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Cvrt query

  • 21-12-2020 3:26pm
    #1
    Lorne Malvo
    Registered Users, Registered Users 2 Posts: 185 ✭✭


    Hi guys, does anyone know what speeds the rear wheels are subject to during the brake test in a front wheel drive small commercial vehicle in the CVRT?


Comments

  • #2
    Dirty Nails
    Registered Users, Registered Users 2 Posts: 491 ✭✭Dirty Nails


    https://www.cvrt.ie/en/About-CVRT/Documents/Testers%20Manuals/HCV_Testers_Manual_2018_Web_Version_Rev_1%201.pdf

    Think there is a mention of 32 km/h

    But a wheel sensor will read at 1 rev/sec . Did you get the errors read,it needs to be repaired regardless?


  • #3
    Lorne Malvo
    Registered Users, Registered Users 2 Posts: 185 ✭✭Lorne Malvo


    Dirty Nails wrote: »
    https://www.cvrt.ie/en/About-CVRT/Documents/Testers%20Manuals/HCV_Testers_Manual_2018_Web_Version_Rev_1%201.pdf

    Think there is a mention of 32 km/h

    But a wheel sensor will read at 1 rev/sec . Did you get the errors read,it needs to be repaired regardless?

    Correct me if I am wrong but the CVRT test doesn't diagnose computer faults? ie it doesn't plug into the vehicle computer, but some failures are diagnosed using dash warning lights. in my case the abs light comes on after 50km/hr.


  • #4
    Dirty Nails
    Registered Users, Registered Users 2 Posts: 491 ✭✭Dirty Nails


    Lorne Malvo wrote: »
    Correct me if I am wrong but the CVRT test doesn't diagnose computer faults? ie it doesn't plug into the vehicle computer, but some failures are diagnosed using dash warning lights. in my case the abs light comes on after 50km/hr.

    No,it's not plugged in at test. When I said 1rev/sec(about 10km/h),thats the speed you'd spin the wheel by hand to measure sensor voltage with an AC voltmeter for checking sensors.

    ABS generally doesn't work under 50km(30m)/h so they prob won't see the light.
    Doesn't take from the fact though that your ABS isn't working & needs to be read to be repaired.


  • #5
    Lorne Malvo
    Registered Users, Registered Users 2 Posts: 185 ✭✭Lorne Malvo


    Dirty Nails wrote: »
    No,it's not plugged in at test. When I said 1rev/sec(about 10km/h),thats the speed you'd spin the wheel by hand to measure sensor voltage with an AC voltmeter for checking sensors.

    ABS generally doesn't work under 50km(30m)/h so they prob won't see the light.
    Doesn't take from the fact though that your ABS isn't working & needs to be read to be repaired.

    Surely the abs is tested though?


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