Back to Forum
Post a Response
    replies Archived Message

    Posted by dave jackson on July 12, 2005, 11:27 am, in reply to "Re: Renault Master 2.2 DCI 2001 NON Start manufacturers fault code"

    Update so far
    Because I cannot delete fault code DF083 fuel pressure solenoid valve I decided to remove ECU and test wiring from solenoid to ECU, continuity is good but I have a constant 3.5v at this pin B1L. Closest pin data I can find to this model on Autodata is 2001megane 1.9 DCI 90 % of pin data seems correct but I think Air Mass is wired different. On pin B1L I should be seeing a digital sinewave, ECU switched earth but test should be at idling and my tests are all at cranking speed, at this pin I have 3.5 volts no switching.
    Also I have tested all injectors on the scope but they have no output.
    Have tested all earth’s and all 12v feeds to ECU all OK, engine EC relay tests OK.
    Tested fuel pressure sensor, fuel temp sensor, air temp sensor, air mass all ok,
    Have also tested camshaft sensor at ECU pin C1c and C4k tested OK.
    Tested Crankshaft sensor ECU pin B3g and B3h test data at idling says analogue sinewave 5 to 8V and one reversed sinewave. My test is at cranking speed only I have both sinewaves but only 0.4v output.

    Also on removal of the ECU I found that the ECU loom had chaffed through to the van chassis. One wire was broken and two were chaffed to the bare wire, concerned wires were.
    A4e Vehicle speed signal (broken)
    B1g fuel temp sensor (chaffed)
    B3J fuel temp sensor (chaffed)

    Repaired all wiring but no difference.
    So my questions to you boys, can anyone tell me if I should see pin B1L switching at crank speed and would the Crank sensor have that low of an output 0.4 v at crank speed.
    I have also decided to send ECU for testing, bearing in mind that I cannot delete fault code for fuel solenoid, constant fault even with ignition on.

    Also found out today that this van broke down on New Years Eve and has never ran since, owner has so far spent £3.500 with two other garages and an Auto leci.

    Thanks for any help will let you know the fix if we ever get there.
    Rgds
    Dave

    Message Thread:


Copyright © uk autotalk