acelleration problem 2006 Volvo

Discussion in 'Trucks [ Eighteen Wheelers ]' started by fosterb, Mar 2, 2011.

  1. fosterb

    fosterb Bobtail Member

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    Mar 2, 2011
    Dallas TX
    0
    2006 volvo no acceleratio nshowing a defalt code 5 v supply Has anyone had this happen? What is the problem?:biggrin_25513:
     
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  3. Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    Check VECU wiring from VECU to Gas pedal. May be wires are short.

    Any sensor of VECU if short blocks gas pedal.

    Pull fuse panel and find VECU under it.

    The next step - get wiring diagram, AVOM, separate VECU connectors and find sensor that is short. Check outdoor temoarature sensor (on some trucks in bumper, on some - in fender, on some trucks in rear view morror).

    If you need wiring diagram I can post you VECU diagramm tommorow
     
  4. The_Judge

    The_Judge Light Load Member

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    May 25, 2008
    Montreal, Quebec
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    What is the conection between acceleration and ambient temperature sensor ? I'm asking coz I have no reading on ambient temperature. I replaced the sensor and still not working.
     
  5. Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    they share 5V power supply.

    [​IMG]


    Unit location is on this diagram. A17-VECU.
    [​IMG]


    If any sensor wiring is short to ground ore sensor is short inside all the 5V supplied sensors wont working.

    First I do, I remove VECU, connect it on desk with 12 V and check for 5V. If it is not damaged internally I separate connector and check all sensor 5V supply for resistance to ground to find what sensor is short to ground. If I find it, I disconnect this sensor if and check againe for wiring damage. if wiring is good I replace sensor. Really to check all is about 1-2 hours.
     
    The_Judge Thanks this.
  6. michiganmade

    michiganmade Bobtail Member

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    Aug 3, 2016
    0
    Change xyshifter and accelerater pedal truck will only go 1st to 2nd gear and back to 1st gear. 2007 volvo 780 autoshift. Can anyone help.
     
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