Symptom | Probable cause | Recommendation |
On ignition "ON", A/C doesn't work | Damage on heater control panel. | Replace the heater control panel. |
Open of short circuit harness wire. | Repair harness wire. | |
Damage in the A/C control module. | Replace the A/C control module. | |
On A/C "ON", the inside temperature doesn't rise | Damage on input circuit of in-car sensor. | Check self-diagnosis and/replace damaged parts. |
Damage on input circuit ambient sensor. | ||
Damage on input circuit of photo sensor. | ||
Damage on input circuit of temp. actuator potentiometer. | ||
Damage on blend door actuator. | Replace blend door actuator. | |
Sticking of blend door. | Replace or repair blend door. | |
Open of short circuit between temp. actuator potentiometer and A/C control module. | Repair or replace harness | |
Damage on A/C control module. | Replace heater control module. | |
Damage on A/C control module. | Replace heater control module. | |
Damage of compressor relay in relay box. | Replace the relay. | |
Refrigerant leak. | Charge refrigerant or repair leaks. | |
Blower motor doesn't work | Damage on Hi-blower relay. | Replace |
Damage on blower motor. | ||
Blown out thermo-fuse in power TR. | Power TR. | |
Damage on Blower relay. | Repair or replace circuit. | |
Short or open circuit blower relay or blower motor. | ||
Short or open circuit between fuse in the engine relay & fuse box and blower relay. | ||
Short or open circuit between power TR and A/C control module. | ||
Damage on heater control panel. | Replace heater. | |
Damage on A/C control module. | Replace A/C control module. | |
Blower motor doesn't stop | Damage on Hi-blower relay. | Replace Hi-blower relay. |
Damage on power TR. | Damage power TR. | |
Short or open circuit from Hi-blower to power TR and A/C control module. | Repair circuit. | |
Damage on heater control panel. | Replace | |
Damage in the A/C control module. | ||
Air-mixing actuator in the blend door actuator doesn't work | Damage on blend door actuator for air-mixing. | Replace blend door actuator. |
Damage on linkage or damper between outside mode and recycle mode. | Repair linkage or damper. | |
Open or short circuit between blend door actuator and A/C control module. | Replace circuit. | |
Damage on heater control panel. | Replace heater control panel. | |
Damage on A/C control module. | Replace heater control panel. | |
Mode door actuator doesn't work | Damage on input circuit or In-car sensor. | Replace ambient sensor. |
Damage on mode door actuator. | Replace mode door sensor. | |
Damage on mode door actuator linkage. | ||
Open or short circuit between mode door actuator and A/C control module. | Replace or repair circuit. | |
Damage on heater control panel. | Replace or repair heater control panel. | |
Damage on A/C control module. | Replace A/C control module. | |
On A/C switch "ON" condenser fan doesn't rotate | Damage on condenser fan relay. | Replace or repair condenser fan relay. |
Damage on condenser fan resistor. | Replace or repair condenser fan resistor. | |
Damage on condenser fan motor. | Replace or repair condenser fan motor. | |
On ignition S/W "ON" or "OFF", the temperature is set to 25°C | Damage on power TR circuit. | Replace power TR. |
Damage on A/C control module. | Replace A/C control module. |
