HYBRID CONTROL SYSTEM TERMINALS OF ECU

A004EV2E01
Text in Illustration
*1 Hybrid Vehicle Control ECU - -
Hybrid vehicle control ECU

Terminal No.

(Symbol)

 Wiring Color Terminal Description Condition Specified Condition
A26-1 (+B2) - F55-6 (E1) L - BR Power source Ignition switch ON (IG) 11 to 14 V
A26-3 (IG2) - F55-6 (E1) V - BR Power source Ignition switch ON (IG) 11 to 14 V
A26-8 (VCP2) - A26-18 (EPA2) B - W Accelerator pedal sensor assembly power source (for VPA2) Ignition switch ON (IG) 4.5 to 5.5 V
A26-9 (VCPA) - A26-20 (EPA) G - R Accelerator pedal sensor assembly power source (for VPA1) Ignition switch ON (IG) 4.5 to 5.5 V
A26-13 (IWP) - F55-6 (E1) G - BR Inverter water pump assembly signal Ignition switch ON (READY)

Pulse generation

(Waveform 1)
A26-14 (NIWP) - F55-6 (E1) P - BR Inverter water pump assembly signal Ignition switch ON (READY)

Pulse generation

(Waveform 1)
A26-15 (STP) - F55-6 (E1) G - BR Stop light switch Brake pedal depressed 11 to 14 V
Brake pedal released 0 to 1.5 V
A26-16 (VLO) - F55-6 (E1) R - BR DC/DC operation monitor / voltage change signal Ignition switch ON (IG)

Pulse generation

(Waveform 2)
A26-24 (MMT) - A26-23 (MMTG) L - BR Motor temperature sensor Ignition switch ON (IG), temperature 25°C (77°F) 3.6 to 4.6 V
Ignition switch ON (IG), temperature 60°C (140°F) 2.2 to 3.2 V
A26-25 (NODD) - F55-6 (E1) W - BR DC/DC operation DC/DC converter operating normally 5 to 7 V
DC/DC converter not operating normally 2 to 4 V
DC/DC converter operating prohibited 0.1 to 0.5 V
A26-26 (GMT) - A26-27 (GMTG) B - R Generator temperature sensor Ignition switch ON (IG), temperature 25°C (77°F) 3.6 to 4.6 V
Ignition switch ON (IG), temperature 60°C (140°F) 2.2 to 3.2 V
A26-28 (VPA2) - A26-18 (EPA2) B - W Accelerator pedal sensor assembly (for accelerator pedal position detection) Ignition switch ON (IG), accelerator pedal released 1.0 to 2.2 V
Ignition switch ON (IG) engine stopped, shift lever in P accelerator pedal fully depressed 3.4 to 5.3 V
A26-30 (VPA) - A26-20 (EPA) R - R Accelerator pedal sensor assembly (for accelerator pedal position detection) Ignition switch ON (IG), accelerator pedal released 0.4 to 1.4 V
Ignition switch ON (IG) engine stopped, shift lever in P accelerator pedal fully depressed 2.6 to 4.5 V
A27-2 (BL) - F55-6 (E1) R - BR Back up light Ignition switch ON (IG), shift lever in R 11 to 14 V
A27-4 (+B1) - F55-6 (E1) L - BR Power source Ignition switch ON (IG) 11 to 14 V
A27-6 (MREL) - F55-6 (E1) G - BR Main relay Ignition switch ON (IG) 11 to 14 V
A27-8 (ETI) - F55-6 (E1) R - BR A/C communication signal Ignition switch ON (READY), air conditioning system stopped

Pulse generation

(Waveform 3)
A27-9 (ITE) - F55-6 (E1) Y - BR A/C communication signal Ignition switch ON (READY), air conditioning system stopped

Pulse generation

(Waveform 3)
A26-10 (CLK) - F55-6 (E1) G - BR A/C communication signal Ignition switch ON (READY), air conditioning system stopped

Pulse generation

(Waveform 3)
A27-11 (STB) - F55-6 (E1) W - BR A/C communication signal Ignition switch ON (READY), air conditioning system stopped

