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Terminals Of Ecu

  1. CHECK TELEVISION CAMERA ASSEMBLY 
    Fig 1: Identifying Television Camera Assembly Connector Terminal Y8
    G05299989Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the Y8 camera connector.
    2. Measure the voltage and resistance between each terminal of the wire harness side connector.
      CONNECTOR TERMINAL REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CGND (Y8-3) - Body ground W - Body ground Ground Always Below 1 Ω
      CB+ (Y8-4) - CGND (Y8-3) B - W Power source Engine switch on (IG), shift lever R position Approx. 6 V

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

    3. Reconnect the Y8 camera connector.
    4. Measure the voltage and frequency between each terminal of the connector.
      CONNECTOR TERMINAL REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CV+ (Y8-2) - CV- (Y8-1) R - Shielded Display signal Engine switch on (IG), shift lever R position See waveform

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

    5. Using an oscilloscope, check the waveform.

      Waveform 

      WAVEFORM REFERENCE CHART

      Item Content
      Symbols (Terminal No.) CV+ (Y8-2) - CV- (Y8-1)
      Tool Setting 0.2 V/DIV., 0.2 μsec/DIV.
      Condition Engine switch on (IG), shift lever in R position
    Fig 2: Oscilloscope Waveform Graph
    G04945285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK MULTI-DISPLAY (See  TERMINALS OF ECU  )