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AIR CONDITIONING SYSTEM TERMINALS OF ECU

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  1. A0009HVN01

    AIR CONDITIONING AMPLIFIER ASSEMBLY

    Tip:

    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
    H54-1 (IG+) - H54-14 (GND) V - W-B Power source (IG) Power switch on (IG) 11 to 14 V
    H54-1 (IG+) - H54-14 (GND) V - W-B Power source (IG) Power switch off Below 1 V
    H54-3 (PTC2) - H54-14 (GND) L - W-B PTC heater assembly (quick heater assembly) operation signal

    • Power switch on (READY)

    • ECO mode switch (integration control and panel assembly) on

    • Blower motor off

    • Temperature setting: except MAX HOT

    • Engine coolant temperature 70°C or lower

    • Ambient temperature 10°C or lower

    • IDH terminal signal less than 1 V (Inverter with converter assembly overload not detected)

    		 11 to 14 V
    H54-3 (PTC2) - H54-14 (GND) L - W-B PTC heater assembly (quick heater assembly) operation signal

    • Power switch on (READY)

    • ECO mode switch (integration control and panel assembly) off

    • Blower motor on

    • Temperature setting: MAX HOT

    • Engine coolant temperature 70°C or lower

    • Ambient temperature 10°C or lower

    • IDH terminal signal less than 1 V (Inverter with converter assembly overload not detected)

    		 Below 1 V
    H54-4 (ECOS) - H54-14 (GND) SB - W-B ECO mode switch (integration control and panel assembly) signal

    • Power switch on (IG)

    • ECO mode switch (integration control and panel assembly) being turned and held at ECO position

    		 Below 1 V
    H54-4 (ECOS) - H54-14 (GND) SB - W-B ECO mode switch (integration control and panel assembly) signal

    • Power switch on (IG)

    • ECO mode switch (integration control and panel assembly) not turned

    		 11 to 14 V
    H54-5 (TAM) - H54-13 (SG-2) P - L Ambient temperature sensor signal

    • Power switch on (IG)

    • Ambient temperature: 25°C (77°F)

    		 1.35 to 1.75 V
    H54-5 (TAM) - H54-13 (SG-2) P - L Ambient temperature sensor signal

    • Power switch on (IG)

    • Ambient temperature: 40°C (104°F)

    		 0.9 to 1.2 V
    H54-6 (TFG) - H54-14 (GND) B - W-B Glass temperature signal

    • Power switch on (IG)

    • Glass temperature: 20°C (68°F)

    		 2.200 kΩ
    H54-7 (TNG) - H54-14 (GND) V - W-B Glass surroundings temperature signal

    • Power switch on (IG)

    • Glass surroundings temperature: 20°C (68°F)

    		 2.200 kΩ
    H54-9 (PRE) - H54-13 (SG-2)

    V - L*1

    SB - L*2

    		 Air conditioning pressure sensor signal

    • Power switch on (READY)

    • A/C system operating

    • Refrigerant pressure: Abnormal pressure (more than 3025 kPa (30.9 kgf/cm2, 439 psi))

    		 4.80 V or higher
    H54-9 (PRE) - H54-13 (SG-2)

    V - L*1

    SB - L*2

    		 Air conditioning pressure sensor signal

    • Power switch on (READY)

    • A/C system operating

    • Refrigerant pressure: Abnormal pressure (less than 176 kPa (1.8 kgf/cm2, 25 psi))

    		 Below 0.50 V
    H54-9 (PRE) - H54-13 (SG-2)

    V - L*1

    SB - L*2

    		 Air conditioning pressure sensor signal

    • Power switch on (READY)

    • A/C system operating

    • Refrigerant pressure: Normal pressure (less than 3025 kPa (30.9 kgf/cm2, 439 psi) and more than 176 kPa (1.8 kgf/cm2, 25 psi))

    		 0.50 to 4.80 V
    H54-10 (S5-3) - H54-13 (SG-2) BR - L Power supply for air conditioning pressure sensor Power switch on (IG) 4.75 to 5.25 V
    H54-10 (S5-3) - H54-13 (SG-2) BR - L Power supply for air conditioning pressure sensor Power switch off Below 1 V
    H54-11 (CANH) - H54-12 (CANL) G - W CAN communication system CAN communication occurring Pulse generation
    H54-13 (SG-2) - Body ground L - Body ground Ground for air conditioning pressure sensor, ambient temperature sensor, smog ventilation sensor Always Below 1 V
    H54-14 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 V
    H54-15 (NANO) - H54-14 (GND) R - W-B No. 1 ion generator sub-assembly operation signal

