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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 80 (Heating / Air Conditioning System (HV) - Diagnostics - Introduction (2 Of 2)) >> AIR CONDITIONING SYSTEM (for HV Model) >> Terminals Of Ecu [08/2020 - 12/2021] >> Terminals Of Ecu [08/2020 - 12/2021]

Terminals Of Ecu [08/2020 - 12/2021]

WARNING: This page is about a different variant/trim than selected.
  1. AIR CONDITIONING AMPLIFIER ASSEMBLY 
    GTY923745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *A w/o Front Seat Heater System *B w/ Front Seat Heater System
    1. Disconnect the G46 air conditioning amplifier assembly connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No.
      (Symbol)      		 Wiring Color Terminal Description Condition Specified Condition
      G46-5 (B) - Body ground G - Body ground Power source (Back-up) Ignition switch off 11 to 14 V
      G46-6 (IG+) - Body ground GR - Body ground Power source (IG) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      G46-17 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    3. Reconnect the G46 air conditioning amplifier assembly connector.
    4. Measure the voltage, resistance and pulse according to the value(s) in the table below.
      Terminal No.
      (Symbol)      		 Wiring Color Terminal Description Condition Specified Condition
      G47-1 (TAM) - G47-14 (SG-2) R - R Ambient temperature sensor signal
      • Ignition switch ON (do not start the engine and electric motor)
      • Ambient temperature: 25°C (77°F)
      		 1.05 to 1.45 V
      • Ignition switch ON (do not start the engine and electric motor)
      • Ambient temperature: 40°C (104°F)
      		 0.64 to 0.87 V
      G47-3 (SG-1) - Body ground G - Body ground Ground for sensor Always Below 1 Ω
      G47-5 (TR) - Body ground GR - Body ground Room temperature sensor signal
      • Ignition switch ON
      • Cabin temperature: 25°C (77°F)
      		 1.05 to 1.45 V
      • Ignition switch ON
      • Cabin temperature: 40°C (104°F)
      		 0.64 to 0.87 V
      G47-6 (PRE) - G47-15 (SG-4) GR - L Air conditioner pressure sensor signal
      • Ignition switch ON (READY)
      • Air conditioning system operating
      • Refrigerant pressure: Normal pressure (below 2812 kPa (28.7 kgf/cm2 , 408 psi) and higher than 196 kPa (2.0 kgf/cm2 , 28 psi))
      		 0.74 to 4.61 V
      • Ignition switch ON (READY)
      • Air conditioning system operating
      • Refrigerant pressure: Abnormal pressure (less than 196 kPa (2.0 kgf/cm2 , 28 psi))
      		 Below 0.74 V
      • Ignition switch ON (READY)
      • Air conditioning system operating
      • Refrigerant pressure: Abnormal pressure (more than 2812 kPa (28.7 kgf/cm2 , 408 psi))
      		 4.61 V or higher
      G47-11 (S5-3) - Body ground L - Body ground Power source of sensor Ignition switch off → ON Below 1 V → 4.75 to 5.25 V
      G47-14 (SG-2) - Body ground R - Body ground Ground for sensor Always Below 1 Ω
      G47-15 (SG-4) - Body ground L - Body ground Ground for sensor Always Below 1 Ω
      G46-1 (CANL) - CAN communication line - -
      G46-2 (CANH) - CAN communication line - -
      G46-7 (LIN1) - Body ground BE - Body ground LIN communication signal Ignition switch ON Pulse generation
      (See waveform 1)
      G46-11 (ECOS) - Body ground W - Body ground Integration control and panel assembly (ECO switch) signal
      • Ignition switch ON
      • Integration control and panel assembly (ECO switch) Off → On
      		 11 to 14 V → Below 1 V
      G46-21 (BLW) - Body ground Y - Body ground Blower motor speed control signal
      • Ignition switch ON
      • Blower switch: LO
      		 Pulse generation
      (See waveform 2)
      z11-2 (BUS G) - Body ground - Ground for BUS IC Always Below 1 Ω
      z11-3 (BUS) - z11-2 (BUS G) - BUS IC control signal Ignition switch ON Pulse generation
      (See waveform 3)
      z11-4 (B BUS) - z11-2 (BUS G) - Power supply for BUS IC Ignition switch off 11 to 14 V
      z11-5 (SGA) - Body ground - Ground for No. 1 cooler thermistor Always Below 1 Ω
      z11-6 (TEA) - z11-5 (SGA) - No. 1 cooler thermistor signal
      • Ignition switch ON
      • Evaporator temperature: 0°C (32°F)
      		 1.7 to 2.1 V
      • Ignition switch ON
      • Evaporator temperature: 15°C (59°F)
      		 0.9 to 1.3 V
    5. Waveform 1:
      Fig 1: Waveform 1
      GTY781356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Content
      Terminal No. G46-7 (LIN1) - Body ground
      Tool Setting 2 V/DIV., 20 μs./DIV.
      Vehicle Condition Ignition switch ON
    6. Waveform 2:
      Fig 2: Waveform 2
      GTY800960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Content
      Terminal No. G46-21(BLW) - Body ground
      Tool Setting 1 V/DIV., 500 μs./DIV.
      Vehicle Condition
      • Ignition switch ON
      • Blower switch: LO
    7. Waveform 3:
      Fig 3: Waveform 3
      GTY832215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Content
      Terminal No. z11-3 (BUS) - z11-2 (BUS G)
      Tool Setting 2 V/DIV., 20 μs./DIV.
      Vehicle Condition Ignition switch ON
  2. AIR CONDITIONING CONTROL ASSEMBLY 
    GTY864713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the G24 air conditioning control assembly connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No.
      (Symbol)      		 Wiring Color Terminal Description Condition Specified Condition
      G24-13 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      G24-9 (IG+) - Body ground LA-B - Body ground Power source (IG) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
    3. Reconnect the G24 air conditioning control assembly connector.
    4. Check for waveform according to the value(s) in the table below.
      Terminal No.
      (Symbol)      		 Wiring Color Terminal Description Condition Specified Condition
      G24-7 (LIN1) - Body ground LG - Body ground LIN communication Ignition switch ON Pulse generation
      (See waveform 1)
    5. Waveform 1:
      Fig 4: Waveform 1
      GTY781356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Content
      Terminal No. G24-7 (LIN1) - Body ground
      Tool Setting 2 V/DIV., 20 μs./DIV.
      Vehicle Condition Ignition switch ON
  3. HYBRID VEHICLE CONTROL ECU ASSEMBLY 
    1. for AWD: Refer to TERMINALS OF ECU [06/2020 - ]
    2. for LITHIUM-ION BATTERY: Refer to TERMINALS OF ECU [06/2020 - ]
  4. MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. w/ Headlight ECU without AFS: Refer to TERMINALS OF ECU [08/2020 - 12/2021]
    2. w/ AFS: Refer to TERMINALS OF ECU [06/2020 - 12/2021]
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