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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 303 (Sunroof - Roof Opening Panel) >> Diagnosis And Testing >> Roof Opening Panel >> Pinpoint Tests >> Pinpoint Test E: The Roof Opening Panel Does Not Open or Close >> Pinpoint Test E: The Roof Opening Panel Does Not Open Or Close

Pinpoint Test E: The Roof Opening Panel Does Not Open Or Close

WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK THE POWER WINDOWS 
    • Ignition ON.
    • Verify the power windows operate.
    • Do the power windows operate? 
  2. E2 CHECK THE MOTOR/MODULE FOR INITIALIZATION 
    • Attempt to carry out the Roof Opening Panel Motor Initialization procedure. Refer to ROOF OPENING PANEL MOTOR INITIALIZATION .
    • Is the concern still present, or does the roof opening panel motor fail to initialize? 
    • Yes  : GO to E3.
    • No  : The system is operating normally at this time. The roof opening panel motor was not initialized.
  3. E3 CHECK THE OVERHEAD CONSOLE SWITCH 
    • Ignition OFF.
    • Disconnect: Overhead Console Switch C912.
    • Carry out the overhead console switch component test. Refer to OEM WIRING DIAGRAMS COMPONENT TESTING for component testing.
    • Is the overhead console switch OK? 
  4. E4 CHECK VOLTAGE TO THE ROOF OPENING PANEL MOTOR/MODULE 
    • Disconnect: Roof Opening Panel Motor/Module C921.
    • Ignition ON.
    • Measure the voltage between roof opening panel motor/module C921-3, circuit CBP32 (GN/VT), harness side and roof opening panel motor/module C921-6, circuit SBB48 (VT/RD), harness side and ground.
      Fig 1: Measuring Voltage Between Roof Opening Panel Motor/Module C921-3, Circuit CBP32 (GN/VT) And C921-6, Circuit SBB48 (VT/RD), Harness Side And Ground
      G06071259Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts for both measurements? 
    • Yes  : GO to E5.
    • No  : VERIFY Battery Junction Box (BJB) fuse 48 (20A) and BCM fuse 32 (15A) are OK. If OK, REPAIR circuit SBB48 (VT/RD) and/or CBP32 (GN/VT) for an open.

      If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short. TEST the system for normal operation.

  5. E5 CHECK THE ROOF OPENING PANEL MOTOR/MODULE GROUND 
    • Ignition OFF.
    • Measure the resistance between roof opening panel motor/module C921-1, circuit GD139 (BK/YE), harness side and ground.
      Fig 2: Measuring Resistance Between Roof Opening Panel Motor/Module C921-1, Circuit GD139 (BK/YE) And Ground
      G06071260Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to E6.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  6. E6 CHECK THE OVERHEAD CONSOLE SWITCH GROUND 
    • Measure the resistance between overhead console switch C912-12, circuit CPR39 (VT/WH), harness side and ground.
      Fig 3: Measuring Resistance Between Overhead Console Switch C912-12, Circuit CPR39 (VT/WH) And Ground
      G06135529Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to  E8.
    • No  : GO to E7.
  7. E7 CHECK THE COMMON CIRCUIT FOR AN OPEN 
    • Measure the resistance between overhead console switch C912-12, circuit CPR39 (VT/WH), harness side and roof opening panel motor/module C921-2, circuit CPR39 (VT/WH), harness side.
      Fig 4: Measuring Resistance Between Overhead Console Switch C912-12, Circuit CPR39 (VT/WH) And Roof Opening Panel Motor/Module C921-2, Circuit CPR39 (VT/WH)
      G06459043Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : INSTALL a new roof opening panel motor/module. REFER to ROOF OPENING PANEL MOTOR . TEST the system for normal operation.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  8. E8 CHECK THE ROOF OPENING PANEL CONTROL CIRCUIT FOR AN OPEN 
    • Measure the resistance between overhead console switch C912-8, circuit CPR40 (YE/OG), harness side and roof opening panel motor/module C921-10, circuit CPR40 (YE/OG), harness side.
      Fig 5: Measuring Resistance Between Overhead Console Switch C912-8, Circuit CPR40 (YE/OG) And Roof Opening Panel Motor/Module C921-10, Circuit CPR40 (YE/OG)
      G06071262Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to E9.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  9. E9 CHECK THE ROOF OPENING PANEL CONTROL CIRCUIT FOR AN OPEN 
    • Measure the resistance between overhead console switch C912-6, circuit CPR31 (VT/BN), harness side and roof opening panel motor/module C921-5, circuit CPR31 (VT/BN), harness side.
      Fig 6: Measuring Resistance Between Overhead Console Switch C912-6, Circuit CPR31 (VT/BN) And Roof Opening Panel Motor/Module C921-5, Circuit CPR31 (VT/BN)
      G06071263Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to E10.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  10. E10 CHECK THE ROOF OPENING PANEL CONTROL CIRCUITS FOR A SHORT TO GROUND 
    • Measure the resistance between overhead console switch C912, harness side and ground using the following chart:
      Overhead Console Switch Circuit
      C912-6 CPR31 (VT/BN)
      C912-3 CPR38 (WH/BU)
      C912-8 CPR40 (YE/OG)
      Fig 7: Measuring Resistance Between Overhead Console Switch C912 And Ground
      G06173908Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10, 000 ohms for all measurements? 
    • Yes  : GO to E11.
    • No  : REPAIR the circuit(s). TEST the system for normal operation.
  11. E11 CHECK THE ROOF OPENING PANEL MOTOR/MODULE FOR CORRECT OPERATION 
    • Disconnect all roof opening panel motor/module connectors.
    • Check for:
      • corrosion.
      • bent pins.
      • pushed-out pins.
    • Connect all roof opening panel motor/module connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new roof opening panel motor/module. REFER to ROOF OPENING PANEL MOTOR . TEST the system for normal operation.
    • No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
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