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AIR CONDITIONING SYSTEM TERMINALS OF ECU

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  1. A0009HVE03

    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*2

    SB - L*3

    		 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*2

    SB - L*3

    		 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*2

    SB - L*3

    		 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*2

    BE - W-B*3

    		 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*2

    BE - W-B*3

    		 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*2

    Y - W-B*3

    		 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*2

    Y - W-B*3

    		 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)*1 B - W-B LIN communication signal Power switch on (IG) Pulse generation
    H54-40 (PTC1) - H54-14 (GND)

    G - W-B*2

    V - W-B*3

    		 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*2

    V - W-B*3

    		 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: w/o Multi-display

    • *2: for LHD

    • *3: for RHD


    1. A0007J2E53

      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. POWER MANAGEMENT CONTROL ECU (Click here)

  3. INVERTER WITH CONVERTER ASSEMBLY (Click here)

  4. MULTI-MEDIA MODULE RECEIVER ASSEMBLY (w/ Multi-display) (Click here)

  5. A00091SE02

    RADIO RECEIVER ASSEMBLY (w/o Multi-display)

    Tip:

    Check from the rear of the connector while it is connected to the radio receiver assembly.

    Terminal No.

    (Symbol)

    		 Wiring Color Terminal Description Condition Specified Condition
    H82-1 (B) - Body ground R - Body ground Power source (Back-up) Power switch off 11 to 14 V
    H42-5 (TX+) R AVC-LAN communication signal - -
    H42-9 (GND) - Body ground W-B - Body ground Ground for radio receiver assembly Always Below 1 V
    H42-13 (TX-) G AVC-LAN communication signal - -
    H42-16 (ACC) - H42-9 (GND) Y - W-B Power source (ACC) Power switch off Below 1 V
    H42-16 (ACC) - H42-9 (GND) Y - W-B Power source (ACC) Power switch on (ACC) 11 to 14 V

  6. MULTI-DISPLAY ASSEMBLY (w/ Multi-display) (Click here)

  7. ACCESSORY METER ASSEMBLY (w/o Multi-display) (Click here)

  8. 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