2006 4400 - Inop A/C - SOLVED

Discussion in 'International Forum' started by dieseldan6991, Nov 22, 2020.

  1. dieseldan6991

    dieseldan6991 Bobtail Member

    3
    2
    Nov 1, 2018
    0
    Hey everyone,

    This is one that is completely puzzling me. Have replaced the following components:

    Control Head
    ESC ( programmed to latest calibration)
    A/C compressor, condenser, dryer, orifice tube, both thermistors (w/ new connectors) etc

    A/C clutch will not engage.

    If I command it on with DLB it does function.

    The only active code I have is for the fresh air / recirculation door actuator.

    When monitoring the thermistor values via DLB they consistently read at 0.

    Any help or advice is greatly appreciated. Thank you!
     
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  3. dieseldan6991

    dieseldan6991 Bobtail Member

    3
    2
    Nov 1, 2018
    0
    Problem solved!

    Just in case anyone ever encounters this issue the problem was at the zero volt reference splice (4830).

    The wires broke internally.

    Simple solution connected those wires together with shrink butt connector.
     
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