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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Hybrid Control System (For Nickel Metal Hydride Battery) - Diagnostics - Introduction (1 Of 3)) >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> Terminals Of Ecu [06/2018 - 07/2019] >> Terminals Of Ecu [06/2018 - 07/2019]

Terminals Of Ecu [06/2018 - 07/2019]

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. HYBRID VEHICLE CONTROL ECU 
    Fig 1: Hybrid Vehicle Control ECU Connector End View
    GTY800422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No.
    (Symbol)    		 Wiring Color Terminal Description Input/Output Condition Specified Condition
    A32-1 (+B2) - G59-6 (E1) W - W-B Power source Input Power switch on (IG) 11 to 14 V
    A32-3 (IG2) - G59-6 (E1) B - W-B Power source Input Power switch on (IG) 11 to 14 V
    A32-8 (VCP2) - A32-18 (EPA2) SB - P Accelerator pedal sensor assembly power source (for VPA2) Output Power switch on (IG) 4.5 to 5.5 V
    A32-9 (VCPA) - A32-20 (EPA) BE - L Accelerator pedal sensor assembly power source (for VPA) Output Power switch on (IG) 4.5 to 5.5 V
    A32-13 (IWP) - G59-6 (E1) L - W-B Inverter water pump assembly signal Output Power switch on (READY) Pulse generation (Waveform 1)
    A32-14 (NIWP) - G59-6 (E1) W - W-B Inverter water pump assembly signal Input Power switch on (READY) Pulse generation (Waveform 1)
    A32-15 (STP) - G59-6 (E1) GR - W-B Stop light switch Input Brake pedal depressed 11 to 14 V
    Brake pedal released 0 to 1.5 V
    A32-17 (LIN3) - G59-6 (E1) L - W-B LIN communication signal (A/C inverter, auxiliary battery state sensor) Input/Output Power switch on (READY) Pulse generation
    A32-21 (TTA) - A32-31 (ETTA) GR - SB Transmission fluid temperature sensor Input Power switch on (IG), temperature 25°C (77°F) 3.6 to 4.6 V
    Power switch on (IG), temperature 60°C (140°F) 2.2 to 3.2 V
    A32-22 (ACCI) - G59-6 (E1) P - W-B ACC relay Input Power switch on (ACC) 11 to 14 V
    A32-24 (MMT) - A32-23 (MMTG) L - Y Motor temperature sensor Input Power switch on (IG), temperature 25°C (77°F) 3.6 to 4.6 V
    Power switch on (IG), temperature 60°C (140°F) 2.2 to 3.2 V
    A32-26 (GMT) - A32-27 (GMTG) P - V Generator temperature sensor Input Power switch on (IG), temperature 25°C (77°F) 3.6 to 4.6 V
    Power switch on (IG), temperature 60°C (140°F) 2.2 to 3.2 V
    A32-28 (VPA2) - A32-18 (EPA2) GR - P Accelerator pedal sensor assembly (for accelerator pedal position detection) Input Power switch on (IG), accelerator pedal released 1.0 to 2.2 V
    Power switch on (IG), engine stopped, shift lever in P, accelerator pedal fully depressed 3.4 to 5.3 V
    A32-30 (VPA) - A32-20 (EPA) G - L Accelerator pedal sensor assembly (for accelerator pedal position detection) Input Power switch on (IG), accelerator pedal released 0.4 to 1.4 V
    Power switch on (IG), engine stopped, shift lever in P, accelerator pedal fully depressed 2.6 to 4.5 V
    A33-1 (PSFT) - G59-6 (E1) L - W-B Shift lever position sensor power source Output Power switch on (ACC) 6.0 to 14 V
    A33-2 (BL) - G59-6 (E1) BE - W-B Back-up light Output Power switch on (IG), shift lever in R 11 to 14 V
    A33-4 (+B1) - G59-6 (E1) R - W-B Power source Input Power switch on (IG) 11 to 14 V
    A33-6 (MREL) - G59-6 (E1) G - W-B Main relay Output Power switch on (IG) 11 to 14 V
    A33-7 (IGB) - G59-6 (E1) B - W-B Power source Input Power switch on (IG) 8.5 to 14 V
    A33-12 (HSDN) - G59-6 (E1) W - W-B MG ECU shutdown signal Output Power switch on (READY) 0 to 1.5 V
    A33-13 (ILK) - G59-6 (E1) GR - W-B Interlock switch Input Power switch on (IG), service plug grip installed correctly 0 to 1.5 V
    Power switch on (IG), service plug grip not installed 11 to 14 V
    A33-14 (DB2) - G59-6 (E1) V - W-B Shift lever position signal Input Power switch on (IG), shift lever in D or S 6.0 to 14 V
    Power switch on (IG), shift lever not in D or S 0 to 1.5 V
    A33-15 (R) - G59-6 (E1) LG - W-B Shift lever position signal Input Power switch on (IG), shift lever in R 6.0 to 14 V
    Power switch on (IG), shift lever not in R 0 to 1.5 V
    A33-17 (PR) - G59-6 (E1) R - W-B Shift lever position signal Input Power switch on (IG), shift lever in P or R 6.0 to 14 V
    Power switch on (IG), shift lever not in P or R 0 to 1.5 V
    A33-20 (N) - G59-6 (E1) G - W-B Shift lever position signal Input Power switch on (IG), shift lever in N 6.0 to 14 V
    Power switch on (IG), shift lever not in N 0 to 1.5 V
    A33-21 (P) - G59-6 (E1) BE - W-B Shift lever position signal Input Power switch on (IG), shift lever in P 6.0 to 14 V
    Power switch on (IG), shift lever not in P 0 to 1.5 V
    A33-26 (DB1) - G59-6 (E1) W - W-B Shift lever position signal Input Power switch on (IG), shift lever in D or S 6.0 to 14 V
    Power switch on (IG), shift lever not in D or S 0 to 1.5 V
    A33-28 (ST1-) - G59-6 (E1) LG - W-B Stop light switch signal Input Power switch on (IG), brake pedal depressed 0 to 1.5 V
    Power switch on (IG), brake pedal released 11 to 14 V
