AIR CONDITIONING SYSTEM (for Manual 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.

Air Conditioning System
Symptom	Suspected Area	See page
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	Click here
Air Flow Control: No blower operation.	Blower motor circuit	Click here
Air Flow Control: No blower operation.	Air conditioning amplifier	Click here
Air Flow Control: No blower control.	Blower motor circuit	Click here
Air Flow Control: No blower control.	Air conditioning amplifier	Click here
Air Flow Control: Insufficient air flow.	Blower motor circuit	Click here
Air Flow Control: Insufficient air flow.	Air conditioning amplifier	Click here
Temperature Control: No cool air comes out.	Refrigerant volume	Click here
	Refrigerant pressure	Click here
	Air conditioning pressure sensor	Click here
	Compressor solenoid circuit	Click here
	Air Conditioning Compressor (for 1KR-FE)	Click here
	Air Conditioning Compressor (for 1NR-FE)	Click here
	Air Conditioning Compressor (for 1ND-TV)	Click here
	Evaporator temperature sensor circuit	Click here
	Ambient temperature sensor circuit	Click here
	Heater control switch circuit	Click here
	Air mix damper control cable	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
Temperature Control: No warm air comes out.	Evaporator temperature sensor circuit	Click here
	Ambient temperature sensor circuit	Click here
	Engine coolant temperature sensor circuit (for 1KR-FE)	Click here
	Engine coolant temperature sensor circuit (for 1NR-FE)	Click here
	Engine coolant temperature sensor circuit (for 1ND-TV)	Click here
	PTC heater circuit*	Click here
	Headlight signal circuit*	Click here
	Generator signal circuit*	Click here
	No. 3 heater control (Max hot switch)*	Click here
	Air mix damper control cable	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 the set temperature or response is slow.	Refrigerant volume	Click here
	Refrigerant pressure	Click here
	Ambient temperature sensor circuit	Click here
	Engine coolant temperature sensor circuit (for 1KR-FE)	Click here
	Engine coolant temperature sensor circuit (for 1NR-FE)	Click here
	Engine coolant temperature sensor circuit (for 1ND-TV)	Click here
	Air mix damper control cable	Click here
	Radiator unit sub-assembly	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. hot).	Ambient temperature sensor circuit	Click here
	Evaporator temperature sensor circuit	Click here
	Heater control switch circuit	Click here
	Engine coolant temperature sensor circuit (for 1KR-FE)	Click here
	Engine coolant temperature sensor circuit (for 1NR-FE)	Click here
	Engine coolant temperature sensor circuit (for 1ND-TV)	Click here
	Air mix damper control cable	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
No air inlet control.	Air inlet damper control cable	Click here
No air flow mode control.	Defroster damper control cable	Click here
Engine idle speed increase does not occur, or is continuous.	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
A/C indicator blinking.	Compressor solenoid circuit	Click here
A/C indicator blinking.	Air conditioning amplifier	Click here
Cooling fan motor does not operate.	Cooling fan system (for 1KR-FE)	Click here
	Cooling fan system (for 1NR-FE)	Click here
	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.	Air conditioning amplifier	Click here

*: w/ PTC Heater