Back to Forum
Post a Response
    replies Archived Message

    Posted by UKAT5539 on September 22, 2005, 2:10 pm, in reply to "Landrover Discovery 2.5 tdi 1997 salljgm73va540957"

    Yes, and I hope this helps:
    (bear in mind the rear wiper wont operate if the drivers or rear door is open)!

    MULTI–FUNCTION UNIT (MFU) G4
    CIRCUIT OPERATION 1 REV: 11/97
    CIRCUIT OPERATION
    Multi–Function Unit (MFU)
    The multi–function unit (MFU) is mounted on the
    rear of the passenger compartment fusebox and has
    an input to operation of the following:
     Heated rear screen
     Heated front screen
     Courtesy lights
     Side and headlights
     Rear fog guard lamps
     Headlamp power wash
     Front wipers
     Rear wash/wipe

    Diagnostic Procedure
    1. Close all doors and the tailgate.
    NOTE: If the oil pressure switch goes open circuit
    (engine is started) during the following procedure,
    the MFU will exit the diagnostic mode immediately.
    2. Press and hold the heated rear screen switch
    and switch on the ignition.
    3. Release the heated rear screen switch within 2
    seconds and the MFU will beep to indicate that it’s in
    diagnostic mode 1.
    4. Press the heated rear screen switch; the MFU
    will beep twice. In turn, operate each of the following
    switches, heated front screen, rear fog guard lamps,
    side lights, headlights, front wiper and rear wiper.
    The MFU will beep twice each time a switch is oper-ated.
    5. Pressing the heated rear screen again will cause
    the MFU to enter diagnostic mode 2.
    6. The MFU will provide outputs to the following in
    order given below:
     Heated rear screen relay energised for 2 seconds
     Heated front screen energised for 2 seconds
     Courtesy lights energised for 2 seconds
     Dim dip relay energised for 2 seconds
     Rear fog guard lamp energised for 2 seconds
     Headlamp power wash energised for half a second
     Front wiper energised for half a second
     Rear wipe/wash energised for half a second
    7. The MFU will then exit the diagnostic mode.

    Message Thread:


Copyright © uk autotalk