    A33-30 (HMCL) - G59-6 (E1) W - W-B MG ECU communication request signal Input/Output Power switch on (IG) Pulse generation (Waveform 2)
    A33-31 (HMCH) - G59-6 (E1) B - W-B MG ECU communication request signal Input/Output Power switch on (IG) Pulse generation (Waveform 2)
    A33-34 (PNB) - G59-6 (E1) B - W-B Shift lever position signal Input Power switch on (IG), shift lever in P or N 6.0 to 14 V
    G59-1 (SMRG) - G59-5 (E01) G - W-B System main relay operation signal Output Power switch on (IG) → Power switch on (READY) Pulse generation (Waveform 3)
    G59-3 (SMRP) - G59-5 (E01) W - W-B System main relay operation signal Output Power switch on (IG) → Power switch on (READY) Pulse generation (Waveform 3)
    G59-4 (SMRB) - G59-5 (E01) GR - W-B System main relay operation signal Output Power switch on (IG) → Power switch on (READY) Pulse generation (Waveform 3)
    G59-5 (E01) - Body ground W-B - Body ground Ground - Always Below 1 Ω
    G59-6 (E1) - Body ground W-B - Body ground Ground - Always Below 1 Ω
    G59-8 (INDR) - G59-6 (E1) LG - W-B Shift position indicator signal Input Power switch on (IG), shift lever in R 0 to 3.2 V
    Power switch on (IG), shift lever not in R 11 to 14 V
    G59-9 (ST2) - G59-6 (E1) L - W-B Starter signal Input Power switch on (IG) 0 to 1.5 V
    G59-10 (NORM) - G59-6(E1) LG - W-B Drive mode select switch signal Input Power switch on (IG), drive mode select switch not pushed 11 to 14 V
    Power switch on (IG), drive mode select switch being pushed and held 0 to 1.5 V
    G59-32 (BTH+) - G59-6 (E1) LG - W-B Communication signal from battery voltage sensor to hybrid vehicle control ECU Input Power switch on (IG) Pulse generation (Waveform 4)
    G59-33 (BTH-) - G59-6 (E1) W - W-B Communication signal from battery voltage sensor to hybrid vehicle control ECU Input Power switch on (IG) Pulse generation (Waveform 4)
    G60-1 (M) - G59-6 (E1) B - W-B Transmission control Input Power switch on (IG), shift lever in S 11 to 14 V
    Power switch on (IG), shift lever not in S 0 to 1.5 V
    G60-3 (BATT) - G59-6 (E1) L - W-B Constant power source Input Power switch on (IG) 11 to 14 V
    Power switch on (READY) 11 to 15.5 V
    G60-4 (E12) - Body ground W-B - Body ground Ground - Always Below 1 Ω
    G60-5 (E02) - Body ground W-B - Body ground Ground - Always Below 1 Ω
    G60-6 (SPRT) - G59-6 (E1) BE - W-B Drive mode select switch signal Input Power switch on (IG), drive mode select switch not turned 11 to 14 V
    Power switch on (IG), drive mode switch being turned and held at Sport position 0 to 1.5 V
    G60-7 (PLKC) - G59-6 (E1) L - W-B Shift lock release request signal Output Power switch on (READY), brake pedal depressed 11 to 14 V
    Power switch on (READY), brake pedal released 0 to 1.5 V
    G60-8 (SFTD) - G59-6 (E1) W - W-B Transmission control Input Power switch on (IG), shift lever in S 11 to 14 V
    Power switch on (IG), shift lever in (-) or shift paddle switch LH (-) operated 0 to 1.5 V
    G60-9 (SFTU) - G59-6 (E1) LG - W-B Transmission control Input Power switch on (IG), shift lever in S 11 to 14 V
    Power switch on (IG), shift lever in (+) or shift paddle switch RH (+) operated 0 to 1.5 V
    G60-10 (INDM) - G59-6 (E1) LA-GR - W-B Shift position indicator signal Input Power switch on (IG), shift lever in S 0 to 3.2 V
    Power switch on (IG), shift lever not in S 11 to 14 V
    G60-11 (INDD) - G59-6 (E1) W - W-B Shift position indicator signal Input Power switch on (IG), shift lever in D 0 to 3.2 V
    Power switch on (IG), shift lever not in D 11 to 14 V
    G60-12 (INDN) - G59-6 (E1) R - W-B Shift position indicator signal Input Power switch on (IG), shift lever in N 0 to 3.2 V
    Power switch on (IG), shift lever not in N 11 to 14 V
    G60-13 (INDP) - G59-6 (E1) B - W-B Shift position indicator signal Input Power switch on (IG), shift lever in P 0 to 3.2 V
    Power switch on (IG), shift lever not in P 11 to 14 V
    G60-14 (ABFS) - G59-6 (E1) B - W-B Airbag activation signal Input Power switch on (READY) Pulse generation (Waveform 5)
    G60-15 (EVSW) - G59-6 (E1) G - W-B Drive mode select switch signal Input Power switch on (IG), EV mode switch not pushed 11 to 14 V
    Power switch on (IG), EV mode switch being pushed and held 0 to 1.5 V
    G60-24 (CA1L) - G59-6 (E1) W - W-B CAN communication signal Input/Output Power switch on (IG) Pulse generation (Waveform 6)
    G60-25 (CA1H) - G59-6 (E1) L - W-B CAN communication signal Input/Output Power switch on (IG) Pulse generation (Waveform 6)
    G60-28 (TC) - G59-6 (E1) GR - W-B Diagnosis terminal Input Power switch on (IG) 11 to 14 V
    G60-29 (SI0) - G59-6 (E1) SB - W-B HV battery cooling blower assembly operation signal Output Cooling fans operating Pulse generation (Waveform 7)
    Cooling fans not operating 4.5 to 5.5 V
    G60-30 (CA3N) - G59-6 (E1) W - W-B CAN communication signal Input/Output Power switch on (IG) Pulse generation (Waveform 8)
    G60-31 (CA3P) - G59-6 (E1) G - W-B CAN communication signal Input/Output Power switch on (IG) Pulse generation (Waveform 8)
    1. Oscilloscope waveforms

