Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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
| Symptom | Suspected Area | Refer To |
|---|---|---|
| All functions of the A/C system do not operate | IG power source circuit | Refer to IG Power Source Circuit |
| Back-up power source circuit | Refer to Back-up Power Source Circuit | |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| Air Flow Control: No blower operation | Blower motor circuit | Refer to Blower Motor Circuit |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| Air Flow Control: No blower control | Blower motor circuit | Refer to Blower Motor Circuit |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| Air Flow Control: Insufficient air flow | Blower motor circuit | Refer to Blower Motor Circuit |
| A/C amplifier | Refer to REMOVAL | |
| Temperature Control: No cool air comes out | Refrigerant volume | Refer to ON-VEHICLE INSPECTION - Step 1 |
| Refrigerant pressure | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Pressure sensor circuit | Refer to DTC B1423/23: Pressure Sensor Circuit | |
| Compressor solenoid circuit | Refer to DTC B1451/51: Compressor Solenoid Circuit | |
| Air mix control servo motor circuit (Driver side) | Refer to DTC B1446/46: Air Mix Damper Control Servo Motor Circuit (Driver Side) | |
| Air mix control servo motor circuit (Passenger side) | Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) | |
| Evaporator temperature sensor circuit | Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit | |
| Room temperature sensor circuit | Refer to DTC B1411/11: Room Temperature Sensor Circuit | |
| Ambient temperature sensor circuit | Refer to DTC B1412/12: Ambient Temperature Sensor Circuit | |
| Expansion valve | Refer to DISASSEMBLY - Step 3 | |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| ECM | Refer to REMOVAL | |
| Temperature Control: No warm air comes out | Air mix control servo motor circuit (Driver side) | Refer to DTC B1446/46: Air Mix Damper Control Servo Motor Circuit (Driver Side) |
| Air mix control servo motor circuit (Passenger side) | Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) | |
| Evaporator temperature sensor circuit | Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit | |
| Room temperature sensor circuit | Refer to DTC B1411/11: Room Temperature Sensor Circuit | |
| Ambient temperature sensor circuit | Refer to DTC B1412/12: Ambient Temperature Sensor Circuit | |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| ECM | Refer to REMOVAL | |
| Temperature Control: Output air is warmer or cooler than the set temperature or response is slow. | Refrigerant volume | Refer to ON-VEHICLE INSPECTION - Step 1 |
| Refrigerant pressure | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Solar sensor circuit (Driver side) | Refer to DTC B1424/24: Solar Sensor Circuit (Driver Side) | |
| Solar sensor circuit (Passenger side) | Refer to DTC B1421/21: Solar Sensor Circuit (Passenger Side) | |
| Room temperature sensor circuit | Refer to DTC B1411/11: Room Temperature Sensor Circuit | |
| Ambient temperature sensor circuit | Refer to DTC B1412/12: Ambient Temperature Sensor Circuit | |
| Air mix control servo motor circuit (Driver side) | Refer to DTC B1446/46: Air Mix Damper Control Servo Motor Circuit (Driver Side) | |
| Air mix control servo motor circuit (Passenger side) | Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) | |
| Cool air bypass damper control servo motor circuit | Refer to DTC B1445/45: Front Passenger Seat Side Cool Air Bypass Damper Control Servo Motor Circuit | |
| Air inlet control servo motor circuit | Refer to DTC B1442/42: Air Inlet Damper Control Servo Motor Circuit | |
| Radiator unit sub-assembly | Refer to DISASSEMBLY - Step 7 | |
| Expansion valve | Refer to DISASSEMBLY - Step 3 | |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| ECM | Refer to REMOVAL | |
| Temperature control: No temperature control (only Max. cool or Max. warm) | Air mix control servo motor circuit (Driver side) | Refer to DTC B1446/46: Air Mix Damper Control Servo Motor Circuit (Driver Side) |
| Air mix control servo motor circuit (Passenger side) | Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) | |
| Cool air bypass damper servo motor circuit | Refer to DTC B1445/45: Front Passenger Seat Side Cool Air Bypass Damper Control Servo Motor Circuit | |
| Room temperature sensor circuit | Refer to DTC B1411/11: Room Temperature Sensor Circuit | |
| Ambient temperature sensor circuit | Refer to DTC B1412/12: Ambient Temperature Sensor Circuit | |
| Evaporator temperature sensor circuit | Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit | |
| Solar sensor circuit (Driver side) | Refer to DTC B1424/24: Solar Sensor Circuit (Driver Side) | |
| Solar sensor circuit (Passenger side) | Refer to DTC B1421/21: Solar Sensor Circuit (Passenger Side) | |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| No air inlet control | Air inlet control servo motor circuit | Refer to DTC B1442/42: Air Inlet Damper Control Servo Motor Circuit |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| No air flow mode control | Air outlet control servo motor circuit | Refer to DTC B1443/43: Air Outlet Damper Control Servo Motor Circuit |
| Integration control and panel assembly*1 | Refer to REMOVAL | |
| Multi-display*2 | Refer to REMOVAL | |
| A/C amplifier | Refer to REMOVAL | |
| Engine idle up does not occur, or is continuous | Compressor solenoid circuit | Refer to DTC B1451/51: Compressor Solenoid Circuit |
| A/C amplifier | Refer to REMOVAL | |
| Blinking of A/C indicator | Compressor solenoid circuit | Refer to DTC B1451/51: Compressor Solenoid Circuit |
| A/C amplifier | Refer to REMOVAL | |
| Diagnostic trouble codes are not recorded. Set mode is cleared when engine switch is off. | Back-up power source circuit | Refer to Back-up Power Source Circuit |
| A/C amplifier | Refer to REMOVAL |
- *1: w/o Multi-display
- *2: w/ Multi-display