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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 405 (HVAC Control System - General Information And Diagnostics - (Except Hybrid)) >> Diagnosis And Testing >> Climate Control System >> Pinpoint Tests >> Pinpoint Test E: Temperature Control is Inoperative >> Pinpoint Test E: Temperature Control Is Inoperative

Pinpoint Test E: Temperature Control Is Inoperative

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. E1 CHECK THE HEATER TEMPERATURE CABLE SYSTEM 
    • Key in ON position.
    • Allow the engine to reach a normal operating temperature.
    • Set the function selector switch to the MAX A/C position. Adjust the temperature control switch to full COOL (left) and check for cool air discharge.
    • Adjust the temperature control switch to full WARM (right) and check for warm air discharge.
    • Vary the temperature control switch from full WARM to full COOL.
    • Did the air temperature change? 

    Yes:  The system is fully functional.

    No:  GO to  E2.

  2. E2 CHECK FOR A DISCONNECTED TEMPERATURE BLEND DOOR ACTUATOR CONTROL 
    • Inspect the temperature blend door actuator control cable installation on the heater core housing. Verify that it is in mid-position, fully seated on the shaft and correctly located on the housing. Refer to CLIMATE CONTROL .
      Fig 1: Checking For Disconnected Temperature Blend Door Actuator Control
      G04621416Courtesy of FORD MOTOR CO.
    • Is the temperature blend door actuator control cable fully seated on the shaft, in the mid-position and correctly located on the housing? 

    Yes:  GO to  E3.

    No:  CONNECT the temperature blend door actuator control cable correctly. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.

  3. E3 CHECK THE TEMPERATURE BLEND DOOR ACTUATOR CONTROL CABLE OPERATION 
    • Rotate the temperature control switch from full WARM to full COOL while observing the heater temperature cable.
    • Is there corresponding movement from full warm to full cold between the temperature control switch and the heater temperature cable at the heater core housing? 

    Yes:  INSTALL a new heater core housing due to a damaged air temperature blend door. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.

    No:  GO to  E4.

  4. E4 CHECK THE TEMPERATURE CONTROL OPERATION 
    • Inspect the temperature blend door actuator control cable installation on the temperature control switch.
      Fig 2: Checking Temperature Control Operation
      G04621417Courtesy of FORD MOTOR CO.
    • Is the temperature blend door actuator control cable connected? 

    Yes:  GO to  E5.

    No:  CONNECT the temperature blend door actuator control cable. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.

  5. E5 CHECK THE TEMPERATURE CONTROL SWITCH 
    • Rotate the temperature control switch from full WARM to full COOL while observing the heater temperature cable.
    • Is there corresponding movement from full warm to full cold between the temperature control switch and the heater temperature cable at the temperature control switch? 

    Yes:  INSTALL a new heater temperature cable. REFER to CLIMATE CONTROL . TEST the system for normal operation.

    No:  INSTALL a new temperature control switch. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.

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