Pinpoint Test H: Unable To Duplicate The Customer Concern And No DTCS Present

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before carrying out the following test, diagnose any HVAC or PCM DTCs.

H1 CHECK THE BLOWER MOTOR OPERATION
- Ignition ON.
- Select PANEL mode.
- Observe blower motor operation and select each blower motor speed.
- Does the blower motor operate in all selections and change speed in each?
- Yes : GO to H2.
- No : If the blower motor does not operate in any setting, GO to PINPOINT TEST P .
  If the blower motor does not properly change speeds or will not shut off, GO to PINPOINT TEST Q .
H2 CHECK AIRFLOW OPERATION
- Select the highest blower motor setting.
- NOTE: Refer to DESCRIPTION AND OPERATION for proper airflow descriptions.
  
  While observing the airflow, select each of the airflow positions (PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST, DEFROST).
- Is the airflow directed to the proper outlets?
- Yes : GO to H3.
- No : GO to PINPOINT TEST J .
H3 VERIFY TEMPERATURE CONTROL OPERATION
- Start the vehicle and allow it to reach normal operating temperature.
- With the A/C off, select PANEL mode.
- Change the temperature setting from the coldest to the warmest and back to the coldest.
- Does the temperature change between very warm to cool?
- Yes : GO to H4.
- No : If the temperature does not get very warm, GO to PINPOINT TEST K .
  For EMTC, if the temperature does not change at all, GO to PINPOINT TEST O .
  
  For DATC, if the driver side temperature does not change at all, GO to PINPOINT TEST T .
  
  For DATC, if the passenger side temperature does not change at all, GO to PINPOINT TEST U .
H4 VERIFY THE A/C CLUTCH DOES NOT ENGAGE WITH A/C OFF
- With the engine running and the A/C off, select PANEL mode.
- Select the coldest temperature setting.
- Is the outlet temperature close to ambient temperature?
- Yes : GO to H5.
- No : For EMTC, if the temperature is warmer than ambient temperature, GO to PINPOINT TEST O and diagnose for inoperative blend door.
  For DATC, if the driver side temperature is warmer than ambient temperature, GO to PINPOINT TEST T and diagnose for inoperative blend door.
  
  For DATC, if the passenger side temperature is warmer than ambient temperature, GO to PINPOINT TEST U and diagnose for inoperative blend door.
  
  If the outlet temperature is significantly colder than ambient temperature and the A/C compressor clutch cycles normally, GO to PINPOINT TEST N .
  
  If the outlet temperature is significantly colder than ambient temperature and the A/C compressor clutch is engaged and does not cycle, GO to PINPOINT TEST M .
H5 VERIFY A/C CLUTCH ENGAGEMENT IN THE A/C MODE
- Make sure the ambient air temperature is above 2°C (36°F).
- With the engine running, select PANEL mode.
- Press the A/C button (indicator on).
- Does the A/C clutch engage when the PANEL and A/C button (indicator on) is pressed?
- Yes : GO to H6.
- No : GO to PINPOINT TEST L .
H6 CHECK THE RECIRC OPERATION
- With the engine running, press the RECIRC button (indicator off).
- Select PANEL mode.
- Select the highest blower motor setting.
- Observe airflow noise.
- Press the RECIRC button (indicator on).
- Does the airflow noise increase when the RECIRC mode is selected (indicator on)?
- Yes : The system is operating normally.
- No : GO to PINPOINT TEST I .