Pulse generation

(Waveform 3)
A27-12 (HSDN) - F55-6 (E1) B - BR MG ECU shutdown signal Ignition switch ON (READY) 0 to 1.5 V
A27-13 (ILK) - F55-6 (E1) V - BR Interlock switch Ignition switch ON (IG), inverter terminal cover, high-voltage input cables and service plug grip installed correctly 0 to 1.5 V
Ignition switch ON (IG), inverter terminal cover, high-voltage input cables or service plug grip not installed 11 to 14 V
A27-14 (DB2) - F55-6 (E1) B - BR Shift lever position signal Ignition switch ON (IG), shift lever in D or B 11 to 14 V
Ignition switch ON (IG), shift lever not in D or B 0.5 to 1.5 V
A27-15 (R) - F55-6 (E1) SB - BR Shift lever position signal Ignition switch ON (IG), shift lever in R 11 to 14 V
Ignition switch ON (IG), shift lever not in R 0.5 to 1.5 V
A27-17 (PR) - F55-6 (E1) V - BR Shift lever position signal Ignition switch ON (IG), shift lever in P or R 11 to 14 V
Ignition switch ON (IG), shift lever not in P or R 0.5 to 1.5 V
A27-20 (N) - F55-6 (E1) Y - BR Shift lever position signal Ignition switch ON (IG), shift lever in N 11 to 14 V
Ignition switch ON (IG), shift lever not in N 0.5 to 1.5 V
A27-21 (P) - F55-6 (E1) BE - BR Shift lever position signal Ignition switch ON (IG), shift lever in P 11 to 14 V
Ignition switch ON (IG), shift lever not in P 0.5 to 1.5 V
A27-22 (MTH-) - F55-6 (E1) W - BR Communication signal from MG ECU to hybrid vehicle control ECU Ignition switch ON (IG)

Pulse generation

(Waveform 4)
A27-23 (MTH+) - F55-6 (E1) B - BR Communication signal from MG ECU to hybrid vehicle control ECU Ignition switch ON (IG)

Pulse generation

(Waveform 4)
A27-24 (HTM+) - F55-6 (E1) B - BR Communication signal from hybrid vehicle control ECU to MG ECU Ignition switch ON (IG)

Pulse generation

(Waveform 5)
A27-25 (HTM-) - F55-6 (E1) W - BR Communication signal from hybrid vehicle control ECU to MG ECU Ignition switch ON (IG)

Pulse generation

(Waveform 5)
A27-26 (DB1) - F55-6 (E1) L - BR Shift lever position signal Ignition switch ON (IG), shift lever in D or B 11 to 14 V
Ignition switch ON (IG), shift lever not in D or B 0.5 to 1.5 V
A27-28 (ST1-) - F55-6 (E1) BR - BR Brake cancel switch Ignition switch ON (IG), brake pedal depressed 0 to 1.5 V
Ignition switch ON (IG), brake pedal released 11 to 14 V
A27-30 (REQ-) - F55-6 (E1) W - BR MG ECU communication request signal Ignition switch ON (IG)

Pulse generation

(Waveform 6)
A27-31 (REQ+) - F55-6 (E1) B - BR MG ECU communication request signal Ignition switch ON (IG)

Pulse generation

(Waveform 6)
A27-32 (CLK-) - F55-6 (E1) W - BR MG communication clock signal Ignition switch ON (READY)

Pulse generation

(Waveform 7)
A27-33 (CLK+) - F55-6 (E1) B - BR MG communication clock signal Ignition switch ON (READY)

Pulse generation

(Waveform 7)
A27-34 (PNB) - F55-6 (E1) G - BR Shift lever position signal Ignition switch ON (IG), shift lever in P, N or B 11 to 14 V
F55-1 (SMRG) - F55-5 (E01) Y - W-B System main relay operation signal Ignition switch ON (IG)→Ignition switch ON (READY)

