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

Tip:

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.

Table 1. Air Conditioning System (for Manual Air Conditioning System)
Symptom	Suspected Area	Link
All functions of the A/C system do not operate	IG power source circuit	Click here
All functions of the A/C system do not operate	Air conditioning amplifier assembly	Click here
Air flow control: No blower operation	Blower motor circuit	Click here
Air flow control: No blower operation	Air conditioning amplifier assembly	Click here
Air flow control: No blower control	Blower motor circuit	Click here
Air flow control: No blower control	Air conditioning amplifier assembly	Click here
Air flow control: Insufficient air flow	Blower motor circuit	Click here
Air flow control: Insufficient air flow	Air conditioning amplifier assembly	Click here
Temperature control: Cooling effectiveness is poor	Refrigerant shortage check using the GTS	Click here
	Refrigerant volume	-
	Refrigerant pressure*7	Click here
	Refrigerant pressure*8	Click here
	Cooler expansion valve	Click here Click here
	Compressor assembly with pulley*1	Click here
	Compressor assembly with pulley*2	Click here
	Compressor assembly with pulley*3	Click here
	Compressor assembly with pulley*4	Click here
	Compressor assembly with pulley*5	Click here
	Air conditioning amplifier assembly	Click here
Temperature control: No cool air comes out	Refrigerant shortage check using the GTS	Click here
	Refrigerant volume	-
	Refrigerant pressure*7	Click here
	Refrigerant pressure*8	Click here
	Air mix damper control cable sub-assembly	Click here
	Heater control switch circuit	Click here
	Air conditioning pressure sensor circuit	Click here
	Compressor solenoid circuit	Click here
	Evaporator temperature sensor circuit	Click here
	Ambient temperature sensor circuit	Click here
	Cooler expansion valve	Click here Click here
	Air conditioning amplifier assembly	Click here
	ECM*1	Click here
	ECM*2	Click here
	ECM*3	Click here
	ECM*4	Click here
	ECM*5	Click here
Temperature control: No warm air comes out	Air mix damper control cable sub-assembly	Click here
	Heater control switch circuit	Click here
	Ambient temperature sensor circuit	Click here
	PTC heater circuit*6	Click here
	Air conditioning amplifier assembly	Click here
	ECM*1	Click here
	ECM*2	Click here
	ECM*3	Click here
	ECM*4	Click here
	ECM*5	Click here
Temperature control: Output air is warmer or cooler than the set temperature or response is slow	Refrigerant shortage check using the GTS	Click here
	Refrigerant volume	-
	Refrigerant pressure*7	Click here
	Refrigerant pressure*8	Click here
	Air mix damper control cable sub-assembly	Click here
	Compressor solenoid circuit	Click here
	Ambient temperature sensor circuit	Click here
	Heater radiator unit sub-assembly	Click here
	PTC heater circuit*6	Click here
	Cooler expansion valve	Click here Click here
	Air conditioning amplifier assembly	Click here
	ECM*1	Click here
	ECM*2	Click here
	ECM*3	Click here
	ECM*4	Click here
	ECM*5	Click here
Temperature control: No temperature control (only max. cool or max. warm)	Heater control switch circuit	Click here
	Air mix damper control cable sub-assembly	Click here
	Ambient temperature sensor circuit	Click here
	Evaporator temperature sensor circuit	Click here
	Air conditioning amplifier assembly	Click here
No air inlet control	Recirculation damper servo motor circuit	Click here
No air inlet control	Air conditioning amplifier assembly	Click here
No air flow mode control	No. 1 heater control sub-assembly	Click here
No air flow mode control	No. 2 heater control cable sub-assembly	Click here
Quick heater assembly does not operate*6	PTC heater circuit	Click here
Quick heater assembly does not operate*6	Air conditioning amplifier assembly	Click here
Diagnostic Trouble Codes (DTCs) are not recorded. Set mode is cleared when the ignition switch is turned off	Air conditioning amplifier assembly	Click here

*1: for 1NR-FE
*2: for 1ZR-FAE
*3: for 2ZR-FE
*4: for 1ZR-FE
*5: for 1ND-TV
*6: w/ PTC Heater
*7: for HFC-134a (R134a)
*8: for HFO-1234yf (R1234yf)