Maxxforce 7

Discussion in 'International Forum' started by dcwjr, Apr 24, 2015.

  1. dcwjr

    dcwjr Light Load Member

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    2
    Jan 11, 2013
    0
    Have an aft fuel shutoff valve open/shorted to ground code- installed new valve and engine came back with same code, spn3482 fmi4
     
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  3. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Are you sure this is a Maxxforce 7? The code you have is for an engine with down stream injection. Maxxforce 7 uses in-cylinder injection and does not have the metering unit with the fuel shut off valve. That valve is controlled by the ACM, not the ECM. The ACM is for "aftertreatment control module" and it is located at the bottom of the cab on the outside right under the drivers door. The wiring runs in behind the fender and sometimes up under the frame rail. There are lots of locations for the wiring to rub through. Open up areas where the harness zig-zags back and forth because it was too long and they just tied it up. Make sure the wires did not rub through on the inside of the loom. 99% of these codes are from wiring problems. Also make sure to check the pins inside the connectors to make sure they are in good condition and not pulled out.
     
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  4. dcwjr

    dcwjr Light Load Member

    58
    2
    Jan 11, 2013
    0
    This is a Maxforce DT any info would be greatly appreciated
     
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