|
|
|
3. Compressor circuit |
|
|
|
4. Pressure switch circuit |
|
|
|
5. Rear air mix damper position sensor circuit |
|
|
|
6. Rear air mix damper control servomotor circuit |
|
|
|
7. Rear room temperature sensor circuit |
|
|
|
8. Ambient temperature sensor circuit |
|
|
|
9. Rear A/C amplifier |
|
|
|
Temperature control: no warmair comes out |
1. Rear air mix damper position sensor circuit |
|
|
2. Rear air mix damper control servomotor circuit |
|
|
|
3. Rear room temperature sensor circuit |
|
|
|
4. Ambient temperature sensor circuit |
|
|
|
5. Rear evaporator temperature sensor circuit |
|
|
|
6. Rear A/C amplifier |
|
|
|
Temperature control: output air is warmer or cooler than the set temperature or response is slow |
1. Refrigerant volume |
|
|
2. Refrigeration system inspection with manifold gauge set |
|
|
|
3. Solar sensor circuit |
|
|
|
4. Rear room temperature sensor circuit |
|
|
|
5. Ambient temperature sensor circuit |
|
|
|
6. Rear evaporator temperature sensor circuit |
|
|
|
7. Rear air mix damper position sensor circuit |
|
|
|
8. Rear air mix damper control servomotor circuit |
|
|
|
9. Condenser |
|
|
|
10. Evaporator |
|
|
|
11. Heater radiator |
|
|
|
12. Expansion valve |
|
|
|
13. Rear A/C amplifier |
|
|
|