Problem Symptoms Table
WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.
Check the suspected areas for each problem symptom in the order given in PROBLEM SYMPTOMS TABLE and proceed to the relevant reference.
HINT:
Inspect the fuses and relays before inspecting the suspected areas shown in PROBLEM SYMPTOMS TABLE .
If the malfunction still exists even after checking and confirming that all the suspected areas are normal, replace the A/C amplifier.
PROBLEM SYMPTOMS TABLE
| Symptom | Suspected area | Reference |
|---|---|---|
No Cool Air Comes Out:
|
A/C fuse | - |
| Volume of refrigerant | REFRIGERANT | |
| Pressure switch | PRESSURE SWITCH | |
| Magnetic clutch | MAGNETIC CLUTCH RELAY | |
| Cooler thermistor sensor | EVAPORATOR TEMPERATURE SENSOR | |
| Air conditioner amplifier assembly | AIR CONDITIONING AMPLIFIER | |
| Compressor pick up sensor | MAGNETIC CLUTCH RELAY | |
| Cooler compressor | COMPRESSOR AND MAGNETIC CLUTCH | |
| Cooler compressor | COMPRESSOR AND MAGNETIC CLUTCH | |
| Wire harness or connector | - | |
No Cool Air Comes Out:
|
HTR fuse | - |
| Heater relay | HEATER RELAY | |
| Blower resistor | BLOWER RESISTOR | |
| Blower motor | BLOWER MOTOR | |
| Blower speed control switch | AIR CONDITIONING CONTROL ASSEMBLY | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
No Cool Air Comes Out:
|
Air mix damper fuse | - |
| Air mix control servo motor | SERVO MOTOR | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
No Cool Air Comes Out:
|
Volume of refrigerant | REFRIGERANT |
| Blower motor performance check | - | |
| Air mix damper servo full travel check | - | |
| Recirculation damper servo operation check | - | |
| No Engine Idle-up when A/C Switch ON | Air conditioner amplifier assembly | AIR CONDITIONING AMPLIFIER |
| Idling control system (2TR-FE) | DTC P0505 IDLE CONTROL SYSTEM MALFUNCTION | |
| Idling control system (1GR-FE) | DTC P0505 IDLE CONTROL SYSTEM MALFUNCTION | |
| Wire harness or connector | - | |
No Warm Air Comes Out:
|
HTR fuse | - |
| Heater relay | HEATER RELAY | |
| Blower resistor | BLOWER RESISTOR | |
| Blower motor | BLOWER MOTOR | |
| Blower speed control switch | AIR CONDITIONING CONTROL ASSEMBLY | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
No Warm Air Comes Out:
|
Air mix damper fuse | - |
| Air mix control servo motor | SERVO MOTOR | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
No Warm Air Comes Out:
|
Volume of engine coolant | - |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Blower motor performance check | - | |
| Air mix damper servo full travel check | - | |
| Recirculation damper servo operation check | - | |
| Heater radiator | - | |
Air Not Coming From Desired Outlets:
|
HTR fuse | - |
| Heater relay | HEATER RELAY | |
| Blower resistor | BLOWER RESISTOR | |
| Blower motor | BLOWER MOTOR | |
| Blower speed control switch | AIR CONDITIONING CONTROL ASSEMBLY | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
Air Not Coming From Desired Outlets:
|
Air mix damper fuse | - |
| Air mix control servo motor | SERVO MOTOR | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
Windshield Fogging:
|
A/C fuse | - |
| Volume of refrigerant | REFRIGERANT | |
| Pressure switch | PRESSURE SWITCH | |
| Magnetic clutch | MAGNETIC CLUTCH RELAY | |
| Cooler thermistor sensor | EVAPORATOR TEMPERATURE SENSOR | |
| Air conditioner amplifier assembly | AIR CONDITIONING AMPLIFIER | |
| Compressor pick up sensor | MAGNETIC CLUTCH RELAY | |
| Cooler compressor | COMPRESSOR AND MAGNETIC CLUTCH | |
| Cooler compressor | COMPRESSOR AND MAGNETIC CLUTCH | |
| Wire harness or connector | - | |
Windshield Fogging:
|
HTR fuse | - |
| Heater relay | HEATER RELAY | |
| Blower resistor | BLOWER RESISTOR | |
| Blower motor | BLOWER MOTOR | |
| Blower speed control switch | AIR CONDITIONING CONTROL ASSEMBLY | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
Windshield Fogging:
|
Air mix damper fuse | - |
| Air mix control servo motor | SERVO MOTOR | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY | |
| Wire harness or connector | - | |
Windshield Fogging:
|
Volume of refrigerant | REFRIGERANT |
| Blower motor performance check | - | |
| Air mix damper servo full travel check | - | |
| Recirculation damper servo operation check | - | |
Defrosting Insufficient:
|
Blower motor | BLOWER MOTOR |
| Mode doors: Check cooling, heating & door operation | - | |
| Mode control servo motor: Hot air not coming, Go to no hot air comes out | - | |
| Mode control servo motor: Cold air not coming, Go to no cold air comes out | - | |
Noise:
|
Blower motor: Inspect blower motor for debris/cracks | - |
| Fresh air intake area: Inspect fresh air intake area for debris | - | |
Noise:
|
Cooler compressor: Cooler compressor incorrectly fitted | COMPRESSOR AND MAGNETIC CLUTCH |
| Magnetic clutch | MAGNETIC CLUTCH RELAY | |
| Refrigerant charge amount | REFRIGERANT LINE | |
| Compressor mounting bracket: Compressor mounting bracket incorrectly fitted (2TR-FE) | INSPECTION | |
| Compressor mounting bracket: Compressor mounting bracket incorrectly fitted (1GR-FE {(2WD}) | INSTALLATION | |
| Compressor mounting bracket: Compressor mounting bracket incorrectly fitted (1GR-FE {PRE RUNNER/4WD}) | INSTALLATION | |
| A/C lines secure & not grounded | - | |
| Odor (Cycle through blower speed, mode, temperature to define odor type when engine is running and A/C switch is ON. (Musty smell, coolant oil smell)) | Wet carpet: Inspect water, engine coolant or oil leaks | - |
| A/C drain tube: Inspect water, engine coolant or oil leaks | - | |
| Fresh air intake area: Inspect water, engine coolant or oil leaks | - | |
| Heater hose: Inspect water, engine coolant or oil leaks | - | |
| Evaporator: Inspect water, engine coolant or oil leaks | - | |
| EVAP case: Inspect water, engine coolant or oil leaks | - | |
| Air Not Coming from Desired Outlets (Cycle the mode lever and check airflow for outlets when engine is running, A/C switch is ON.) | Blower motor | BLOWER MOTOR |
| Mode control servo motor | SERVO MOTOR | |
| Mode doors: Check cooling, heating & door operation | - | |
| Wire harness or connector | - | |
| Air conditioning control assembly | AIR CONDITIONING CONTROL ASSEMBLY |