1972 TCS Explanation and flow chart. - NCRS Discussion Boards

1972 TCS Explanation and flow chart.

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  • Bob H.
    Very Frequent User
    • July 31, 2000
    • 798

    1972 TCS Explanation and flow chart.

    My A/C is now charged but I have no 12vdc to the compressor. Does someone have an explanation of how the system works to get my 12 volts. All original parts are in place
  • Mark E.
    Extremely Frequent Poster
    • March 31, 1993
    • 4501

    #2
    Re: 1972 TCS Explanation and flow chart.

    Are you asking about TCS or AC?

    Either way, refer to the wiring diagram for an understanding of the circuit. The shop manual or AIM are two references. Dr Rebuild offers an easy to read illustrated schematic too.
    Mark Edmondson
    Dallas, Texas
    Texas Chapter

    1970 Coupe, Donnybrooke Green, Light Saddle LS5 M20 A31 C60 G81 N37 N40 UA6 U79
    1993 Coupe, 40th Anniversary, 6-speed, PEG 1, FX3, CD, Bronze Top

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    • Bob H.
      Very Frequent User
      • July 31, 2000
      • 798

      #3
      Re: 1972 TCS Explanation and flow chart.

      I think the TCS has some control on whether you get your 12 volts to the compressor
      Maybe I am calling it by the wrong name

      Comment

      • Patrick H.
        Beyond Control Poster
        • November 30, 1989
        • 11612

        #4
        Re: 1972 TCS Explanation and flow chart.

        The TCS has no effect on power to the AC compressor.
        Vice-Chairman (West), Michigan Chapter NCRS
        71 "deer modified" coupe
        72 5-Star Bowtie / Duntov coupe. https://www.flickr.com/photos/124695...57649252735124
        2008 coupe
        Available stickers: Engine suffix code, exhaust tips & mufflers, shocks, AIR diverter valve broadcast code.

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        • Leonard M.
          Very Frequent User
          • September 7, 2009
          • 236

          #5
          Re: 1972 TCS Explanation and flow chart.

          Probably the fuse. It plugs into the a/c wiring to the compressor (green wire). No difference in appearance shorted or not.
          First picture see in center, second picture; bottom center.
          A/C Thermal Limiter Module Switch Fuse 6551258
          Items for sale by spark-surplus | eBay
          DSCN4615.jpghose12.jpg

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