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Terminals Of Ecu

  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (A/C CONTROL ASSEMBLY) 
    Fig 1: Identifying ECU Connector Terminal
    G05293504Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A10 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.
      ECU CONNECTOR TERMINAL SPECIFIED CONDITION RESISTANCE AND VOLTAGE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IG (A10-1) - Body ground L - Body ground Ignition (power supply) Ignition switch ON 10 to 14 V
      +B (A10-8) - Body ground W-R - Body ground Battery (power supply) Always 10 to 14 V
      GND (A10-14) - 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 LUGGAGE ROOM JUNCTION BLOCK (LUGGAGE ROOM JUNCTION BLOCK ECU) 
    Fig 2: Identifying Luggage Room Junction Block ECU
    G05293505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 6A, 6F and 6L junction block connectors.
    2. Disconnect the L24 ECU connector.
    3. Measure the resistance and voltage of the wire harness side connectors.
      ECU CONNECTOR TERMINAL SPECIFIED CONDITION RESISTANCE AND VOLTAGE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MPX-IG (6F-13) - Body ground V-W - Body ground Ignition power supply Ignition switch ON 10 to 14 V
      MPX-B (6F-12) - Body ground L-B - Body ground +B power supply Always 10 to 14 V
      P-GND (6A-2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      SG (L24-5) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DEF (6L-1) - Body ground W-R - Body ground +B power supply Always 10 to 14 V

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