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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1790 (Climate Control System - General Information & Diagnostics (Hybrid)) >> Diagnosis And Testing >> Climate Control System >> Pinpoint Tests >> Pinpoint Test G: The Air Inlet Door Is Inoperative >> Overview

Pinpoint Test G: The Air Inlet Door Is Inoperative: Overview

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. G1 CHECK THE HVAC MODULE FOR DTCs 
    • Ignition ON.
    • Check the HVAC module for DTCs.
    • Are DTCs present? 
    1. Yes  : For DTC B1083:07  , INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new door actuator. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. For DTC B1083:11  , GO to G2.

      For DTC B1083:12  , GO to  G3.

      For DTC B1083:13  , GO to  G4.

      For DTC B11F0:11  , GO to  G6.

      For DTC B11F0:15  , GO to  G8.

    2. No  : INSPECT for broken/binding linkage or door. REPAIR as necessary. If no condition is found, GO to  G13.
  2. G2 CHECK CIRCUITS CH207 (BU/GY) AND CH208 (GN/OG) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: HVAC Module - DATC C2356a.
    • Measure the resistance between ground and:
      • HVAC module - DATC C2356a-16, circuit CH208 (GN/OG), harness side.
      • HVAC module - DATC C2356a-15, circuit CH207 (BU/GY), harness side.
      Fig 1: Checking Circuits CH207 (BU/GY) And CH208 (GN/OG) For Short To Ground
      G06064554Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes  : GO to  G5.
    2. No  : REPAIR circuit CH207 (BU/GY) or CH208 (GN/OG) for a short to ground. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  3. G3 CHECK CIRCUITS CH207 (BU/GY) AND CH208 (GN/OG) FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: HVAC Module - DATC C2356a.
    • Ignition ON.
    • Measure the voltage between ground and:
      • HVAC module - DATC C2356a-16, circuit CH208 (GN/OG), harness side.
      • HVAC module - DATC C2356a-15, circuit CH207 (BU/GY), harness side.
      Fig 2: Checking Circuits CH207 (BU/GY) And CH208 (GN/OG) For Short To Voltage
      G06064555Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes  : REPAIR circuit CH207 (BU/GY) or CH208 (GN/OG) for a short to power. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
    2. No  : GO to  G5.
  4. G4 CHECK THE ACTUATOR MOTOR DRIVE CIRCUITS FOR AN OPEN 
    NOTE: Due to limited connector accessibility, before carrying out this test step, visually inspect the wiring between the HVAC module and actuator for opens or shorts. If no damage is visually evident, proceed with the test.
    • Ignition OFF.
    • Disconnect: HVAC Module - DATC C2356a.
    • Disconnect: Air Inlet Door Actuator C289.
    • Measure the resistance between HVAC module - DATC C2356a-15, circuit CH207 (BU/GY), harness side and air inlet mode door actuator C289-6, circuit CH207 (BU/GY), harness side.
      Fig 3: Measuring Resistance Between HVAC Module - DATC C2356a-15 And Air Inlet Mode Door Actuator C289-6, Circuit CH207 (BU/GY)
      G07787300Courtesy of FORD MOTOR CO.
    • Measure the resistance between HVAC module - DATC C2356a-16, circuit CH208 (GN/OG), harness side and air inlet mode door actuator C289-5, circuit CH208 (GN/OG), harness side.
      Fig 4: Measuring Resistance Between HVAC Module - DATC C2356a-15 And Air Inlet Mode Door Actuator C289-5, Circuit CH208 (GN/OG)
      G06262712Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    1. Yes  : GO to  G13.
    2. No  : REPAIR the circuit(s) for an open. TEST the system for normal operation.
  5. G5 CHECK CIRCUIT CH207 (BU/GY) FOR A SHORT TO CIRCUIT CH208 (GN/OG) 
    • Ignition OFF.
    • Disconnect: Air Inlet Door Actuator C289.
    • Measure the resistance between HVAC module - DATC C2356a-15, circuit CH207 (BU/GY), harness side and HVAC module - DATC C2356a-16, circuit CH208 (GN/OG), harness side.
      Fig 5: Checking Circuit CH207 (BU/GY) For Short To Circuit CH208 (GN/OG)
      G06075240Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes  : GO to  G13.
    2. No  : REPAIR circuit CH208 (GN/OG) for a short to circuit CH207 (BU/GY). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  6. G6 CHECK CIRCUIT VH438 (GN/VT) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: HVAC Module - DATC C2356a.
    • Measure the resistance between ground and HVAC module - DATC C2356a-3, circuit VH438 (GN/VT), harness side.
      Fig 6: Checking Circuit VH438 (GN/VT) For Short To Ground
      G06757021Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes  : GO to G7.
    2. No  : REPAIR circuit VH438 (GN/VT) for a short to ground. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  7. G7 CHECK CIRCUITS RH111 (GY/BU) AND VH438 (GN/VT) FOR A SHORT TOGETHER 
    NOTE: Due to limited connector accessibility, before carrying out this test step, visually inspect the wiring between the HVAC module and actuator for opens or shorts. If no damage is visually evident, proceed with the test.
    • Disconnect: Air Inlet Door Actuator C289.
