PROBLEM SYMPTOMS TABLE
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HINT:
Symptom | Suspected Area | Link |
---|---|---|
All functions of the air conditioning system do not operate | IG power source circuit | |
Back-up power source circuit | | |
Air conditioning control panel circuit | | |
Air conditioning amplifier assembly | | |
Air flow Control: No blower operation | Blower motor circuit | |
Air conditioning control panel circuit | | |
Air conditioning amplifier assembly | | |
Air flow control: No blower control | Blower motor circuit | |
Air conditioning control panel circuit | | |
Air conditioning amplifier assembly | | |
Air flow control: Insufficient air flow | Blower motor circuit | |
Air conditioning amplifier assembly | | |
Temperature control: Cooling effectiveness is poor | Refrigerant shortage check using the Techstream | |
Refrigerant volume | - | |
Refrigerant pressure | | |
Cooler expansion valve | | |
Cooler compressor assembly | | |
Air conditioning amplifier assembly | | |
Temperature control: No cool air comes out | Refrigerant shortage check using the Techstream | |
Refrigerant volume | - | |
Refrigerant pressure | | |
Air conditioner pressure sensor circuit | | |
Air conditioning control panel circuit | | |
Air mix damper control servo motor circuit (for driver side) | | |
Air mix damper control servo motor circuit (for front passenger side) | | |
Evaporator temperature sensor circuit | | |
Room temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
Cooler expansion valve | | |
No. 1 air conditioning radiator damper servo sub-assembly (Driver side air mix) | | |
No. 1 air conditioning radiator damper servo sub-assembly (Front passenger side air mix) | | |
Air conditioning harness assembly | | |
Cooler compressor assembly | | |
Air conditioning amplifier assembly | | |
ECM | | |
Temperature control: No warm air comes out | Air conditioning control panel circuit | |
Air mix damper control servo motor circuit (for driver side) | | |
Air mix damper control servo motor circuit (for front passenger side) | | |
Evaporator temperature sensor circuit | | |
Room temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
PTC heater circuit*1 | | |
No. 1 air conditioning radiator damper servo sub-assembly (Driver side air mix) | | |
No. 1 air conditioning radiator damper servo sub-assembly (Front passenger side air mix) | | |
Air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
ECM | | |
Temperature control: Output air is warmer or cooler than the set temperature or response is slow | Refrigerant shortage check using the Techstream | |
Refrigerant volume | - | |
Refrigerant pressure | | |
Compressor solenoid circuit | | |
Room temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
Air conditioning control panel circuit | | |
Air mix damper control servo motor circuit (for driver side) | | |
Air mix damper control servo motor circuit (for front passenger side) | | |
Air inlet damper control servo motor circuit | | |
PTC heater circuit*1 | | |
Heater radiator unit sub-assembly | | |
Cooler expansion valve | | |
Automatic light control sensor | | |
No. 1 air conditioning radiator damper servo sub-assembly (Driver side air mix) | | |
No. 1 air conditioning radiator damper servo sub-assembly (Front passenger side air mix) | | |
No. 1 blower damper servo sub-assembly | | |
Air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
ECM | | |
Temperature control: No temperature control (only MAX COLD or MAX HOT) | Air conditioning control panel circuit | |
Air mix damper control servo motor circuit (for driver side) | | |
Air mix damper control servo motor circuit (for front passenger side) | | |
Room temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
Evaporator temperature sensor circuit | | |
Automatic light control sensor | | |
No. 1 air conditioning radiator damper servo sub-assembly (Driver side air mix) | | |
No. 1 air conditioning radiator damper servo sub-assembly (Front passenger side air mix) | | |
Air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
Temperature control: Output air temperature is different between left and right registers (the set temperature is the same for both) | Refrigerant shortage check using the Techstream | |
Refrigerant volume | - | |
Refrigerant pressure | | |
Air mix damper control servo motor circuit (for driver side) | | |
Air mix damper control servo motor circuit (for front passenger side) | | |
Automatic light control sensor | | |
No. 1 air conditioning radiator damper servo sub-assembly (Driver side air mix) | | |
No. 1 air conditioning radiator damper servo sub-assembly (Front passenger side air mix) | | |
Air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
No air inlet control | Air conditioning control panel circuit | |
Air inlet damper control servo motor circuit | | |
No. 1 blower damper servo sub-assembly | | |
