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Home >> Audi >> 2014 >> A5 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 1122 (Climate Control System - General Information (2 Of 2)) >> Diagnosis And Testing >> Climate Control System >> Pinpoint Test(s) >> Pinpoint Test AE : B102E:11, B102E:15, B102E:92 >> Pinpoint Test AE : B102E:11, B102E:15, B102E:92

Pinpoint Test AE : B102E:11, B102E:15, B102E:92

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.

  1. AE1 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Disconnect FCIM .

    • Disconnect ambient air quality sensor C1744 .

    • Disconnect BJB fuse 15 (15A).

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1744-1
      GFD271410Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1744-3
      GFD271410Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  AE2

  2. AE2 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1744-1
      GFD271411Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1744-3
      GFD271411Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  AE3
    No  REPAIR the circuit in question.

  3. AE3 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1744-1
      GFD271411Courtesy of FORD MOTOR COMPANY
      		 BJB fuse 15 (15A) socket

      Positive Lead Measurement / Action Negative Lead
      C1744-2
      GFD271411Courtesy of FORD MOTOR COMPANY
      		 Ground

      Positive Lead Measurement / Action Negative Lead
      C1744-3
      GFD271411Courtesy of FORD MOTOR COMPANY
      		  

    Are the resistances less than 3 ohms? 

    Yes  GO to  AE4
    No  REPAIR the circuit in question.

  4. AE4 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR A SHORT TOGETHER

    Are the resistances greater than 10, 000 ohms? 

    Yes  INSTALL a new ambient air quality sensor. Refer to the appropriate GENERAL PROCEDURES . TEST the system for normal operation. If the concern is still present, GO to  AE5
    No  REPAIR the circuits.

  5. AE5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect all theFCIM 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 FCIM connectors. Make sure they seat and latch correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new FCIM. Refer to the appropriate Information and Entertainment Systems article for the procedure.
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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