    • Power switch on (IG)

    • Blower switch: LO

    		 Below 1 V
    H54-15 (NANO) - H54-14 (GND) R - W-B No. 1 ion generator sub-assembly operation signal

    • Power switch on (IG)

    • Blower switch: off

    		 4.75 to 5.25 V
    H54-21 (B) - H54-14 (GND) GR - W-B Power source (Back-up) Power switch off 11 to 14 V
    H54-22 (BLW) - H54-14 (GND) R - W-B Blower motor speed control signal

    • Power switch on (IG)

    • Blower switch: LO

    Pulse generation

    (See waveform 1)
    H54-26 (NAIN) - H54-14 (GND) L - W-B No. 1 ion generator sub-assembly operation condition signal

    • Power switch on (IG)

    • Blower switch: LO

    		 Below 1 V
    H54-26 (NAIN) - H54-14 (GND) L - W-B No. 1 ion generator sub-assembly operation condition signal

    • Power switch on (IG)

    • Blower switch: off

    		 11 to 14 V
    H54-27 (IDH) - H54-14 (GND) V - W-B Inverter with converter assembly current over signal

    • Power switch on (IG)

    • Quick heater assembly operation permitted

    		 Below 1 V
    H54-27 (IDH) - H54-14 (GND) V - W-B Inverter with converter assembly current over signal

    • Power switch on (IG)

    • Quick heater assembly operation not permitted

    		 4.75 to 5.25 V
    H54-28 (RH) - H54-14 (GND) R - W-B Humidity sensor signal

    • Power switch on (IG)

    • Cabin temperature: 25°C (77°F)

    • Humidity: 40%

    		 2.09 V
    H54-28 (RH) - H54-14 (GND) R - W-B Humidity sensor signal

    • Power switch on (IG)

    • Cabin temperature: 25°C (77°F)

    • Humidity: 60%

    		 2.81 V
    H54-29 (TR) - H54-34 (SG-1) P - LG Room temperature sensor signal

    • Power switch on (IG)

    • Cabin temperature: 25°C (77°F)

    		 1.8 to 2.2 V
    H54-29 (TR) - H54-34 (SG-1) P - LG Room temperature sensor signal

    • Power switch on (IG)

    • Cabin temperature: 40°C (104°F)

    		 1.2 to 1.6 V
    H54-32 (TSP) - H54-14 (GND)

    Y - W-B*1

    BE - W-B*2

    		 Solar sensor signal (for front passenger side)

    • Power switch on (IG)

    • Solar sensor subjected to electric light

    		 0.8 to 4.3 V
    H54-32 (TSP) - H54-14 (GND)

    Y - W-B*1

    BE - W-B*2

    		 Solar sensor signal (for front passenger side)

    • Power switch on (IG)

    • Solar sensor covered with cloth

    		 Below 0.8 V
    H54-33 (TSD) - H54-14 (GND)

    BE - W-B*1

    Y - W-B*2

    		 Solar sensor signal (for driver side)

    • Power switch on (IG)

    • Solar sensor subjected to electric light

    		 0.8 to 4.3 V
    H54-33 (TSD) - H54-14 (GND)

    BE - W-B*1

    Y - W-B*2

    		 Solar sensor signal (for driver side)

    • Power switch on (IG)

    • Solar sensor covered with cloth

    		 Below 0.8 V
    H54-34 (SG-1) - Body ground LG - Body ground Ground for room temperature sensor Always Below 1 V
    H54-35 (SG-4) - Body ground W - Body ground Ground for air conditioning thermistor assembly Always Below 1 V
    H54-37 (LIN1) - H54-14 (GND)*3 B - W-B LIN communication signal Power switch on (IG) Pulse generation
    H54-40 (PTC1) - H54-14 (GND)

    G - W-B*1

    V - W-B*2

    		 PTC heater assembly (quick heater assembly) operation signal

    • Power switch on (READY)

    • ECO mode switch (integration control and panel assembly) on

    • Blower motor off

    • Temperature setting: except MAX HOT

    • Engine coolant temperature 70°C or lower

    • Ambient temperature 10°C or lower

    • IDH terminal signal less than 1 V (Inverter with converter assembly overload not detected)

    		 11 to 14 V
    H54-40 (PTC1) - H54-14 (GND)

