Wiring diagram diagnostic lines

Discussion in 'General Motoring' started by Per Hauge, Oct 19, 2004.

  1. Per Hauge

    Per Hauge Guest

    Does anyone happens to have wiring information on diagnostic datalines on a
    1998 volvo 945.
    I'm specifically interested in which sockets in the 16 pole diagnostic
    connector that connects to the different ECU's.

    Per Hauge
    Per Hauge, Oct 19, 2004
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  2. Per, I presume you are talking about the socket in the bottom of the between
    seats locker/console. The connections from this are pin 1 - EZK Ignition
    Module; pin 3 - pin 1 of Immobiliser Control Module (fuel cut-off
    condition); pin 4 and pin 5 - earth/ground; pin 7 - pin 3 of Immobiliser,
    SRS Crash Sensor and Driver's Seat Control Module; pin 12 - ABS Control
    Module; pin 13 - Cruise Control; pin 16 - power from battery +ve via fuse 7.
    Pin 2 of the Immobiliser Control Module connects to pin 12 of the LH
    Jetronic 2.4 Control module (fuel cut-off when crashed).

    Hope that this is of use to you, it comes from the 1997 940 Green Wiring
    Book and is the later version of the two shown.

    All the best, Peter. (700/900/90 register keeper, VOC [UK].
    Peter K L Milnes, Oct 20, 2004
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  3. Per Hauge

    Per Hauge Guest

    Thanks a lot Peter, for a precise describtion.
    It seems to me from what you write that the LH Jetronic 2.4 pin 12, which is
    supposed to be diagnostic terminal does not have a direct connection to the
    diagnostic connector in the console, but goes via the immobiliser pin 2 and
    pin 1, and then on to Pin 3 of the connector.
    I'm not sure what you mean by fuel cut-off condition, is it the immobiliser
    that makes a signal to the LH 2.4, or the opposite. Can it be seen from the
    diagram what function there is between pin 2 and pin 1 on the immobiliser
    Would it be possible for you to mail me a scanned copy of the diagram on the
    datalines and fuel injection system?

    Per Hauge, Oct 20, 2004
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