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Terminals Of Ecu

  1. CHECK POWER SOURCE CONTROL ECU 
    Fig 1: Identifying ECU Connector Terminal
    G02919636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P6 ECU connector.
    2. Measure the resistance and voltage of each terminal of the wire harness side connector.

      Standard: 

      TERMINAL DESCRIPTION & CONDITION

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

    Standard: 

    TERMINAL DESCRIPTION & CONDITION

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

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

  2. CHECK TRANSPONDER KEY ECU ASSY 
    Fig 2: Identifying Transponder Key ECU Connector Terminal
    G02919637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T5 ECU connector.
    2. Measure the resistance and voltage between each terminal of the wire harness side connector.

      Standard: 

      TERMINAL STANDARD CONDITION

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

    Standard: 

    TERMINAL STANDARD CONDITION

    Symbols Terminal No. Wiring Color Terminal Description Condition Specified Condition
    CUWS (T5-5) - GND (T5-22) B - W-B Unlock warning switch No key in key slot --> Key inserted 10 to 14 V Below 1 V
    VC5 (T5-20) - GND (T5-22) Y - W-B Power source No key in key slot --> Key inserted 0 V 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: Identifying Hybrid Vehicle Control ECU Connector Terminal
    G02919638Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the H14, H15, H16 and H17 ECU connectors.
    2. Measure the resistance and voltage between each terminal of the connectors.

    Standard: 

    TERMINAL STANDARD CONDITION

    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 (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 Constant 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 Constant Below 1 Ω
    GND2 (H14-4) - Body ground W-B - Body ground Ground Constant Below 1 Ω

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

  4. CHECK TRANSMISSION CONTROL ECU 
    Fig 4: Identifying Transmission Control ECU Connector Terminal
    G02919639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T4 ECU connector.
    2. Measure the resistance and voltage of each terminal of the wire harness side connector.

    Standard: 

    TERMINAL STANDARD CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    BATT (T4-13) - Body ground L - Body ground +B power supply Constant 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 Constant Below 1 Ω
    E01 (T4-3) - Body ground W-B - Body ground Ground Constant Below 1 Ω
    E02 (T4-2) - Body ground W-B - Body ground Ground Constant Below 1 Ω

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

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