      HINT: 

      Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.

      1. Waveform 1 (Inverter water pump assembly signal)
        Item Content
        Terminal CH1: A32-13 (IWP) - G59-6 (E1)
        CH2: A32-14 (NIWP) - G59-6 (E1)
        Equipment Setting 5 V/DIV., 20 ms./DIV.
        Condition Power switch on (READY)
        Fig 2: Waveform 1 (Inverter water pump assembly signal)
        GTY810898Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT: 

        The duty of the IWP signal and the frequency of the NIWP signal change according to the coolant (for inverter) temperature.

      2. Waveform 2 (MG ECU communication request signal)
        Item Content
        Terminal CH1: A33-31 (HMCH) - G59-6 (E1)
        CH2: A33-30 (HMCL) - G59-6 (E1)
        Equipment Setting 1 V/DIV., 50 μs./DIV.
        Condition Power switch on (IG)

        HINT: 

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

        Fig 3: Waveform 2 (MG ECU communication request signal)
        GTY763773Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Waveform 3 (System main relay operation signal)
        Item Content
        Terminal CH1: G59-3 (SMRP) - G59-5 (E01)
        CH2: G59-4 (SMRB) - G59-5 (E01)
        CH3: G59-1 (SMRG) - G59-5 (E01)
        Equipment Setting 10 V/DIV., 200 ms./DIV.
        Condition Power switch on (IG) → Power switch on (READY)
        Fig 4: Waveform 3 (System main relay operation signal)
        GTY746398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Waveform 4 (Communication signal from battery voltage sensor to hybrid vehicle control ECU)
        Item Content
        Terminal CH1: G59-32 (BTH+) - G59-6 (E1)
        CH2: G59-33 (BTH-) - G59-6 (E1)
        Equipment Setting 2 V/DIV., 500 μs./DIV.
        Condition Power switch on (IG)

        HINT: 

