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PINPOINT TEST M: The Air Conditioning (AC) Is Always On - AC Mode Always Commanded On

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. M1 CHECK THE A/C SWITCH STATUS (CC_SW_AC) PID WITH THE A/C OFF 
    • Ignition ON.
    • Using a scan tool, view FCIM PIDs  .
    • Monitor the FCIM PID  CC_SW_AC.
    • Select panel press and release the A/C button (indicator off) on the HVAC  controls.

    Does the PID read Active when pressed and Inactive when released? 

    1. Yes  : GO to M2  .
    2. No  : INSTALL a new FCIM  . For Premium, REFER to FRONT CONTROLS INTERFACE MODULE (FCIM) . For Premium Plus, REFER to FRONT CONTROLS INTERFACE MODULE (FCIM) . For Sony® Sound, REFER to FRONT CONTROLS INTERFACE MODULE (FCIM) .
  2. M2 CHECK THE A/C REQUEST SIGNAL (AC_REQ) PID WITH THE A/C OFF 
    • Using a scan tool, view PCM PIDs  .
    • Deactivate the A/C using the HVAC  controls.
    • Monitor the PCM PID  AC_REQ.

    Does the PID read OFF? 

    1. Yes  : GO to  M4.
    2. No  : GO to M3  .
  3. M3 CHECK FOR CORRECT HVAC MODULE OPERATION 
    • Ignition OFF.
    • Disconnect and inspect all HVAC  module connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the HVAC  module connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    1. Yes  : CHECK OASIS  for any applicable TSBs  . If a TSB  exists for this concern, DISCONTINUE this test and FOLLOW TSB  instructions. If no TSBs  address this concern, INSTALL a new HVAC  module. Refer to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE .
    2. 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.
  4. M4 CHECK FOR CORRECT PCM OPERATION 
    • Ignition OFF.
    • Disconnect and inspect all PCM  connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the PCM  connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    1. Yes  : CHECK OASIS  for any applicable TSBs  . If a TSB  exists for this concern, DISCONTINUE this test and FOLLOW TSB  instructions. If no TSBs  address this concern, INSTALL a new PCM  . REFER to POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI or REFER to POWERTRAIN CONTROL MODULE - 3.5L TI-VCT, 3.7L TI-VCT .
    2. 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.
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