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Pinpoint Test H: The One-Touch Up/Down Feature Is Inoperative - LH Or RH Front, MKX

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. H1 CHECK FOR POWER (B+) LOSS DURING LH OR RH FRONT WINDOW OPERATION 
    • Verify if power (B+) was lost during LH or RH front window operation.
    • Was power (B+) lost while LH or RH front window was in operation? 
    1. YES  : RAISE the LH or RH front window to the fully closed position. VERIFY the window glass stalls into the upper header seal. The front window should function normally. TEST the system for normal operation.
    2. NO  : Go to  H2.
  2. H2 DE-INITIALIZE, THEN INITIALIZE THE FRONT MOTOR 
    • De-initialize the front window motor, then carry out the front window motor initialization procedure. Refer to Window Motor Initialization .
    • Is the one-touch down feature operating correctly? 
    1. YES  : The system is operating normally at this time. The front window motor lost initialization.
    2. NO  : For LH window, go to  H3.
    3. For RH window, go to  H5.
  3. H3 CHECK THE LH FRONT WINDOW CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: LH Front Window Control Switch C535A and C535B
    • Carry out the LH Front Window Switch Component Test. Refer to COMPONENT TESTING.
    • Did the LH front window switch pass the component test? 
    1. YES  : Go to  H4.
    2. NO  : INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.
  4. H4 CHECK CIRCUIT CPW29 (VT/GY) FOR AN OPEN 
    • Disconnect: LH Front Window Motor C540
      • Fig 1: Measuring Voltage Between LH Front Window Motor C540-2, Circuit CPW29 (VT/GY) & Ground
      GF0030911Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch C535A-8, circuit CPW29 (VT/GY), harness side and LH front window motor connector C540-2, circuit CPW29 (VT/GY).
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new LH front window motor. REFER to Window Regulator Motor . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.
  5. H5 CHECK THE LH and RH FRONT WINDOW CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: LH Front Window Control Switch C535A, C535B and RH Front Window Control Switch C648
    • Carry out the LH and RH front window switch component tests. Refer to COMPONENT TESTING.
    • Did the LH and RH front window switches pass the component tests? 
    1. YES  : Go to  H6.
    2. NO  : INSTALL a new front window control switch. REFER to Window Control Switch . TEST the system for normal operation.
  6. H6 CHECK CIRCUIT CPW31 (GN/WH) FOR AN OPEN 
    • Disconnect: RH Front Window Motor C646
      • Fig 2: Measuring Resistance Between LH Front Window Control Switch C535A-1, Circuit CPW31 (GN/WH)
      GF0030933Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch C535A-1, circuit CPW31 (GN/WH), harness side and RH front window motor connector C646-2, circuit CPW31 (GN/WH); and between RH front window control switch C648-4, circuit CPW31 (GN/WH), harness side and RH front window motor connector C646-2, circuit CPW31 (GN/WH).
    • Are the resistances less than 5 ohms for both measurements? 
    1. YES  : INSTALL a new RH front window motor. REFER to Window Regulator Motor . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the RH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.
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