AIR CONDITIONING SYSTEM(for Manual Air Conditioning System) TERMINALS OF ECU

  1. AIR CONDITIONING AMPLIFIER ASSEMBLY

    E219842N02
    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

    E62-1 (IG+) - E62-23 (GND)

    L - BR

    Power source (IG)

    Ignition switch ON

    11 to 14 V

    E62-1 (IG+) - E62-23 (GND)

    L - BR

    Power source (IG)

    Ignition switch off

    Below 1 V

    E62-2 (A/C) - E62-23 (GND)

    V - BR

    A/C switch signal

    • Ignition switch ON

    • A/C switch: On

    11 to 14 V

    E62-2 (A/C) - E62-23 (GND)

    V - BR

    A/C switch signal

    • Ignition switch ON

    • A/C switch: Off

    Below 1 V

    E62-3 (HEAT) - E62-23 (GND)*3

    LG - BR

    MAX HOT switch signal

    • Ignition switch ON

    • MAX HOT switch: Off

    Below 1 V

    E62-3 (HEAT) - E62-23 (GND)*3

    LG - BR

    MAX HOT switch signal

    • Ignition switch ON

    • MAX HOT switch: On

    11 to 14 V

    E62-4 (TE) - E62-15 (SG-3)

    W - P

    No. 1 cooler thermistor sensor signal

    • Ignition switch ON

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

    1.7 to 2.1 V

    E62-4 (TE) - E62-15 (SG-3)

    W - P

    No. 1 cooler thermistor signal

    • Ignition switch ON

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

    0.9 to 1.3 V

    E62-5 (SG-2) - Body ground

    G - Body ground

    Ground for air conditioner pressure sensor

    Always

    Below 1 V

    E62-7 (PRE) - E62-5 (SG-2)

    L - G

    Air conditioner pressure sensor signal

    • Engine running

    • A/C system operating

    • Refrigerant pressure: Abnormal pressure (more than 3025 kPa (30.8 kgf/cm2, 439 psi))

    4.62 V or higher

    E62-7 (PRE) - E62-5 (SG-2)

    L - G

    Air conditioner pressure sensor signal

    • Engine running

    • A/C system operating

    • Refrigerant pressure: Abnormal pressure (less than 176 kPa (1.8 kgf/cm2, 26 psi))

    Below 0.74 V

    E62-7 (PRE) - E62-5 (SG-2)

    L - G

    Air conditioner pressure sensor signal

    • Engine running

    • A/C system operating

    • Refrigerant pressure: Normal pressure (less than 3025 kPa (30.8 kgf/cm2, 439 psi) and more than 176 kPa (1.8 kgf/cm2, 26 psi))

    0.74 to 4.62 V

    E62-8 (CANH) - E62-9 (CANL)

    Y - W

    CAN communication system

    CAN communication circuit

    Pulse generation

    E62-11 (SOL+) - E62-23 (GND)

    LG - BR

    Compressor solenoid operation signal

    • Engine running

    • A/C switch: On

    • Blower switch: LO

    Pulse generation

    (See waveform 1)

    E62-13 (PTC1) - E62-23 (GND)*3

    W - BR

    Quick heater assembly operation signal

    • Engine running

    • Temperature settings: MAX HOT

    • Ambient temperature: 10 °C or lower

    • Engine coolant temperature: 75 °C or lower

    • Light control switch assembly off

    • Blower switch: On

    Below 1 V

    E62-13 (PTC1) - E62-23 (GND)*3

    W - BR

    Quick heater assembly operation signal

    • Engine running

    • Temperature settings: MAX HOT

    • Ambient temperature: 10 °C or lower

    • Engine coolant temperature: 75 °C or lower

    • Light control switch assembly on

    • Blower switch: Off

    11 to 14 V

    E62-14 (HR) - E62-23 (GND)

    GR - BR*1

    SB - BR*2

    Heater relay operation signal

    • Ignition switch ON

    • Blower switch: LO

    Below 1 V

    E62-14 (HR) - E62-23 (GND)

    GR - BR*1

    SB - BR*2

    Heater relay operation signal

    • Ignition switch ON

    • Blower switch: Off

    11 to 14 V

    E62-15 (SG-3) - Body ground

    P - Body ground

    Ground for No. 1 cooler thermistor

    Always

    Below 1 V

    E62-16 (LED) - E62-23 (GND)

    GR - BR

    A/C switch indicator signal

    • Ignition switch ON

    • A/C switch: On

    • Blower switch: On

    Below 1 V

    E62-16 (LED) - E62-23 (GND)

    GR - BR

    A/C switch indicator signal

    • Ignition switch ON

    • A/C switch: Off

    • Blower switch: On

    11 to 14 V

    E62-17 (SBLW) - E62-23 (GND)

    L - BR

    Blower motor operation condition signal

    • Ignition switch ON

    • Blower switch: On

    Below 1 V

    E62-17 (SBLW) - E62-23 (GND)

    L - BR

    Blower motor operation condition signal

    • Ignition switch ON

    • Blower switch: Off

    11 to 14 V

    E62-19 (PTC2) - E62-23 (GND)*3

    R - BR

    Quick heater assembly operation signal

    • Engine running

    • Temperature settings: MAX HOT

    • Ambient temperature: 10 °C or lower

    • Engine coolant temperature: 65 °C or lower

    • Light control switch assembly off

    • Blower switch: On

    Below 1 V

    E62-19 (PTC2) - E62-23 (GND)*3

    R - BR

    Quick heater assembly operation signal

    • Engine running

    • Temperature settings: MAX HOT

    • Ambient temperature: 10 °C or lower

    • Engine coolant temperature: 65 °C or lower

    • Light control switch assembly on

    • Blower switch: Off

    11 to 14 V

    E62-20 (PTC3) - E62-23 (GND)*3

    P - BR

    Quick heater assembly operation signal

    • Engine running

    • Temperature settings: MAX HOT

    • Ambient temperature: 10 °C or lower

    • Engine coolant temperature: 70 °C or lower

    • Light control switch assembly off

    • Blower switch: On

    Below 1 V

    E62-20 (PTC3) - E62-23 (GND)*3

    P - BR

    Quick heater assembly operation signal

    • Engine running

    • Temperature settings: MAX HOT

    • Ambient temperature: 10 °C or lower

    • Engine coolant temperature: 70 °C or lower

    • Light control switch assembly on

    • Blower switch: Off

    11 to 14 V

    E62-21 (HLS) - E62-23 (GND)*3

    V - BR

    Headlight dimmer signal (for PTC heater function)

    Light control switch assembly off

    11 to 14 V

    E62-21 (HLS) - E62-23 (GND)*3

    V - BR

    Headlight dimmer signal (for PTC heater function)

    Light control switch assembly on

    Below 1 V

    E62-23 (GND) - Body ground

    BR - Body ground

    Ground for main power supply

    Always

    Below 1 V

    E62-24 (S5-3) - E62-5 (SG-2)

    B - G

    Power supply for air conditioner pressure sensor

    Ignition switch ON

    4.75 to 5.25 V

    E62-24 (S5-3) - E62-5 (SG-2)

    B - G

    Power supply for air conditioner pressure sensor

    Ignition switch off

    Below 1 V

    • *1: for RHD

    • *2: for LHD

    • *3: w/ PTC heater

    1. E106664N03

      Waveform 1:

      Item

      Content

      Terminal No.

      E62-11 (SOL+) - E62-23 (GND)

      Tool Setting

      5 V/DIV., 500 μs/DIV.

      Vehicle Condition

      • Engine running

      • A/C switch: On

      • Blower switch: LO