    • Measure the resistance between HVAC module - DATC C2356a-10, circuit RH111 (GY/BU), harness side and HVAC module C2356a-3, circuit VH438 (GN/VT), harness side.
      Fig 7: Checking Circuits RH111 (GY/BU) And VH438 (GN/VT) For Short Together
      G06262715Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes  : GO to  G13.
    2. No  : REPAIR circuits VH438 (GN/VT) and RH111 (GY/BU) for a short together. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  8. G8 CHECK CIRCUIT VH438 (GN/VT) FOR A SHORT TO POWER 
    • Ignition OFF.
    • Disconnect: HVAC Module - DATC C2356a.
    • Ignition ON.
    • Measure the voltage between ground and HVAC module - DATC C2356a-3, circuit VH438 (GN/VT), harness side.
      Fig 8: Measuring Voltage Between Ground And HVAC Module - DATC C2356a-3, Circuit VH438 (GN/VT)
      G06262716Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes  : REPAIR circuit VH438 (GN/VT) for a short to power. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
    2. No  : GO to G9.
  9. G9 CHECK CIRCUITS LH111 (BN/WH) AND VH438 (GN/VT) FOR A SHORT TOGETHER 
    NOTE: Due to limited connector accessibility, before carrying out this test step, visually inspect the wiring between the HVAC module and actuator for opens or shorts. If no damage is visually evident, proceed with the test.
    • Disconnect: Air Inlet Door Actuator C289.
    • Measure the resistance between HVAC module - DATC C2356a-11, circuit LH111 (BN/WH), harness side and HVAC module - DATC C2356a-3, circuit VH438 (GN/VT), harness side.
      Fig 9: Checking Circuits LH111 (BN/WH) And VH438 (GN/VT) For Short Together
      G06262717Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes  : GO to G10.
    2. No  : REPAIR circuits VH438 (GN/VT) and LH111 (BN/WH) for a short together. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  10. G10 CHECK CIRCUIT VH438 (GN/VT) FOR AN OPEN 
    • Measure the resistance between HVAC module - DATC C2356a-3, circuit VH438 (GN/VT), harness side and air inlet door actuator C289-9, circuit VH438 (GN/VT), harness side.
      Fig 10: Checking Circuit VH438 (GN/VT) For Open
      G07787307Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to G11.
    2. No  : REPAIR circuit VH438 (GN/VT) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  11. G11 CHECK CIRCUIT LH111 (BN/WH) FOR AN OPEN 
    • Measure the resistance between HVAC module - DATC C2356a-11, circuit LH111 (BN/WH), harness side and air inlet door actuator C289-10, circuit LH111 (BN/WH), harness side.
      Fig 11: Checking Circuit LH111 (BN/WH) For Open
      G06262719Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to G12.
    2. No  : REPAIR circuit LH111 (BN/WH) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  12. G12 CHECK THE ACTUATOR RETURN CIRCUIT RH111 (GY/BU) FOR AN OPEN 
    • Measure the resistance between HVAC module - DATC C2356a-10, circuit RH111 (GY/BU), harness side and air inlet door actuator C289-8, circuit RH111 (GY/BU), harness side.
      Fig 12: Checking Actuator Return Circuit RH111 (GY/BU) For Open
      G06262574Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to G13.
    2. No  : REPAIR circuit RH111 (GY/BU) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  13. G13 CHECK THE ACTUATOR CONNECTION 
    • Inspect the connector for:
      • corrosion.
      • pushed-out terminals.
      • damaged terminals.
    • Connect and correctly seat the actuator connector.
    • Clear the DTCs.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : CARRY OUT the AIR INLET MODE DOOR ACTUATOR  component test in this service information. If the actuator tests OK, GO to G14.
    2. No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. TEST the system for normal operation.
  14. G14 MODULE ACTUATOR POSITION CALIBRATION 
    NOTE: The purpose of the module actuator position calibration is to allow the HVAC module to reinitialize and calibrate the actuator stop points. To carry out the calibration, follow the steps below.
    • Ignition OFF.
    • Inspect the module connectors for:
      • corrosion.
      • pushed-out terminals.
      • damaged terminals.
    • Connect and correctly seat all the HVAC module connectors.
    • Ignition ON.
    • Clear the DTCs.
    • Select any position except OFF
      • NOTE: The HVAC module will now initialize and calibrate the actuators. Calibration of the actuators will take approximately 30 seconds.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new HVAC module. REFER to CLIMATE CONTROL -- FUSION, MILAN & MKZ article. TEST the system for normal operation.
    2. No  : The system is now operating correctly at this time. The concern may have been caused by a foreign object in the HVAC case or temporary binding that restricted actuator door travel. CHECK any actuator external linkage. If condition recurs, INSPECT actuator linkage and door for binding and CHECK HVAC case for foreign objects.
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