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.
Symptom | Suspect Area |
No blower operation | 1. HTR Fuse 2. Blower relay 3. Blower motor 4. Blower resistor 5. Blower speed control switch 6. Wire harness |
No air temperature control | 1. Engine coolant capacity 2. Heater control assembly |
No compressor operation | 1. Refrigerant capacity 2. A/C Fuse 3. Magnetic clutch 4. Compressor 5. Triple pressure switch 6. A/C switch 7. Thermistor, evaporator temp.sensor 8. Wire harness |
No cool comes out | 1. Refrigerant capacity 2. Refrigerant pressure 3. Drive belt 4. Magnetic clutch 5. Compressor 6. Triple pressure switch 7. Thermistor, evaporator temp. sensor 8. A/C switch 9. Heater control assembly 10. Wire harness |
Insufficient cooling | 1. Refrigerant capacity 2. Drive belt 3. Magnetic clutch 4. Compressor 5. Condenser 6. Expansion valve 7. Evaporator 8. Refrigerant lines 9. Triple pressure switch 10. Heater control assembly |
No engine idle-up when A/C switch ON | 1. Engine (and ECT) ECU 2. Wire harness |
No air inlet control | Heater control assembly |
No mode control | Heater control assembly |
No condenser fan operation | 1. ECU-IG Fuse 2. Fan motor 3. Engine (and ECT) ECU 4. Wire harness |
