Electrical fault in a ’99 2.5 20V V70.

Discussion in 'Volvo V70' started by Volvoquery, Nov 2, 2008.

  1. Volvoquery

    Volvoquery Guest

    The first sign of the problem was a flat battery after few days of
    non-use. Further investigation indicates that the engine system
    circuit is not shutting down when the ignition is turned off. This is
    evident in that the relay is not powering down and resetting and as a
    result the engine management components continue to draw power.
    However, if the Engine System Relay (in the Main Fuse Box) is
    disconnected and reconnected, or the battery is momentarily
    disconnected, the circuit shuts down and remains shut down until the
    ignition switch is powered on. The problem will then reoccur when the
    ignition switch is turned off.
    The relay itself is OK, the issue is that the relay is still powered
    when the ignition switch is switched off. Whatever is activating that
    relay is not reset until the battery is momentarily disconnected or
    the relay itself is disconnected and reconnected.
     
    Volvoquery, Nov 2, 2008
    #1
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