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Pinpoint Test V: The Wrench Indicator Is Never/Always On

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
  1. V1 CARRY OUT THE INSTRUMENT CLUSTER INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL 
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command
    • Enter the instrument cluster control mode and select ETC_IND. Command the wrench indicator on and off. Observe the indicator.
    • Does the wrench indicator illuminate when commanded on, and turn off when commanded off? 
    1. YES  : Go to  V2.
    2. NO  : Go to  V9.
  2. V2 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM AND TCM SELF-TESTS 
    • Check for recorded PCM and TCM DTCs from the continuous and on-demand self-tests.
    • Are any PCM or TCM DTCs recorded? 
    1. YES  : For TCM DTCs, REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 6F50 .

      For PCM DTCs, REFER to the Introduction - Gasoline Engines .

    2. NO  : If equipped with AWD, go to  V3.

      If not equipped with AWD, go to  V4.

  3. V3 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND 4WD CONTROL MODULE SELF-TESTS 
    • Check for recorded 4WD control module DTCs from the continuous and on-demand self-tests.
    • Are any 4WD control module DTCs recorded? 
    1. YES  : REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS .
    2. NO  : Go to  V4.
  4. V4 CHECK THE INSTRUMENT CLUSTER TCM WRENCH REQUEST 
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster PID
    • Select and monitor the instrument cluster TCM wrench request PID, WR_LMP_TCM.
    • Does the TCM wrench request PID read YES? 
    1. YES  : Go to  V7.
    2. NO  : Go to  V5.
  5. V5 CHECK THE INSTRUMENT CLUSTER ELECTRONIC THROTTLE CONTROL WRENCH REQUEST PID 
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster PID
    • Select and monitor the instrument cluster electronic throttle control wrench request PID, WR_LMP_ETC.
    • Does the electronic throttle control wrench request PID read YES? 
    1. YES  : Go to  V7.
    2. NO  : If equipped with AWD, go to  V6.

      If not equipped with AWD, go to  V9.

  6. V6 CHECK THE INSTRUMENT CLUSTER 4WD CONTROL MODULE WRENCH REQUEST PID 
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster PID
    • Select and monitor the instrument cluster 4WD control module wrench request PID, WR_LMP_4X4M.
    • Does the 4WD control module control wrench request PID read YES? 
    1. YES  : Go to  V8.
    2. NO  : Go to  V9.
  7. V7 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the PCM connectors and make sure they seat correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
  8. V8 CHECK FOR CORRECT 4WD CONTROL MODULE OPERATION 
    • Disconnect all the 4WD control module connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the 4WD control module connectors and make sure they seat correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new 4WD control module. REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS . TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
  9. V9 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect the instrument cluster connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the instrument cluster connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new instrument cluster. REFER to Instrument Cluster (IC) . TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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