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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Motor Generator Control System (2WD) - Diagnostics - Introduction) >> MOTOR GENERATOR CONTROL SYSTEM (for 2WD) >> Terminals Of Ecu [12/2019 - 11/2023] >> Terminals Of Ecu [12/2019 - 11/2023]

Terminals Of Ecu [12/2019 - 11/2023]

WARNING: This page is about a different variant/trim than selected.
  1. GTY902330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Inverter with Converter Assembly

    HINT: 

    Since the inverter with converter assembly uses waterproof connectors, the voltage and waveforms cannot be inspected directly. Standard voltage readings and waveforms are indicated for reference only.

    INVERTER WITH CONVERTER ASSEMBLY

    Terminal No.
    (Symbol)    		 Terminal Description Condition Standard Condition
    A55-3 (HMCH) - A55-9 (GND1) Communication signal Ignition switch on (IG) Pulse generation
    (Waveform 1)
    A55-4 (HMCL) - A55-9 (GND1) Communication signal Ignition switch on (IG) Pulse generation
    (Waveform 1)
    A55-6 (HSDN) - A55-9 (GND1) MG shutdown signal Ignition switch on (READY) 0 to 1 V
    A55-16 (GI) - A55-9 (GND1) Camshaft position sensor signal Ignition switch on (READY), engine running Pulse generation
    (Waveform 2)
    A55-17 (NE) - A55-9 (GND1) Crankshaft position sensor signal Ignition switch on (READY), engine running Pulse generation
    (Waveform 3)
    A55-18 (ABFS) - A55-9 (GND1) Airbag activation signal Ignition switch on (READY) Pulse generation
    (Waveform 4)
    A55-22 (CANH) - A55-9 (GND1) CAN communication signal Ignition switch on (IG) Pulse generation
    (Waveform 5)
    A55-26 (IGCT) - A55-9 (GND1) Motor generator control ECU (MG ECU) power source Ignition switch on (IG) 11 to 14 V
    A55-27 (+B3) - A55-9 (GND1) Motor generator control ECU (MG ECU) power source Ignition switch on (IG) 11 to 14 V
    A55-31 (CANL) - A55-9 (GND1) CAN communication signal Ignition switch on (IG) Pulse generation
    (Waveform 5)
    A55-35 (+B2) - A55-9 (GND1) Motor generator control ECU (MG ECU) power source Ignition switch on (IG) 11 to 14 V
    A55-36 (+B1) - A55-9 (GND1) Motor generator control ECU (MG ECU) power source Ignition switch on (IG) 11 to 14 V
    C61-1 (MSN) - C61-2 (MSNG) Motor resolver signal Motor resolver running Pulse generation
    (Waveform 6)
    C61-3 (MCSG) - C61-4 (MCS) Motor resolver signal Motor resolver running Pulse generation
    (Waveform 6)
    C61-5 (MRF) - C61-6 (MRFG) Motor resolver reference signal Motor resolver running Pulse generation
    (Waveform 6)
    C61-8 (GRF) - C61-9 (GRFG) Generator resolver reference signal Generator resolver running Pulse generation
    (Waveform 7)
    C61-10 (GSN) - C61-11 (GSNG) Generator resolver signal Generator resolver running Pulse generation
    (Waveform 7)
    C61-12 (GCSG) - C61-13 (GCS) Generator resolver signal Generator resolver running Pulse generation
    (Waveform 7)
    NOTE:

    Do not measure the voltage or waveform on the sealed side of the inverter with converter assembly connector. Doing so may damage the connector because the connector is waterproof.

  2. Oscilloscope waveforms 

    HINT: 

    Oscilloscope waveforms shown in the illustrations are examples for reference only. Noise, chattering, etc. are not shown.

    1. Waveform 1 (communication signal)
      Item Content
      Terminal CH1: A55-4 (HMCL) - A55-9 (GND1)
      CH2: A55-3 (HMCH) - A55-9 (GND1)
      Condition Ignition switch on (IG)

      HINT: 

      The waveform will vary depending on the content of the digital communication (digital signal).

      GTY449937Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Waveform 2 (camshaft position sensor signal)
      Item Content
      Terminal A55-16 (GI) - A55-9 (GND1)
      Condition Ignition switch on (READY), engine running

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

      GTY454800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Waveform 3 (crankshaft position sensor signal)
      Item Content
      Terminal A55-17 (NE) - A55-9 (GND1)
      Condition Ignition switch on (READY), engine running

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

      GTY454800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Waveform 4 (Airbag activation signal)
      Item Content
      Terminal A55-18 (ABFS) - A55-9 (GND1)
      Condition Ignition switch on (READY)
      GTY750158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Waveform 5 (CAN communication signal)
      Item Content
      Terminal CH1: A55-22 (CANH) - A55-9 (GND1)
      CH2: A55-31 (CANL) - A55-9 (GND1)
      Condition Ignition switch on (IG)
      GTY449937Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Waveform 6 (motor resolver signal)
      Item Content
      Terminal CH1: C61-5 (MRF) - C61-6 (MRFG)
      CH2: C61-1 (MSN) - C61-2 (MSNG)
      CH3: C61-4 (MCS) - C61-3 (MCSG)
      Condition Motor resolver running

      HINT: 

      The width indicated by (A) becomes shorter as the rotor speed increases.

      GTY541092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Waveform 7 (generator resolver signal)
      Item Content
      Terminal CH1: C61-8 (GRF) - C61-9 (GRFG)
      CH2: C61-10 (GSN) - C61-11 (GSNG)
      CH3: C61-13 (GCS) - C61-12 (GCSG)
      Condition Generator resolver running

      HINT: 

      The width indicated by (A) becomes shorter as the rotor speed increases.

      GTY541092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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