Volks AutosJMB Retrofits
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  • 1 Post By markie A3

Thread: aircon

  1. #1
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    aircon

    I know theres a specific air con section, but ive asked this question already..

    Will Vcds detect if the compressor isnt running, my aircon isnt blowing cool/cold air at all. I'm not really sure what kind of noise the compressor makes so a noise test isnt much help. AOnce again sorry to ask in the vcds section

    Thanks Mark

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  3. #2
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    yes look in address 08 open label file look at compressor draw amperage for operation
    a/c gauges are better for diagnosis but mvb will show you whats going on and the system pressure as well from the readings at the pressure switch

  4. #3
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    Thanks a8 tech......
    If its not running/faulting, will it show as a fault when the car is scanned?

  5. #4
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    unlikely unless you have low pressure because the comp is duty cycled so the signal will still go as the a/c pulley anti seize pulley breaks away if the pump is foobar.
    Check the line pressure in the mvb, even with the a/c off then there should be some pressure

    If you have sufficient pressure but the a/c will not start up without a fault code and the amperage stays constant then it normally indicates the pump but at this stage if pressure is present I would connect the a/c gauges to see a more in depth status

  6. #5
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    Thanks for you help fella
    a8 tech back likes this.

  7. #6
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    no worries hope it makes sense

 

 

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