RM3660EC _58 Vehicle Interior _080733 HEATING / AIR CONDITIONING _0591216 AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Mechanical Control Type) U

HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Mechanical Control Type) TERMINALS OF ECU

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

3.438,0.188 3.875,0.417 0.438,0.229 3.542,0.219 4,0.417 0.458,0.198 10 false I162

HINT:: Check from the rear of the connector while it is connected to the air conditioning amplifier assembly.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
I162-1 (B) - I162-27 (GND)	LG - W-B	Power source (Back-up)	Always	11 to 14 V
I162-4 (LED) - I162-27 (GND)	GR - W-B	A/C switch indicator signal	· Ignition switch ON · A/C switch: On · Blower switch: On	Below 1 V
I162-4 (LED) - I162-27 (GND)	GR - W-B	A/C switch indicator signal	· Ignition switch ON · A/C switch: Off · Blower switch: On	11 to 14 V
I162-7 (AIF) - I162-27 (GND)	R - W-B	Recirculation/fresh motor signal	· Ignition switch ON · Recirculation/fresh switch: On	Below 1 V
I162-7 (AIF) - I162-27 (GND)	R - W-B	Recirculation/fresh motor signal	· Ignition switch ON · Recirculation/fresh switch: Off	11 to 14 V
I162-8 (PTC2) - I162-27 (GND)	B - W-B	Quick heater assembly operation signal	· Ignition switch ON · Temperature setting: MAX HOT · Ambient temperature: 10°C (50°F) or lower · Engine coolant temperature: 72°C (162°F) or lower · Blower switch: On	Below 1 V
I162-8 (PTC2) - I162-27 (GND)	B - W-B	Quick heater assembly operation signal	· Ignition switch ON · Temperature setting: MAX HOT · Ambient temperature: 10°C (50°F) or lower · Engine coolant temperature: 72°C (162°F) or lower · Blower switch: Off	11 to 14 V
I162-9 (CANH) - I162-26 (CANL)	G - W	CAN communication system	CAN communication is performed	Pulse generation
I162-11 (S5-3) - I162-12 (SG-4)	L - GR	Power supply for air conditioner pressure sensor	Ignition switch ON	4.75 to 5.25 V
I162-11 (S5-3) - I162-12 (SG-4)	L - GR	Power supply for air conditioner pressure sensor	Ignition switch off	Below 1 V
I162-13 (TE) - I162-14 (SG-3)	LG - W	No. 1 cooler thermistor signal	· Ignition switch ON · Evaporator temperature: 0°C (32°F)	1.7 to 2.1 V
I162-13 (TE) - I162-14 (SG-3)	LG - W	No. 1 cooler thermistor signal	· Ignition switch ON · Evaporator temperature: 15°C (59°F)	0.9 to 1.3 V
I162-15 (SBLW) - I162-27 (GND)	GR - W-B	Blower motor operation condition signal	· Ignition switch ON · Blower switch: On	Below 1 V
I162-15 (SBLW) - I162-27 (GND)	GR - W-B	Blower motor operation condition signal	· Ignition switch ON · Blower switch: Off	11 to 14 V
I162-17 (DEF) - I162-27 (GND)	R - W-B	Defogger sensing signal	· Ignition switch ON · Airflow mode control switch is set to DEF/FOOT or DEF: On	11 to 14 V
I162-17 (DEF) - I162-27 (GND)	R - W-B	Defogger sensing signal	· Ignition switch ON · Airflow mode control switch is set to FACE, FACE/FOOT or FOOT: Off	Below 1 V
I162-19 (IG+) - I162-27 (GND)	SB - W-B	Power source (IG)	Ignition switch ON	11 to 14 V
I162-19 (IG+) - I162-27 (GND)	SB - W-B	Power source (IG)	Ignition switch off	Below 1 V
I162-20 (SOL+) - I162-27 (GND)	B - W-B	Compressor solenoid operation signal	· Engine running · Blower switch: LO · A/C switch: On	Pulse generation (See waveform)
I162-21 (HR) - I162-27 (GND)	GR - W-B	HTR FR relay operation signal	· Ignition switch ON · Blower switch: LO	Below 1 V
I162-21 (HR) - I162-27 (GND)	GR - W-B	HTR FR relay operation signal	· Ignition switch ON · Blower switch: Off	11 to 14 V
I162-22 (LREC) - I162-27 (GND)	GR - W-B	Recirculation/fresh switch indicator signal	· Ignition switch ON · Recirculation/fresh switch: On	Below 1 V
I162-22 (LREC) - I162-27 (GND)	GR - W-B	Recirculation/fresh switch indicator signal	· Ignition switch ON · Recirculation/fresh switch: Off	11 to 14 V
