Problem Symptoms Table
WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Air conditioning system
PROBLEM SYMPTOMS CHART
| Symptom | Suspected area | Refer to |
|---|---|---|
| No functions of A/C system operate | 1. ECU-IG2 fuse | - |
| 2. Wire harness or connector | - | |
| 3. Air conditioning amplifier | AIR CONDITIONING UNIT | |
| Airflow Control: Blower motor does not operate | 1. HTR, ECU-IG1 fuse | - |
| 2. Blower motor circuit | BLOWER MOTOR CIRCUIT | |
| 3. Blower motor | BLOWER MOTOR | |
| 4. Wire harness or connector | - | |
| Airflow Control: Blower motor does not change speed | 1. Blower resistor | BLOWER RESISTOR |
| 2. Blower motor | BLOWER MOTOR | |
| 3. Heater control (blower switch) | HEATER RELAY | |
| Temperature Control: No cool air comes out | 1. Refrigerant volume | - |
| 2. Refrigerant pressure | - | |
| 3. Air conditioning pressure sensor circuit | DTC B1423/23 PRESSURE SENSOR CIRCUIT | |
| 4. Heater control base (A/C switch) | AIR CONDITIONING SYSTEM AIR CONDITIONING CONTROL ASSEMBLY (FOR MANUAL AIR CONDITIONING SYSTEM) | |
| 5. Compressor and pulley (For 2AZ-FE) | COMPRESSOR AND PULLEY (FOR 2AZ-FE) | |
| 6. Compressor and magnetic clutch (For 2GR-FE) | COMPRESSOR AND PULLEY (FOR 2GR-FE) | |
| 7. Compressor circuit | COMPRESSOR CIRCUIT | |
| 8. Expansion valve | - | |
| 9. Air conditioning amplifier | AIR CONDITIONING UNIT | |
| 10. ECM (For 2AZ-FE) | ENGINE CONTROL SYSTEM (2AZ-FE) | |
| 11. ECM (For 2GR-FE) | ENGINE CONTROL SYSTEM (2GR-FE) | |
| 12. CAN communication | CAN COMMUNICATION SYSTEM | |
| A/C compressor does not operate | 1. ECU-IG2 fuse | - |
| 2. Refrigerant pressure | - | |
| 3. Compressor and pulley (For 2AZ-FE) | COMPRESSOR AND PULLEY (FOR 2AZ-FE) | |
| 4. Compressor and magnetic clutch (For 2GR-FE) | COMPRESSOR AND PULLEY (FOR 2GR-FE) | |
| 5. Air conditioning pressure sensor circuit | DTC B1423/23 PRESSURE SENSOR CIRCUIT | |
| 6. Evaporator temperature sensor circuit | DTC B1413/13 EVAPORATOR TEMPERATURE SENSOR CIRCUIT | |
| 7. Air conditioning amplifier | AIR CONDITIONING UNIT | |
| 8. ECM (For 2AZ-FE) | ENGINE CONTROL SYSTEM (2AZ-FE) | |
| 9. ECM (For 2GR-FE) | ENGINE CONTROL SYSTEM (2GR-FE) | |
| 10. CAN communication | CAN COMMUNICATION SYSTEM | |
| Engine idle up does not occur, or is continuous | 1. Compressor circuit | COMPRESSOR CIRCUIT |
| 2. ECM (For 2AZ-FE) | ENGINE CONTROL SYSTEM (2AZ-FE) | |
| 3. ECM (For 2GR-FE) | ENGINE CONTROL SYSTEM (2GR-FE) |