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Terminals Of Ecu

  1. CHECK GATEWAY ECU 
    1. Disconnect the G1 connector.
      2. Fig 1: Identifying Gateway ECU Connector Terminals
      G04477275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BATT (G1-10) - Body ground Y - Body ground +B (BATT) power supply Always 10 to 14 V
      IG (G1-1) - Body ground B - Body ground Ignition power supply Power switch ON (IG) 10 to 14 V
      ACC (G1-2) - Body ground P - Body ground ACC power supply Power switch ON (ACC) 10 to 14 V
      SIL (G1-7) - Body ground W - Body ground Bus "+" line During transmission Pulse generation
      MPD2 (G1-12) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      MPD1 (G1-3) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      GTX+ (G1-6) - Body ground B - Body ground AVC-LAN line Always 10 kΩ or higher
      GTX- (G1-21) - Body ground W - Body ground AVC-LAN line Always 10 kΩ or higher
      GND (G1-24) - 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.

  2. CHECK A/C ECU 
    1. Disconnect the A8 connector.
      2. Fig 2: Identifying A/C ECU Connector Terminals
      G04477276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B (A8-6) - Body ground Y - Body ground +B power supply Always 10 to 14 V
      MPX+ (A8-3) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      MPX2+ (A8-11) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      GND (A8-1) - 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. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU) 
    1. Disconnect the B5 ECU connector.
    2. Disconnect the 1A, 1E and 1G junction block connectors.
      3. Fig 3: Identifying Driver Side Junction Block (Main Body ECU) Connector Terminals
      G04477277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the voltage and resistance of the wire harness side connectors.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ECUB (1A-30) - Body ground R - Body ground +B (ECUB) power supply Always 10 to 14 V
      MPX1 (1G-9) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      MPX2 (B5-15) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      GND (1E-17) - 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.

  4. CHECK TRANSPONDER KEY ECU 
    1. Disconnect the T5 ECU connector.
      2. Fig 4: Identifying Transponder Key ECU Connector Terminals
      G04477278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IG (T5-4) - Body ground O - Body ground +B (IG) power supply Always 10 to 14 V
      MPX1 (T5-17) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      MPX2 (T5-16) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      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.

  5. CHECK TRANSMISSION CONTROL ECU 
    1. Disconnect the T4 ECU connector.
      2. Fig 5: Identifying Transmission Control ECU Connector Terminals
      G04477279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B (T4-1) - Body ground L - Body ground +B power supply Always 10 to 14 V
      MPX1 (T4-19) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      MPX2 (T4-18) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      E1 (T4-15) - 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.

  6. CHECK CERTIFICATION ECU (WITH SMART KEY) 
    1. Disconnect the S11 ECU connector.
      2. Fig 6: Identifying Certification ECU (With Smart Key) Connector Terminals
      G04477280Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B1 (S11-1) - Body ground R - Body ground +B power supply Always 10 to 14 V
      MPX1 (S11-31) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      MPX2 (S11-32) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      E (S11-17) - 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.

  7. CHECK COMBINATION METER 
    1. Disconnect the C10 meter connector.
      2. Fig 7: Identifying Combination Meter Connector Terminals
      G04477281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B (C10-21) - Body ground Y - Body ground +B power supply Always 10 to 14 V
      MPX+ (C10-24) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      MPX- (C10-25) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      SE (C10-14) - Body ground BR - Body ground Ground Always Below 1 Ω

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

  8. CHECK POWER SOURCE CONTROL ECU 
    1. Disconnect the P6 ECU connector.
      2. Fig 8: Identifying Power Source Control ECU Connector Terminals
      G04477282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      AM1 (P6-33) - Body ground R - Body ground +B (AM1) power supply Always 10 to 14 V
      MPX1 (P6-7) - Body ground GR - Body ground BEAN line Always 10 kΩ or higher
      MPX2 (P6-24) - Body ground B - Body ground BEAN line Always 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.

  9. CHECK TIRE PRESSURE MONITOR ECU 
    1. Disconnect the T11 ECU connector.
    2. Measure the resistance of the wire harness side connector.
      Fig 9: Identifying Tire Pressure Monitor ECU Connector Terminals
      G04477283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TERMINALS DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IG (T11-1) - Body ground B - Body ground Power supply Always 10 to 14 V
      MPX1 (T11-6) - Body ground W - Body ground BEAN line Always 10 kΩ or higher
      MPX2 (T11-12) - Body ground B - Body ground BEAN line Always 10 kΩ or higher
      GND (T11-7) - 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.

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