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Terminals Of Ecu

  1. CHECK POWER SOURCE CONTROL ECU 
    Fig 1: Identifying P6 ECU Connector
    G02617826Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P6 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      SYMBOLS CONDITION AND SPECIFIED CONDITION SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      AM1 (P6-33) - Body ground R - Body ground +B power supply Always 10 to 14 V
      AM2 (P6-12) - Body ground W - Body ground +B power supply Always 10 to 14 V
      CDSW (P6-25) - Body ground L - Body ground Key condition No key in key slot Below 1 Ω
      CDSW (P6-25) - Body ground L - Body ground Key condition Key inserted 10 kΩ or higher
      SSW1 (P6-14) - Body ground B - Body ground Power switch signal Power switch pushed Below 1 Ω
      SSW1 (P6-14) - Body ground B - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      SSW2 (P6-37) - Body ground Y - Body ground Power switch signal Power switch pushed Below 1 Ω
      SSW2 (P6-37) - Body ground Y - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      GND2 (P6-6) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the P6 ECU connector.
    4. Measure the resistance and voltage of the connector.

      Standard: 

      SYMBOLS CONDITION AND SPECIFIED CONDITION SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      SOL1 (P6-3) - GND2 (P6-6) P - W-B Power switch signal Brake pedal is not depressed, power switch ON (ACC) 0 V
      SOL1 (P6-3) - GND2 (P6-6) P - W-B Power switch signal Brake pedal is not depressed, power switch ON (IG) 10 to 14 V
      SOL2 (P6-20) - GND2 (P6-6) GR - W-B Power switch signal Always Below 1 Ω
      ACCD (P6-11) - GND2 (P6-6) G - W-B ACC signal Power switch OFF 0 V
      ACCD (P6-11) - GND2 (P6-6) G - W-B ACC signal Power switch ON (ACC) 10 to 14 V
      IG1D (P6-34) - GND2 (P6-6) B - W-B IG1 signal Power switch ON (ACC) 0 V
      IG1D (P6-34) - GND2 (P6-6) B - W-B IG1 signal Power switch ON (IG) 10 to 14 V
      IG2D (P6-35) - GND2 (P6-6) V - W-B IG2 signal Power switch ON (ACC) 0 V
      IG2D (P6-35) - GND2 (P6-6) V - W-B IG2 signal Power switch ON (IG) 10 to 14 V
      STP (P6-1) - GND2 (P6-6) L - W-B Stop lamp signal Brake pedal depressed 10 to 14 V
      STP (P6-1) - GND2 (P6-6) L - W-B Stop lamp signal Brake pedal released 0 V

    If the result is not as specified, the ECU may have a malfunction.

  2. CHECK TRANSPONDER KEY ECU ASSY 
    Fig 2: Identifying T5 ECU Connector
    G02617827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T5 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      SYMBOLS CONDITION AND SPECIFIED CONDITION SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CPUB (T5-3) - GND (T5-22) L - W-B Battery Always 10 to 14 V
      IG (T5-4) - GND (T5-22) O - W-B Power switch (IG) Power switch OFF 0 V
      IG (T5-4) - GND (T5-22) O - W-B Power switch (IG) Power switch ON (IG) 10 to 14 V
      ACC (T5-12) - GND (T5-22) P - W-B Power switch (ACC) Power switch OFF 0 V
      ACC (T5-12) - GND (T5-22) P - W-B Power switch (ACC) Power switch ON (ACC) 10 to 14 V
      CUWS (T5-5) - GND (T5-22) B - W-B Halfway switch No key in key slot 10 kΩ or higher
      CUWS (T5-5) - GND (T5-22) B - W-B Halfway switch Key inserted Below 1 Ω
      AGND (T5-7) - GND (T5-22) P - W-B Ground Always Below 1 Ω
      GND (T5-22) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the T5 ECU connector.
    4. Measure the voltage of the connector.

      Standard: 

      SYMBOLS CONDITION AND SPECIFIED CONDITION SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CUWS (T5-5) - GND (T5-22) B - W-B Halfway switch No key in key slot 10 to 14 V
      CUWS (T5-5) - GND (T5-22) B - W-B Halfway switch Key inserted Below 1 V
      VC5 (T5-20) - GND (T5-22) Y - W-B Power source No key in key slot 0 V
      VC5 (T5-20) - GND (T5-22) Y - W-B Power source Key inserted 4.6 to 5.4 V

      If the result is not as specified, the ECU may have a malfunction.

  3. CHECK HYBRID VEHICLE CONTROL ECU 
    Fig 3: Disconnecting H14, H15, H16 And H17 ECU Connectors
    G02617828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the H14, H15, H16 and H17 ECU connectors.
    2. Measure the resistance and voltage of the connectors.

      Standard: 

      SYMBOLS CONDITION AND SPECIFIED CONDITION SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ST2 (H14-5) - GND1 (H14-1) Y - W-B Ignition start control signal input Power switch ON (READY) 10 to 14 V
      IGSW (H14-7) - GND1 (H14-1) O - W-B Ignition ready control signal input Power switch ON (IG) 10 to 14 V
      BATT (H15-6) - GND1 (H14-1) Y - W-B Battery Always 10 to 14 V
      +B1 (H16-7) - GND1 (H14-1) L - W-B Ignition power supply Power switch ON (IG) 10 to 14 V
      +B2 (H16-6) - GND1 (H14-1) L - W-B Ignition power supply Power switch ON (IG) 10 to 14 V
      GND1 (H14-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      GND2 (H14-4) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, the ECU may have a malfunction.

  4. CHECK TRANSMISSION CONTROL ECU 
    Fig 4: Identifying T4 ECU Connector
    G02617829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T4 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      SYMBOLS CONDITION AND SPECIFIED CONDITION SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BATT (T4-13) - Body ground L - Body ground +B power supply Always 10 to 14 V
      +B (T4-1) - Body ground L - Body ground Ignition power supply Power switch ON (IG) 10 to 14 V
      E1 (T4-15) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E01 (T4-3) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E02 (T4-2) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, the ECU may have a malfunction.

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