Pulse generation

(Waveform 8)
F55-3 (SMRP) - F55-5 (E01) W - W-B System main relay operation signal Ignition switch ON (IG)→Ignition switch ON (READY)

Pulse generation

(Waveform 8)
F55-4 (SMRB) - F55-5 (E01) SB - W-B System main relay operation signal Ignition switch ON (IG)→Ignition switch ON (READY)

Pulse generation

(Waveform 8)
F55-9 (ST2) - F55-6 (E1) B - BR Starter signal Ignition switch ON (IG) 0 to 1.5 V
F55-32 (BTH+) - F55-6 (E1) R - BR Communication signal from battery smart unit to hybrid vehicle control ECU Ignition switch ON (IG)

Pulse generation

(Waveform 9)
F55-33 (BTH-) - F55-6 (E1) G - BR Communication signal from battery smart unit to hybrid vehicle control ECU Ignition switch ON (IG)

Pulse generation

(Waveform 9)
F56-3 (BATT) - F55-6 (E1) BE - BR Constant power source Ignition switch ON (IG) 11 to 14 V
Ignition switch ON (READY) 11 to 15.5 V
F56-7 (PLKC) - F55-6 (E1) R - BR Shift lock release request signal Ignition switch ON (READY), brake pedal depressed 11 to 14 V
Ignition switch ON (READY), brake pedal released 0 to 1.5 V
F56-14 (ABFS) - F55-6 (E1) L - BR Airbag activation signal Ignition switch ON (READY)

Pulse generation

(Waveform 10)
F56-15 (EVSW) - F55-6 (E1) B - BR EV switch signal Ignition switch ON (IG), EV switch not operated 11 to 14 V
Ignition switch ON (IG), EV switch operated 0 to 1.5 V
F56-20 (THB) - F56-21 (ETHB) L - V Auxiliary battery temperature Ignition switch ON (IG), auxiliary battery temperature 25°C (77°F) 1.7 to 2.3 V
Ignition switch ON (IG), auxiliary battery temperature 60°C (140°F) 0.6 to 0.9 V
F56-24 (CA1L) - F55-6 (E1) W - BR CAN communication signal Ignition switch ON (IG)

Pulse generation

(Waveform 11)
F56-25 (CA1H) - F55-6 (E1) BE - BR CAN communication signal Ignition switch ON (IG)

Pulse generation

(Waveform 11)
F56-28 (TC) - F55-6 (E1) L - BR Diagnosis terminal Ignition switch ON (IG) 11 to 14 V
F56-29 (SI0) - F55-6 (E1) Y - BR HV battery blower fan operation signal Cooling fans operating

Pulse generation

(Waveform 12)
Cooling fans not operating 4.5 to 5.5 V
F56-30 (CA3N) - F55-6 (E1) W - BR CAN communication signal Ignition switch ON (IG)

Pulse generation

(Waveform 13)
F56-31 (CA3P) - F55-6 (E1) Y - BR CAN communication signal Ignition switch ON (IG)

Pulse generation

(Waveform 13)

  1. Oscilloscope waveforms

    Tech Tips

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


    1. A004EF4E01

      Waveform 1 (Inverter water pump assembly signal)

      Item Content
      Terminal

      CH1: A26-13 (IWP) - F55-6 (E1)

      CH2: A26-14 (NIWP) - F55-6 (E1)
      Equipment Setting 5 V/DIV., 20 ms./DIV.
      Condition Ignition switch ON (READY)

      Tech Tips

      Based on the HV coolant temperature, the IWP signal duty and the NIWP signal period change.

    2. A004FXBE01

      Waveform 2 (DC/DC operation monitor / voltage change signal)

      Item Content
      Terminal A26-16 (VLO) - F55-6 (E1)
      Equipment Setting 5 V/DIV., 50 ms./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

      The cycle will vary depending on the specified voltage of the DC/DC converter.