    G - W-B*1

    V - W-B*2

    		 PTC heater assembly (quick heater assembly) operation signal

    • Power switch on (READY)

    • ECO mode switch (integration control and panel assembly) off

    • Blower motor on

    • Temperature setting: MAX HOT

    • Engine coolant temperature 70°C or lower

    • Ambient temperature 10°C or lower

    • IDH terminal signal less than 1 V (Inverter with converter assembly overload not detected)

    		 Below 1 V
    H55-3 (DGS) - H54-13 (SG-2) LG - L Smog ventilation sensor signal (HC, CO) After 30 seconds from Power switch on (IG) and sensor exposed to exhaust gas (HC, CO) 1.0 to 4.5 V
    H55-4 (DGS1) - H54-13 (SG-2) SB - L Smog ventilation sensor signal (NOx) After 30 seconds from Power switch on (IG) and sensor exposed to exhaust gas (NOx) 1.0 to 4.5 V
    z1-2 (BUS G) - Body ground - Ground for BUS IC Always Below 1 V
    z1-3 (BUS) - z1-2 (BUS G) - BUS IC control signal Power switch on (IG) Pulse generation
    z1-4 (B BUS) - z1-2 (BUS G) - Power supply for BUS IC Power switch off 11 to 14 V
    z1-5 (SGA) - Body ground - Ground for evaporator temperature sensor Always Below 1 V
    z1-6 (TEA) - z1-5 (SGA) - Evaporator temperature sensor signal

    • Power switch on (IG)

    • Evaporator temperature: 0°C (32°F)

    		 1.7 to 2.1 V
    z1-6 (TEA) - z1-5 (SGA) - Evaporator temperature sensor signal

    • Power switch on (IG)

    • Evaporator temperature: 15°C (59°F)

    		 0.9 to 1.3 V

    • *1: for LHD

    • *2: for RHD

    • *3: for 3 Zone Type


    1. A0007J2E54

      Waveform 1:

      Item Content
      Terminal No. H54-22 (BLW) - H54-14 (GND)
      Tool Setting 1 V/DIV., 500 μs/DIV.
      Condition

      • Power switch on (IG)

      • Blower switch: LO

  2. HYBRID VEHICLE CONTROL ECU ASSEMBLY (Click here)

  3. INVERTER WITH CONVERTER ASSEMBLY (Click here)

  4. RADIO RECEIVER ASSEMBLY (for Navigation Receiver Type) (Click here)

  5. RADIO RECEIVER ASSEMBLY (for Radio and Display Type (8 Speakers)) (Click here)

  6. RADIO RECEIVER ASSEMBLY (for Radio and Display Type (except 8 Speakers)) (Click here)

  7. MULTI-DISPLAY ASSEMBLY (for Navigation Receiver Type) (Click here)

  8. MULTI-DISPLAY ASSEMBLY (for Radio and Display Type (8 Speakers)) (Click here)

  9. MULTI-DISPLAY ASSEMBLY (for Radio and Display Type (except 8 Speakers)) (Click here)

  10. A000719E02

    COOLER CONTROL SWITCH ASSEMBLY (for 3 Zone Type)

    Tip:

    Check from the rear of the connector while it is connected to the cooler control switch assembly.

    Terminal No.

    (Symbol)

    		 Wiring Color Terminal Description Condition Specified Condition
    j2-1 (+B) - j2-16 (GND) R - W-B Power source (Back-up) Power switch off 11 to 14 V
    j2-6 (ACC) - j2-16 (GND) P - W-B Power source (ACC) Power switch off Below 1 V
    j2-6 (ACC) - j2-16 (GND) P - W-B Power source (ACC) Power switch on (ACC) 11 to 14 V
    j2-7 (IG+) - j2-16 (GND) SB - W-B Power source (IG) Power switch off Below 1 V
    j2-7 (IG+) - j2-16 (GND) SB - W-B Power source (IG) Power switch on (IG) 11 to 14 V
    j2-8 (ILL+) - j2-16 (GND) LG - W-B Light control switch signal Light control switch off Below 1 V
    j2-8 (ILL+) - j2-16 (GND) LG - W-B Light control switch signal Light control switch tail or head position 11 to 14 V
    j2-10 (RLIN) - Body ground GR - Body ground LIN communication signal Power switch on (IG) Pulse generation
    j2-16 (GND) - Body ground W-B - Body ground Ground for cooler control switch assembly Always Below 1 V