LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2015 >> Transit Connect XL, Van Passenger >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System - General Information >> Diagnosis And Testing >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) >> Pinpoint Tests >> Pinpoint Test K : The A/C (Air Conditioning) Is Always On - A/C (Air Conditioning) Mode Always Commanded On >> Pinpoint Test K : The A/C (Air Conditioning) Is Always On - A/C (Air Conditioning) Mode Always Commanded On
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test K : The A/C (Air Conditioning) Is Always On - A/C (Air Conditioning) Mode Always Commanded On

  1. K1 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.
    • Make sure the HVAC control module is powered off.
    • Using a diagnostic scan tool, clear the PCM Diagnostic Trouble Codes (DTCs).
    • Using a diagnostic scan tool, carry out the PCM KOEO self-test.

    Does DTC P1464 return? 

    Yes  GO to  K2
    No  IGNORE the DTC and CONTINUE diagnosing other Diagnostic Trouble Codes (DTCs) or symptoms. GO to the DTC Chart: PCM  or SYMPTOM CHART Climate Control Systems 

  2. K2 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY

    • Carry out the component test on the A/C clutch relay. Refer to COMPONENT TESTING for schematic and connector information.

    Did the relay pass the component test? 

    Yes  GO to  K3
    No  INSTALL a new A/C clutch relay.

  3. K3 CHECK THE A/C (AIR CONDITIONING) ON SWITCH CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Disconnect HVAC control module C2357A .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2357A-5
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  K4
    No  REPAIR the circuit.

  4. K4 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

    • Disconnect A/C compressor clutch field coil C100 or C1680 .
    • Disconnect the A/C clutch relay.
    • Ignition ON.
    • For 1.6L, measure:
      Positive Lead Measurement / Action Negative Lead
      C100-1
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
    • For 2.5L, measure:
      Positive Lead Measurement / Action Negative Lead
      C1680-1
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  K5

  5. K5 COMPARE THE EVAPORATOR TEMPERATURE SENSOR TO THE PCM (POWERTRAIN CONTROL MODULE) AMBIENT AIR TEMPERATURE (AAT) PARAMETER IDENTIFICATION (PID)

    • Allow the vehicle exterior and interior to stabilize to ambient temperature.
    • Disconnect Evaporator Temperature Sensor C296 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C296-1 (component side)
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C296-3 (component side)
    • Compare the evaporator temperature sensor measured resistance with the table below.
      Ambient Temperature °F (°C) Resistance
      -4.0°F (-20°C) 28.6 K ohms - 30.5 K ohms
      32.0°F (°C) 9.7 K ohms - 10.2 K ohms
      68.0°F (20°C) 3.7 K ohms - 3.9 K ohms
      77.0°F (25°C) 2.9 K ohms - 3.1 K ohms
      103.9°F (40°C) 1.5 K ohms - 1.7 K ohms
      139.9°F (60°C) 728 ohms - 787 ohms
    • Ignition ON.
    • Using a diagnostic scan tool, view the PCM Parameter Identification (PIDs).
    • Monitor the PCM Parameter Identification (PID) AAT.

    Is the resistance within the specified values for the temperatures? 

    Yes  GO to  K6
    No  INSTALL a new evaporator temperature sensor. REFER to: Evaporator Temperature Sensor 

  6. K6 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR (ACP_PRESS) PARAMETER IDENTIFICATION (PID)

    • Ignition ON.
    • Using a diagnostic scan tool, view the PCM Parameter Identification (PIDs).
    • With a manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM Parameter Identification (PID) ACP_PRESS.

    Are the pressure values of the manifold gauge set and the ACP_PRESS PCM PID within ± 103 kPa (15 psi)? 

    Yes  GO to  K7
    No  INSTALL a new A/C pressure transducer. REFER to: High-Pressure Cutoff Switch - 1.6L EcoBoost (132kW/180PS) - Sigma 

  7. K7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUEST SIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION) WITH THE A/C (AIR CONDITIONING) OFF

    • Using a diagnostic scan tool, monitor the PCM AC_REQ PID.
    • Using the HVAC controls, deactivate the A/C.

    Does the PID display OFF? 

    Yes  GO to  K9
    No  GO to  K8

  8. K8 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUEST SIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION) WITH THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE DISCONNECTED

    • Ignition OFF.
    • Disconnect HVAC control module C228A .
    • Ignition ON.
    • Using a diagnostic scan tool, monitor the PCM AC_REQ PID.

    Does the PID display OFF? 

    Yes  GO to  K9
    No  GO to  K10

  9. K9 CHECK FOR CORRECT HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION

    • Ignition OFF.
    • Disconnect and inspect all HVAC control module electrical connectors (if not previously disconnected).
    • Repair:
      • corrosion (install new connector or terminal - clean module pins)
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary
    • Connect all HVAC control module electrical connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new HVAC control module. REFER to: Climate Control Assembly 
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

  10. K10 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

    • Ignition OFF.
    • Disconnect and inspect all PCM electrical connectors (if not previously disconnected).
    • Repair:
      • corrosion (install new connector or terminal - clean module pins)
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary
    • Connect all PCM electrical connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. REFER to: POWERTRAIN CONTROL MODULE (PCM) 1.6L REFER to: POWERTRAIN CONTROL MODULE (PCM) 2.5L
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
scientia non olet · About LEMON Manuals