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    350Z Engine Control Unit (ECU) REMOVAL / RE-INSTALL


    Number of posts : 299
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    Registration date : 2009-03-03

    350Z Engine Control Unit (ECU) REMOVAL / RE-INSTALL

    Post  jesse on Tue Mar 17, 2009 12:12 pm

    Tools require for ECU removal and re-installing.
    1. 10 mm socket and ratchet (or equivalent)
    2. Philip (cross) screw driver
    3. Flat head screw driver
    Before you start lower your driver and passenger side window down about 1-2
    inches. You can lower it more, but at the very minimum 1-2 inches. This is done
    so when you disconnect your battery the doors will open smoothly.
    Start by disconnecting the battery by removing the negative
    terminal using the 10 mm socket.
    Next open up the passenger side door and remove the
    floor/doortrim by gently pulling upwards. Start from the rear
    and work towards the front.
    Find the plastic nut that holds the side kick panel. Remove it
    by turning counter-clockwise. No tools are needed. It's not
    on very tight. Put all loose hardware (nuts, bolts) into the tray
    behind the shifter.
    Use the flat head screw driver (if need) and pry the front
    edge of theside kick panel outwards (towards the driver side)
    and remove the panel. Be careful of where you put the screwdriver. It CAN break
    the plastic.
    Locate the screw under the kick panel. Use the philips
    (cross) screwdriver to remove it. You DO NOT need to
    remove the 10 mm nut.
    Now pull out the cup holder in the dash area and insert the flat screw driver into
    it. Gently pry downward on the inner clip and pull out the cup holder. The clip is
    extremely hard to see, trust me it's there. (See pictures
    Hidden behind the cup holder is a 10 mm bolt. Remove it
    with the10mm socket and ratchet.
    Start from the bottom right corner and
    pull out the sub-dash panel. It is held on
    by several clips. Work your way counterclockwise
    until all clips are pulled out of
    their holders. The panel drops down and
    pulls out.
    Look up underneath the dash and you will now see the
    350Z's ECU (Engine Control Unit).
    To disconnect the harness from the
    ECU,simply squeeze the tab together
    (at the end of the connector) and gently
    pull it down and over. The connector will
    unhook itself. Pull the connector down
    and leave it hanging.
    There are now 2 more nuts remaining until the ECU comes
    out. Look up towards the ECU and you will see a 10mm nut and another one
    towards the firewall. Remove them and put the nuts in the tray behind the shifter.
    (Pictures below)
    The ECU should come down easily with the
    bracket. Remove the bracket from the ECU
    and put all the nuts back onto the bracket.
    The ECU is now ready to be sent in for Flash
    These are all the parts you should have left over for the
    removal of the ECU.
    Installation is in the reverse order. After the ECU and all panels are installed.
    There is no need to reset the ECU.

      Current date/time is Thu Mar 21, 2019 5:18 am