AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) > PROBLEM SYMPTOMS TABLE

for Preparation Click here

HINT:

Use the table below to help determine the causes of the problem symptom. If multiple suspected areas are listed, the potential cases 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.


Symptom	Suspected Area	See page
No functions of air conditioning panel operate	LIN communication line	Click here
	Air conditioning control panel circuit	Click here
	Air conditioning amplifier	Click here
No functions of air conditioning system operate	IG power source circuit	Click here
	Back-up power source circuit	Click here
	Air conditioning control panel circuit	Click here
	Air conditioning amplifier	Click here
Airflow Control: No blower control (Blower motor does not operate)	Blower motor circuit	Click here
	Air conditioning control panel circuit	Click here
	Air conditioning amplifier	Click here
Airflow Control: No blower control (Blower motor does not change speed)	Blower motor circuit	Click here
	Air conditioning control panel circuit	Click here
	Air conditioning amplifier	Click here
Temperature Control: No cool air comes out	Refrigerant volume	Click here
	Refrigerant pressure	Click here
	Air conditioning pressure sensor circuit	Click here
	Compressor solenoid circuit	Click here
	Air conditioning compressor magnetic clutch circuit	Click here
	Flow sensor circuit	Click here
	Air mix damper control servo motor circuit	Click here
	Evaporator temperature sensor circuit	Click here
	Room temperature sensor circuit	Click here
	Ambient temperature sensor circuit	Click here
	Air conditioning control panel circuit	Click here
	Expansion valve	Click here
	Air conditioning amplifier	Click here
	ECM (for 1KR-FE)	Click here
	ECM (for 1NR-FE)	Click here
	ECM (for 1ND-TV)	Click here
	CAN communication system	Click here
Temperature Control: No warm air comes out	Air mix damper control servo motor circuit	Click here
	Air conditioning harness	Click here
	Evaporator temperature sensor circuit	Click here
	Room temperature sensor circuit	Click here
	Ambient temperature sensor circuit	Click here
	Air conditioning control panel circuit	Click here
	Air conditioning amplifier	Click here
	ECM (for 1KR-FE)	Click here
	ECM (for 1NR-FE)	Click here
	ECM (for 1ND-TV)	Click here
	CAN communication system	Click here
Temperature Control: Output air is warmer or cooler than set temperature	Refrigerant volume	Click here
	Refrigerant pressure	Click here
	Solar sensor circuit	Click here
	Room temperature sensor circuit	Click here
	Ambient temperature sensor circuit	Click here
	Air mix damper control servo motor circuit	Click here
	Air inlet damper control servo motor circuit	Click here
	Air conditioning control panel circuit	Click here
	Heater radiator unit	Click here
	Expansion valve	Click here
	Air conditioning amplifier	Click here
	ECM (for 1KR-FE)	Click here
	ECM (for 1NR-FE)	Click here
	ECM (for 1ND-TV)	Click here
	CAN communication system	Click here
Temperature Control: No temperature control (Only Max. cool or Max. warm)	Solar sensor circuit	Click here
	Air conditioning control panel circuit	Click here
	Air conditioning amplifier	Click here
	LIN communication line	Click here
Engine coolant does not warm up quickly when the engine is cold. (PTC heater does not operate)*	PTC heater circuit	Click here
	Air conditioning amplifier	Click here
No air inlet control	Air conditioning control panel circuit	Click here
	Air inlet damper control servo motor circuit	Click here
	Air conditioning amplifier	Click here
No air flow mode control	Air conditioning control panel circuit	Click here
	Air outlet damper control servo motor circuit	Click here
	Air conditioning amplifier	Click here
Engine idle up does not occur, or is continuous	Air conditioning compressor magnetic clutch circuit	Click here
	Compressor solenoid circuit	Click here
	Air conditioning amplifier	Click here
	ECM (for 1KR-FE)	Click here
	ECM (for 1NR-FE)	Click here
	ECM (for 1ND-TV)	Click here
	CAN communication system	Click here
Blinking of air conditioning indicator	Compressor solenoid circuit	Click here
	Air conditioning amplifier	Click here
	CAN communication system	Click here
Cooling fan motor does not operate	Cooling fan system (for 1KR-FE)	Click here
	Cooling fan system (for 1NR-FE)	-
	Cooling fan system (for 1ND-TV)	Click here
	Air conditioning amplifier	Click here
Diagnostic trouble codes are not recorded. Set mode is cleared when ignition switch turned off.	Back-up power source circuit	Click here
	Air conditioning amplifier	Click here

*: w/ PTC Heater