I162-23 (AIR) - I162-27 (GND)	L - W-B	Recirculation/fresh motor signal	· Ignition switch ON · Recirculation/fresh switch: On	Below 1 V
I162-23 (AIR) - I162-27 (GND)	L - W-B	Recirculation/fresh motor signal	· Ignition switch ON · Recirculation/fresh switch: Off	11 to 14 V
I162-24 (PTC3) - I162-27 (GND)	BR - W-B	Quick heater assembly operation signal	· Ignition switch ON · Temperature setting: MAX HOT · Ambient temperature: 10°C (50°F) or lower · Engine coolant temperature: 68°C (154°F) or lower · Blower switch: On	Below 1 V
I162-24 (PTC3) - I162-27 (GND)	BR - W-B	Quick heater assembly operation signal	· Ignition switch ON · Temperature setting: MAX HOT · Ambient temperature: 10°C (50°F) or lower · Engine coolant temperature: 68°C (154°F) or lower · Blower switch: Off	11 to 14 V
I162-25 (PTC1) - I162-27 (GND)	W - W-B	Quick heater assembly operation signal	· Ignition switch ON · Temperature setting: MAX HOT · Ambient temperature: 10°C (50°F) or lower · Engine coolant temperature: 76°C (169°F) or lower · Blower switch: On	Below 1 V
I162-25 (PTC1) - I162-27 (GND)	W - W-B	Quick heater assembly operation signal	· Ignition switch ON · Temperature setting: MAX HOT · Ambient temperature: 10°C (50°F) or lower · Engine coolant temperature: 76°C (169°F) or lower · Blower switch: Off	11 to 14 V
I162-27 (GND) - Body ground	W-B - Body ground	Ground for main power supply	Always	Below 1 V
I162-30 (HEAT) - I162-27 (GND)	V - W-B	Max hot sensing signal	· Ignition switch ON · MAX HOT position	11 to 14 V
I162-30 (HEAT) - I162-27 (GND)	V - W-B	Max hot sensing signal	· Ignition switch ON · Other than MAX HOT position	Below 1 V
I162-31 (COOL) - I162-27 (GND)	R - W-B	Max cool sensing signal	· Ignition switch ON · MAX COOL position	11 to 14 V
I162-31 (COOL) - I162-27 (GND)	R - W-B	Max cool sensing signal	· Ignition switch ON · Other than MAX COOL position	Below 1 V
I162-32 (A/C) - I162-27 (GND)	Y - W-B	A/C switch signal	· Ignition switch ON · A/C switch: On	11 to 14 V
I162-32 (A/C) - I162-27 (GND)	Y - W-B	A/C switch signal	· Ignition switch ON · A/C switch: Off	Below 1 V
I162-33 (FR) - I162-27 (GND)	L - W-B	Recirculation/fresh switch signal	· Ignition switch ON · Recirculation/fresh switch: On	11 to 14 V
I162-33 (FR) - I162-27 (GND)	L - W-B	Recirculation/fresh switch signal	· Ignition switch ON · Recirculation/fresh switch: Off	Below 1 V
I162-34 (TAM) - I162-35 (SG-2)	R - BR	Thermistor assembly signal	· Ignition switch ON · Ambient temperature: 25°C (77°F)	1.05 to 1.45 V
I162-34 (TAM) - I162-35 (SG-2)	R - BR	Thermistor assembly signal	· Ignition switch ON · Ambient temperature: 40°C (104°F)	0.64 to 0.87 V
I162-36 (PRE) - I162-12 (SG-4)	B - GR	Air conditioner pressure sensor signal	· Ignition switch ON · Air conditioning system operating · Refrigerant pressure: Abnormal pressure (more than 3.025 MPaG (30.8 kgf/cm², 439 psi)	4.73 V or higher
			· Ignition switch ON · Air conditioning system operating · Refrigerant pressure: Abnormal pressure (less than 0.176 MPaG (1.8 kgf/cm², 26 psi))	Below 0.62 V
			· Ignition switch ON · Air conditioning system operating · Refrigerant pressure: Normal pressure (less than 3.025 MPaG (30.8 kgf/cm², 439 psi) and more than 0.176 MPaG (1.8 kgf/cm², 26 psi))	0.62 to 4.73 V
I162-39 (F/D) - I162-27 (GND)	L - W-B	Recirculation/fresh bilayer sensing signal	· Ignition switch ON · Airflow mode control switch is set to FOOT or DEF/FOOT: On	11 to 14 V
I162-39 (F/D) - I162-27 (GND)	L - W-B	Recirculation/fresh bilayer sensing signal	· Ignition switch ON · Airflow mode control switch is set to FACE, FACE/FOOT or DEF: Off	Below 1 V

2.979,1.271 3.354,1.438 0.375,0.167 10 false GND

Waveform:

Item	Content
Terminal No.	I162-20 (SOL+) - I162-27 (GND)
Tool Setting	5 V/DIV., 500 μs./DIV.
Condition	· Engine running · Blower switch: LO · A/C switch: On