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Thread: A/c not working

  1. #1
    Established Member Two Rings
    Join Date
    May 29 2013
    AZ Member #
    116154
    Location
    Jacksonville Fl

    A/c not working

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    I had the head replaced about three weeks ago and not the ac is not working now. Would the mech. Have to disconnect anything to work on the head? I checked some of the codes on my climate controls menu and I think the sensor in the glove compartment is bad (was going out last summer) . But I checked the # 22 Cycle condition of A/C Refrigerant High Pressure Switch (F 118)=0. and #29 A/C Compressor speed in rpm (Equals Engine Speed x 1.28) =53. I live in Florida and when time comes I'm gunn need it. I know poor me right now. But when June rolls around and its 110 with 100% humidity feel for me then!!!

    Code Displayed Value
    1 System malfunction - displayed as a Diagnostic Trouble Code (DTC), see chart below

    2 Digital value of Interior Temperature Sensor, in Headliner (G 86)
    3 Digital value of Interior Temperature Sensor, in Instrument Panel (G 56)
    4 Digital value of Fresh Air Intake Duct Temperature Sensor (G 89)
    5 Digital value of Outside Air (Ambient) Temperature Sensor (G 17), front
    6 Digital value of Outside Air (Ambient) Temperature Sensor
    7 Digital value of Ambient Temperature Sensor At Fresh Air Blower (G 109)
    8 Digital value of Temperature Regulator Flap Motor Potentiometer (G 92)
    9 Delta value of Temperature Regulator Flap
    10 Non-corrected specified value of Temperature Regulator Flap
    11 Digital value of Central Flap Motor Potentiometer (G 112)
    12 Specified value of Central Flap
    13 Digital value of Footwell/Defroster Flap Motor Potentiometer (G 114)
    14 Specified value of Footwell/Defroster Flap
    15 Digital value of Air Flow Flap Motor Potentiometer (G 113)
    16 Specified value of Air Flow Flap
    17 Vehicle Speed (km/h)
    18 Actual Air Blower voltage (Volts)
    19 Specified Fresh Air Blower voltage (Volts)
    20 A/C Compressor (A/C Clutch) voltage (Volts)
    21 Number of low voltage occurrences, non-transient
    22 Cycle condition of A/C Refrigerant High Pressure Switch (F 118)
    23 Cyclings of the A/C Refrigerant High Pressure Switch (F 118)
    24 Cyclings of the switches, absolute non-fluctuating
    25 Analog/Digital value, Kick-Down Switch
    26 Analog/Digital value, Engine Coolant Temperature (ECT) Warning Light
    27 Coding value
    28 Engine Speed (RPM)
    29 A/C Compressor speed in rpm (Equals Engine Speed x 1.28)
    30 Software version
    31 Display check (all segments of A/C Control Head display light up)
    32 Potentiometer malfunction counter, Temperature Regulator Flap
    33 Potentiometer malfunction counter, Central Flap
    34 Potentiometer malfunction counter, Footwell/Defroster Flap
    35 Potentiometer malfunction counter, Air Flow Map
    36 Feedback value, cold end-stop, Temperature Regulator Flap Motor Potentiometer (G 92)
    37 Feedback value, hot end-stop, Temperature Regulator Flap Motor Potentiometer (G 92), max. stop
    38 Feedback value, cold end-stop, Central Flap Motor Potentiometer (G 112)
    39 Feedback value, hot end-stop, Central Flap Motor Potentiometer (G 112)
    40 Feedback value, cold end-stop, Footwell/Defroster Flap Motor Potentiometer (G114)
    41 Feedback value, hot end-stop, Footwell/Defroster Flap Motor Potentiometer (G114)
    42 Feedback value, cold end-stop, Air Flow Map Motor Potentiometer (G 113)
    43 Feedback value, hot end-stop, Air Flow Map Motor Potentiometer (G 113)
    44 Vehicle operation cycle counter
    45 Calculated interior temperature (internal software, in digits)
    46 Outside (ambient) temperature, filtered, for regulation (internal software)
    47 Outside (ambient) temperature, unfiltered, (internal software, in deg C)
    48 Outside (ambient) temperature, unfiltered, (in digits)
    49 Malfunction counter for speedometer (vehicle speed) signal
    50 Standing time (in minutes)
    51 Engine Coolant Temperature (ECT) in deg C
    52 Graphics channel 1 - A/C compressor switch-off conditions are identified by illuminated segments of the “88.8” display. See chart below.

    53 Graphics channel 2 - Climate system electrical outputs are identified by illuminated segments of the “88.8” display. See chart below.

    54 Control characteristics
    55 Outside (ambient) temperature, in deg C or deg F depending on setting on A/C control head
    56 Temperature in deg C, from Interior Temperature Sensor, in Headliner (G 86)
    57 Temperature in deg C, from Interior Temperature Sensor, in Instrument Panel (G 56)
    58 Temperature in deg C, from Fresh Air Intake Duct Temperature Sensor (G 89)
    59 Temperature in deg C, from Outside Air (Ambient) Temperature Sensor (G 17), front
    60 Temperature in deg C, from Ambient Temperature Sensor At Fresh Air Blower (G 109)
    61 Software version (latest)....

  2. #2
    Established Member Two Rings
    Join Date
    May 29 2013
    AZ Member #
    116154
    Location
    Jacksonville Fl

    Also I have no idea what I'm doing or looking for.

  3. #3
    Veteran Member Four Rings GrapeBandit's Avatar
    Join Date
    Dec 13 2010
    AZ Member #
    68228
    Location
    FL

    almost positive that taking the head off has nothing to do with the ac not working.

    does the fan blow or that doesnt work either?
    r.i.p.CASABLANCA B5 1.8t
    r.i.p.BRILLIANT YELLOW B5 30V

    PCV? Just dump it on the ground!

  4. #4
    Established Member Two Rings
    Join Date
    May 29 2013
    AZ Member #
    116154
    Location
    Jacksonville Fl

    Yes it blows.i figured that but better safe to ask

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