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

        Fig 5: Waveform 4 (Communication signal from battery voltage sensor to hybrid vehicle control ECU)
        GTY751181Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Waveform 5 (Airbag activation signal)
        Item Content
        Terminal G60-14 (ABFS) - G59-6 (E1)
        Equipment Setting 5 V/DIV., 150 ms./DIV.
        Condition Power switch on (READY)
        Fig 6: Waveform 5 (Airbag activation signal)
        GTY750158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Waveform 6 (CAN communication signal)
        Item Content
        Terminal CH1: G60-25 (CA1H) - G59-6 (E1)
        CH2: G60-24 (CA1L) - G59-6 (E1)
        Equipment Setting 1 V/DIV., 50 μs./DIV.
        Condition Power switch on (IG)

        HINT: 

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

        Fig 7: Waveform 6 (CAN communication signal)
        GTY763772Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      7. Waveform 7 (HV battery blower fan operation signal)
        Item Content
        Terminal G60-29 (SI0) - G59-6 (E1)
        Equipment Setting 10 V/DIV., 1 ms./DIV.
        Condition Cooling fans operating

        HINT: 

        The waveform will vary with the operating speed of the battery cooling blower assembly.

        Fig 8: Waveform 7 (HV battery blower fan operation signal)
        GTY774525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      8. Waveform 8 (CAN communication signal)
        Item Content
        Terminal CH1: G60-31 (CA3P) - G59-6 (E1)
        CH2: G60-30 (CA3N) - G59-6 (E1)
        Equipment Setting 1 V/DIV., 50 μs./DIV.
        Condition Power switch on (IG)

        HINT: 

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

        Fig 9: Waveform 8 (CAN communication signal)
        GTY773655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. BATTERY VOLTAGE SENSOR 
    Fig 10: Battery Voltage Sensor Connector End View
    GTY818229Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No.
    (Symbol)    		 Wiring Color Input/Output Terminal Description Condition Specified Condition
    y10-1 (TC0) - y10-7 (GC0) G - G IN Intake air temperature sensor Power switch on (IG), HV battery intake air temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C (-40°F)) to 1.0 V (90°C (194°F))
    y10-2 (TB2) - y10-8 (GB2) R - R IN Battery temperature sensor 2 Power switch on (IG), HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C (-40°F)) to 1.0 V (90°C (194°F))
    y10-3 (TB1) - y10-9 (GB1) W - W IN Battery temperature sensor 1 Power switch on (IG), HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C (-40°F)) to 1.0 V (90°C (194°F))
    y10-4 (TB0) - y10-10 (GB0) L - L IN Battery temperature sensor 0 Power switch on (IG), HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C (-40°F)) to 1.0 V (90°C (194°F))
    y10-5 (IB0) - y10-12 (GIB) Y - B IN Battery current sensor Power switch on (IG) 0.5 to 4.5 V
    y10-6 (VIB) - y10-12 (GIB) BR - B OUT Power source for battery current sensor Power switch on (IG) 4.5 to 5.5 V
    N21-1 (IGCT) - N21-5 (GND) B - W-B IN Control signal Power switch on (IG) 11 to 14 V
    N21-2 (BTH+) - N21-5 (GND) GR - W-B OUT Serial communication Power switch on (IG) Pulse generation
    (waveform 1)
    N21-3 (BTH-) - N21-5 (GND) W - W-B OUT Serial communication Power switch on (IG) Pulse generation
    (waveform 2)
    N21-5 (GND) - Body ground W-B - Ground Always (continuity check) Below 1 Ω
    N21-8 (FP0) - N21-5 (GND) B - W-B IN Battery cooling blower monitor signal Battery cooling blower assembly stopped 0 Hz
    Battery cooling blower assembly operating (Active Test of cooling fan being performed) Pulse generation
    (waveform 3)
    1. Oscilloscope waveforms

      HINT: 

      Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.

      1. Waveform 1 (Serial communication)
        Item Content
        Terminal N21-2 (BTH+) - N21-5 (GND)
        Equipment Setting 2 V/DIV., 500 μs/DIV.
        Condition Power switch on (IG)

        HINT: 

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

        Fig 11: Waveform 1 (Serial Communication)
        GTY576396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Waveform 2 (Serial communication)
        Item Content
        Terminal N21-3 (BTH-) - N21-5 (GND)
        Equipment Setting 2 V/DIV., 500 μs/DIV.
        Condition Power switch on (IG)

        HINT: 

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

        Fig 12: Waveform 2 (Serial Communication)
        GTY568071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Waveform 3 (Battery cooling blower monitor signal)
        Item Content
        Terminal N21-8 (FP0) - N21-5 (GND)
        Equipment Setting 2 V/DIV., 2 ms/DIV.
        Condition Battery cooling blower assembly operating (Active Test of cooling fan being performed)

        HINT: 

        The frequency of the waveform will vary with the operating speed of the battery cooling blower assembly.

        Fig 13: Waveform 3 (Battery Cooling Blower No. 0 Monitor Signal)
        GTY557099Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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