LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2316 (HVAC - Climate Control System - General Information And Diagnostics (Hybrid)) >> Diagnosis And Testing >> Climate Control System >> Pinpoint Tests >> Pinpoint Test J: The Air Conditioning (A/C) is Always On >> Pinpoint Test J: The Air Conditioning (A/C) Is Always On

Pinpoint Test J: The Air Conditioning (A/C) Is Always On

WARNING: This page is about a different car, the 2010 Mercury Milan and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Diagnose any PCM, HVAC module or ACCM  DTCs before carrying out the following pinpoint test.
  1. J1 CHECK THE A/C EVAPORATOR TEMPERATURE (EVAP_TEMP) HVAC PID 
    • Allow the vehicle exterior and interior to stabilize to an ambient temperature.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: EVAP_TEMP HVAC PID.
    • Does the EVAP_TEMP HVAC PID read similar to the ambient temperature? 
    • Yes:  For vehicles not equipped  with navigation, GO to  J2.

      For vehicles equipped  with navigation, GO to  J3.

    • No:  INSTALL a new A/C evaporator discharge temperature sensor. TEST the system for normal operation.
  2. J2 CHECK THE (A/C) SWITCH (CC_SW_AC) HVAC PID WITH THE A/C OFF 
    • Start the engine.
    • Enter the following diagnostic mode on the scan tool: CC_SW_AC HVAC PID.
    • Select PANEL and make sure the A/C indicator is OFF.
    • Does the CC_SW_AC HVAC PID read Inactive? 
  3. J3 CHECK THE (A/C) SWITCH (CC_SW_AC) FCIM PID WITH THE A/C OFF 
    NOTE: Before carrying out this test step, be sure all other FCIM  button functions are functioning correctly. If all other buttons operate correctly, continue with this test step. If multiple buttons are incorrectly functioning and DTC U0256:00 is not present, install a new FCIM  . Test the system for normal operation. If DTC U0256:00 is present, diagnose the DTC first.
    • Start the engine.
    • Enter the following diagnostic mode on the scan tool: CC_SW_AC FCIM  PID.
    • Select PANEL and make sure the A/C indicator is OFF.
    • Does the CC_SW_AC FCIM PID read Inactive? 
  4. J4 CHECK THE AIR CONDITIONING COMPRESSOR COMMANDED STATE (ACC_CMD) PCM PID WITH THE A/C OFF 
    • Enter the following diagnostic mode on the scan tool: ACC_CMD PCM PID.
    • Select PANEL and make sure the A/C indicator is OFF.
    • Does the ACC_CMD PCM PID read OFF? 
    • Yes:  INSTALL a new electric A/C compressor. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.
    • No:  INSTALL a new PCM. TEST the system for normal operation.
scientia non olet · About LEMON Manuals