Help with 355 M5.2 Engine Harness connections | FerrariChat

Help with 355 M5.2 Engine Harness connections

Discussion in '348/355' started by tashier, Feb 16, 2009.

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  1. tashier

    tashier Formula Junior

    Sep 8, 2008
    573
    Oregon
    Full Name:
    Sean
    #1 tashier, Feb 16, 2009
    Last edited: Feb 16, 2009
    I probably have it right but I don't want to make any assumptions and damage anything or have to troubleshoot later. I didn't dissassemble this thing so therefore not 100% sure on the connections. Some of these I want to assume blue goes with blue, black with black etc. but that doesn't always seem to be the case. The questions are really around the water manifold, TPS sensor, cam sensor and firing sensor.
     
  2. tashier

    tashier Formula Junior

    Sep 8, 2008
    573
    Oregon
    Full Name:
    Sean
    #2 tashier, Feb 16, 2009
    Last edited by a moderator: Sep 7, 2017
    In this pic the bottom circle has a

    blue 2 pin connector going to a blue connector on the water manifold,
    the one just above it is a grey 2 pin connector going to a blue connector on the water manifold.

    The large circle is the TPS, CPS and Firing sensor connections. In this circle, the

    grey 3 pin connector is connected to black connector of the TPS,
    the blue 3 pin connector is connected to the blue connector of the CPS and
    the black 3 pin connector is connected to the black connector of the Firing sensor.

    Is this correct? Sometimes the colors match, sometimes not. I just want to make darn sure it's right because they can reach an connect to other connectors.
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  3. eric355

    eric355 Formula 3
    Silver Subscribed

    Nov 30, 2005
    1,235
    Toulouse (France)
    Full Name:
    Eric DECOUX

    Not sure the connectors colors are always the same, probably but ... Also, how are you sure you have not swapped the injectors connectors ...
    In such a case, my preference would be to perform continuity checks between all the doubtful connectors and the Motronic connector. A complete diagram, with the pin functions, is available for the 5.2. Use it, it may avoid you some difficult (and/or expensive) investigations. Send me a PM if you do not have this electrical diagram.
     
  4. tashier

    tashier Formula Junior

    Sep 8, 2008
    573
    Oregon
    Full Name:
    Sean

    The injector connectors are all labeled, 1-8. That was the easy part. I don't have the wiring diagram but would love to have it if you want to send it to me.
     
  5. tashier

    tashier Formula Junior

    Sep 8, 2008
    573
    Oregon
    Full Name:
    Sean
    Thanks to Eric for sending me the wiring diagram. After toning out the connectors I had a couple plugged in the wrong places. Glad I figured it out ahead of time.
     

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