    3. A004FD0E01

      Waveform 3 (A/C communication signal)

      Item Content
      Terminal

      CH1: A26-10 (CLK) - F55-6 (E1)

      CH2: A27-9 (ITE) - F55-6 (E1)

      CH3: A27-8 (ETI) - F55-6 (E1)

      CH4: A27-11 (STB) - F55-6 (E1)
      Equipment Setting 10 V/DIV., 100 ms./DIV.
      Condition Ignition switch ON (READY), air conditioning system stopped

      Tech Tips

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

    4. A004FNWE01

      Waveform 4 (communication signal from MG ECU to hybrid vehicle control ECU)

      Item Content
      Terminal

      CH1: A27-23 (MTH+) - F55-6 (E1)

      CH2: A27-22 (MTH-) - F55-6 (E1)
      Equipment Setting 1 V/DIV., 200 μs./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

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

    5. A004FNWE01

      Waveform 5 (communication signal from hybrid vehicle control ECU to MG ECU)

      Item Content
      Terminal

      CH1: A27-24 (HTM+) - F55-6 (E1)

      CH2: A27-25 (HTM-) - F55-6 (E1)
      Equipment Setting 1 V/DIV., 200 μs./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

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

    6. A004F8FE02

      Waveform 6 (MG ECU communication request signal)

      Item Content
      Terminal

      CH1: A27-31 (REQ+) - F55-6 (E1)

      CH2: A27-30 (REQ-) - F55-6 (E1)
      Equipment Setting 1 V/DIV., 1 ms./DIV.
      Condition Ignition switch ON (IG)
    7. A004EK2E01

      Waveform 7 (MG communication clock signal)

      Item Content
      Terminal

      CH1: A27-33 (CLK+) - F55-6 (E1)

      CH2: A27-32 (CLK-) - F55-6 (E1)
      Equipment Setting 1 V/DIV., 1 μs./DIV.
      Condition Ignition switch ON (READY)
    8. A004ESEE02

      Waveform 8 (system main relay operation signal)

      Item Content
      Terminal

      CH1: F55-3 (SMRP) - F55-5 (E01)

      CH2: F55-4 (SMRB) - F55-5 (E01)

      CH3: F55-1 (SMRG) - F55-5 (E01)
      Equipment Setting 10 V/DIV., 200 ms./DIV.
      Condition Ignition switch ON (IG) → Ignition switch ON (READY)
    9. A004ERJE01

      Waveform 9 (communication signal from battery smart unit to hybrid vehicle control ECU)

      Item Content
      Terminal

      CH1: F55-32 (BTH+) - F55-6 (E1)

      CH2: F55-33 (BTH-) - F55-6 (E1)
      Equipment Setting 2 V/DIV., 500 μs./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

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

    10. A004FR0E01

      Waveform 10 (airbag activation signal)

      Item Content
      Terminal F56-14 (ABFS) - F55-6 (E1)
      Equipment Setting 5 V/DIV., 500 ms./DIV.
      Condition Ignition switch ON (READY)
    11. A004FM3E01

      Waveform 11 (CAN communication signal)

      Item Content
      Terminal

      CH1: F56-25 (CA1H) - F55-6 (E1)

      CH2: F56-24 (CA1L) - F55-6 (E1)
      Equipment Setting 1 V/DIV., 50 μs./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

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

    12. A004FLIE01

      Waveform 12 (HV battery blower fan operation signal)

      Item Content
      Terminal F56-29 (SI0) - F55-6 (E1)
      Equipment Setting 10 V/DIV., 1 ms./DIV.
      Condition Ignition switch ON (IG), during Active Test

      Tech Tips

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

    13. A004FM3E01

      Waveform 13 (CAN communication signal)

      Item Content
      Terminal

      CH1: F56-31 (CA3P) - F55-6 (E1)

      CH2: F56-30 (CA3N) - F55-6 (E1)
      Equipment Setting 1 V/DIV., 50 μs./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

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

    A004ESME02
    Text in Illustration
    *1 Inverter with Converter Assembly - -

    Tech Tips

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

    Inverter with converter assembly

    Terminal No.

