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    Posted by Steve Norman on February 16, 2007, 1:30 pm, in reply to "Re: Range Rover 2.5TD (BMW) no start"

    Hi Pere,

    If the dash isn't saying 'engine immobilised' & cranking is enabled, then the BeCM is happy with the key signal & the BeCM is unimmobilised.

    Your problem appears to be a fault with the signal from BeCM to EDC ECU, see extract below. Thus the EDC ECU is still immobilised, not the BeCM.
    You may like to try rematching the ECU to BeCM & see if this re-establishes the signal.

    Extract relating to immo signal:
    On 95 MY vehicles the BeCM transmits a single
    remobilisation code to the EDC ECM. When the
    BeCM is satisfied that the vehicle is in an unarmed
    state, engine cranking is permitted. There is no MIL
    warning lamp illumination to confirm that the code has
    been accepted.
    On 96MY onwards Diesel vehicles, as on 95MY
    vehicles, the EDC ECM does not respond to confirm
    that the remobilisation signal from the BeCM has been
    accepted. When the vehicle is in an unarmed
    condition, the BeCM continually transmits the engine
    remobilisation code at 144 ms intervals from the
    ignition being turned on. The code originates from the
    EDC ECM with each ECM having a different code. If a
    new EDC ECM or BeCM is fitted, TestBook must be
    used to input the code to the BeCM before the ignition is turned on.

    HTH
    Regards
    Steve

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