Air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
No air flow mode control | Air conditioning control panel circuit | |
Air outlet damper control servo motor circuit (for driver side) | | |
Air outlet damper control servo motor circuit (for front passenger side) | | |
No. 3 air conditioning radiator damper servo sub-assembly (Driver side mode) | | |
No. 1 air conditioning radiator damper servo sub-assembly (Front passenger side mode) | | |
Air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
Auto recirculation control function does not operate normally*2 | Smog ventilation sensor circuit (for HC, CO) | |
Smog ventilation sensor circuit (for NOx) | | |
Room temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
Air inlet damper control servo motor circuit | | |
Air conditioning control panel circuit | | |
No. 1 blower damper servo sub-assembly | | |
Air conditioning harness assembly | | |
Radio receiver assembly (A/C control panel) | | |
Air conditioning amplifier assembly | | |
Quick heater assembly does not operate*1 | PTC heater circuit | |
Air conditioning amplifier assembly | | |
Combination switch assembly (ECO mode switch) does not operate normally | ECO switch circuit | |
Air conditioning amplifier assembly | | |
Diagnostic trouble codes (DTCs) are not recorded. Set mode is cleared when the engine switch is turned off | Back-up power source circuit | |
Air conditioning amplifier assembly | |
Symptom | Suspected Area | Link |
---|---|---|
All functions of the rear air conditioning system do not operate | IG power source circuit | |
Back-up power source circuit | | |
No. 2 air conditioning control assembly circuit | | |
Air conditioning amplifier assembly | | |
Air flow control: No blower operation | Rear blower motor circuit | |
No. 2 air conditioning control assembly circuit | | |
Air conditioning amplifier assembly | | |
Air flow control: No blower control | Rear blower motor circuit | |
No. 2 air conditioning control assembly circuit | | |
Air conditioning amplifier assembly | | |
Air flow control: Insufficient air flow | Rear blower motor circuit | |
Air conditioning amplifier assembly | | |
Temperature control: No cool air comes out | Refrigerant shortage check using the Techstream | |
Refrigerant volume | - | |
Refrigerant pressure | | |
Air conditioner pressure sensor circuit | | |
No. 2 air conditioning control assembly circuit | | |
Rear No. 2 cooling unit damper servo sub-assembly circuit | | |
Rear evaporator temperature sensor circuit | | |
Cooler (No. 2 room temp. sensor) thermistor circuit | | |
Ambient temperature sensor circuit | | |
Rear cooling unit expansion valve | | |
Rear No. 2 cooling unit damper servo sub-assembly | | |
No. 2 air conditioning harness assembly | | |
Cooler compressor assembly | | |
Air conditioning amplifier assembly | | |
ECM | | |
Temperature control: No warm air comes out | No. 2 air conditioning control assembly circuit | |
Rear No. 2 cooling unit damper servo sub-assembly circuit | | |
Rear evaporator temperature sensor circuit | | |
Cooler (No. 2 room temp. sensor) thermistor circuit | | |
Ambient temperature sensor circuit | | |
Rear No. 2 cooling unit damper servo sub-assembly | | |
No. 2 air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
ECM | | |
Temperature control: Output air is warmer or cooler than the set temperature or response is slow | Refrigerant shortage check using the Techstream | |
Refrigerant volume | - | |
Refrigerant pressure | | |
Automatic light control sensor | | |
Cooler (No. 2 room temp. sensor) thermistor circuit | | |
Rear evaporator temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
No. 2 air conditioning control assembly circuit | | |
Rear No. 2 cooling unit damper servo sub-assembly circuit | | |
Rear air conditioning unit assembly | | |
Rear cooling unit expansion valve | | |
Rear No. 2 cooling unit damper servo sub-assembly | | |
No. 2 air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
ECM | | |
Temperature control: No temperature control (only MAX COLD or MAX HOT) | No. 2 air conditioning control assembly circuit | |
Rear No. 2 cooling unit damper servo sub-assembly circuit | | |
Rear evaporator temperature sensor circuit | | |
Ambient temperature sensor circuit | | |
Automatic light control sensor | | |
Rear No. 2 cooling unit damper servo sub-assembly | | |
No. 2 air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
No air flow mode control | No. 2 air conditioning control assembly circuit | |
Rear No. 1 cooling unit damper servo sub-assembly circuit | | |
No. 2 air conditioning harness assembly | | |
Air conditioning amplifier assembly | | |
Diagnostic Trouble Codes (DTCs) are not recorded. Set mode is cleared when the engine switch is turned off | Back-up power source circuit | |
Air conditioning amplifier assembly | |
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