    (Symbol)

    		 Wiring Color Terminal Description Condition Standard Condition
    A33-1 (IGCT) - A33-28 (GND1) B - W-B MG ECU power source Ignition switch ON (IG) 11 to 14 V
    A33-2 (IDH) - A33-28 (GND1) L - W-B PTC heater prohibit signal Ignition switch ON (IG) 4 to 6 V
    A33-3 (VLO) - A33-28 (GND1) R - W-B DC/DC operation monitor / voltage change signal Ignition switch ON (IG)

    Pulse generation

    (Waveform 1)
    A33-5 (CLK+) - A33-28 (GND1) B - W-B MG ECU communication clock signal Ignition switch ON (READY)

    Pulse generation

    (Waveform 2)
    A33-6 (REQ+) - A33-28 (GND1) B - W-B MG ECU communication request signal Ignition switch ON (READY)

    Pulse generation

    (Waveform 3)
    A33-7 (MTH+) - A33-28 (GND1) B - W-B Communication signal from MG ECU to hybrid vehicle control ECU Ignition switch ON (READY)

    Pulse generation

    (Waveform 4)
    A33-8 (HTM+) - A33-28 (GND1) B - W-B Communication signal from hybrid vehicle control ECU to MG ECU Ignition switch ON (READY)

    Pulse generation

    (Waveform 5)
    A33-9 (+B2) - A33-28 (GND1) G - W-B MG ECU power source Ignition switch ON (IG) 11 to 14 V
    A33-10 (+B) - A33-28 (GND1) G - W-B MG ECU power source Ignition switch ON (IG) 11 to 14 V
    A33-12 (NODD) - A33-28 (GND1) W - W-B DC/DC operation DC/DC converter operating normally 5 to 7 V
    DC/DC converter not operating normally 2 to 4 V
    DC/DC converter operation prohibited 0.1 to 0.5 V
    A33-15 (CLK-) - A33-28 (GND1) W - W-B MG ECU communication clock signal Ignition switch ON (READY)

    Pulse generation

    (Waveform 2)
    A33-16 (REQ-) - A33-28 (GND1) W - W-B MG ECU communication request signal Ignition switch ON (READY)

    Pulse generation

    (Waveform 3)
    A33-17 (MTH-) - A33-28 (GND1) W - W-B Communication signal from MG ECU to hybrid vehicle control ECU Ignition switch ON (READY)

    Pulse generation

    (Waveform 4)
    A33-18 (HTM-) - A33-28 (GND1) W - W-B Communication signal from hybrid vehicle control ECU to MG ECU Ignition switch ON (READY)

    Pulse generation

    (Waveform 5)
    A33-29 (GI) - A33-28 (GND1) B - W-B Camshaft position sensor signal Ignition switch ON (READY), with engine running

    Pulse generation

    (Waveform 6)
    A33-31 (HSDN) - A33-28 (GND1) B - W-B MG shutdown signal Ignition switch ON (READY) 0 to 1 V
    A33-35 (ILKI) - A33-28 (GND1) V - W-B Interlock switch signal Ignition switch ON (IG), inverter terminal cover, high-voltage input cables and service plug grip installed correctly Below 1 V
    Ignition switch ON (IG), inverter terminal cover, high-voltage input cables or service plug grip not installed 11 to 14
    A33-36 (ILKO) - A33-28 (GND1) LG - W-B Interlock switch signal Ignition switch ON (IG), inverter terminal cover, high-voltage input cables and service plug grip installed correctly Below 1 V
    Ignition switch ON (IG), inverter terminal cover, high-voltage input cables or service plug grip not installed 11 to 14
    C28-1 (MRF) - C28-2 (MRFG) BR - G Motor resolver signal Motor resolver running

    Pulse generation

    (Waveform 7)
    C28-3 (MSN) - C28-4 (MSNG) L - R Motor resolver signal Motor resolver running

    Pulse generation

    (Waveform 7)
    C28-6 (MCS) - C28-5 (MCSG) W - Y Motor resolver signal Motor resolver running

    Pulse generation

    (Waveform 7)
    C28-7 (GSN) - C28-8 (GSNG) L - R Generator resolver signal Generator resolver running

    Pulse generation

    (Waveform 8)
    C28-10 (GCS) - C28-9 (GCSG) W - Y Generator resolver signal Generator resolver running

    Pulse generation

    (Waveform 8)
    C28-11 (GRF) - C28-12 (GRFG) BR - G Generator resolver signal Generator resolver running

    Pulse generation

    (Waveform 8)

    Note

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

  2. Oscilloscope waveforms

    Tech Tips

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


    1. A004FXBE01

      Waveform 1 (DC/DC operation monitor / voltage change signal)

      Item Content
      Terminal A33-3 (VLO) - A33-28 (GND1)
      Equipment Setting 5 V/DIV., 50 ms./DIV.
      Condition Ignition switch ON (IG)

      Tech Tips

      The cycle will vary depending on the specified voltage of the DC/DC converter.

    2. A004EK2E01

      Waveform 2 (MG ECU communication clock signal)

      Item Content
      Terminal

      CH1: A33-5 (CLK+) - A33-28 (GND1)

      CH2: A33-15 (CLK-) - A33-28 (GND1)
      Equipment Setting 1 V/DIV., 1 μs./DIV.
      Condition Ignition switch ON (READY)
    3. A004F8FE02

      Waveform 3 (MG ECU communication request signal)

      Item Content
      Terminal

      CH1: A33-6 (REQ+) - A33-28 (GND1)

      CH2: A33-16 (REQ-) - A33-28 (GND1)
      Equipment Setting 1 V/DIV., 1 ms./DIV.
      Condition Ignition switch ON (READY)
    4. A004FNWE01

      Waveform 4 (communication signal from MG ECU to hybrid vehicle control ECU)

      Item Content
      Terminal

      CH1: A33-7 (MTH+) - A33-28 (GND1)

      CH2: A33-17 (MTH-) - A33-28 (GND1)
      Equipment Setting 1 V/DIV., 200 μs./DIV.
      Condition Ignition switch ON (READY)

      Tech Tips

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

    5. A004FNWE01

      Waveform 5 (communication signal from hybrid vehicle control ECU to MG ECU)

      Item Content
      Terminal

      CH1: A33-8 (HTM+) - A33-28 (GND1)

      CH2: A33-18 (HTM-) - A33-28 (GND1)
      Equipment Setting 1 V/DIV., 200 μs./DIV.
      Condition Ignition switch ON (READY)

      Tech Tips

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

    6. A004ENLE01

      Waveform 6 (Camshaft position sensor signal)

      Item Content
      Terminal A33-29 (GI) - A33-28 (GND1)
      Equipment Setting 5 V/DIV., 20 ms./DIV.
      Condition Ignition switch ON (READY), with engine running

      Tech Tips

      The pulse cycle becomes shorter as the engine speed increases.

    7. A004G7GE01

      Waveform 7 (motor resolver signal)

      Item Content
      Terminal

      CH1: C28-1 (MRF) - C28-2 (MRFG)

      CH2: C28-3 (MSN) - C28-4 (MSNG)

      CH3: C28-6 (MCS) - C28-5 (MCSG)
      Equipment Setting

      CH1: 10 V/DIV., 1 ms./DIV.

      CH2, 3: 5 V/DIV., 1 ms./DIV.
      Condition Motor resolver running

      Tech Tips

      Pulse cycle A becomes shorter as the rotor speed increases.

    8. A004G7GE01

      Waveform 8 (generator resolver signal)

      Item Content
      Terminal

      CH1: C28-11 (GRF) - C28-12 (GRFG)

      CH2: C28-7 (GSN) - C28-8 (GSNG)

      CH3: C28-10 (GCS) - C28-9 (GCSG)
      Equipment Setting

      CH1: 10 V/DIV., 1 ms./DIV.

      CH2, 3: 5 V/DIV., 1 ms./DIV.
      Condition Generator resolver running

      Tech Tips

      Pulse cycle A becomes shorter as the rotor speed increases.