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PINPOINT TEST J: DTCs B126D:15 OR B1269:11

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NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. J1 CARRY OUT THE ON-DEMAND SELF TEST FOR THE CONVERTIBLE TOP AJAR SWITCH 
    NOTE: False DTCs will set if the convertible top is not in the full DOWN position before carrying out this test.
    • Enter the following diagnostic mode on the scan tool: Self-Test - Body Control Module B (BCM-B).
    • Ignition ON.
    • With the convertible top and the rear windows in the full DOWN position, carry out the on-demand self test for the BCM-B.
    • Does DTC B126D:15 or B1269:11 set as current? 
    1. Yes  : GO to J2.
    2. No  : The concern is not present at this time. RETURN the vehicle to the customer.
  2. J2 CHECK THE CONVERTIBLE TOP AJAR SWITCH OPERATION 
    • Ignition OFF.
    • Disconnect: Convertible Top Ajar Switch C3115.
    • Measure the resistance between convertible top ajar switch C3115-1, circuit CPR92 (BU/GY), component side and convertible top ajar switch C3115-3, circuit GD110 (BK/WH), component side, with convertible top in the full UP position; and between convertible top ajar switch C3115-2, circuit CPR93 (YE/GY), component side and convertible top ajar switch C3115-3, circuit GD110 (BK/WH), component side, with convertible top in the full DOWN position.
      Fig 1: Measuring Resistance Between Convertible Top Ajar Switch C3115-1, Circuit CPR92 (BU/GY)
      G06403966Courtesy of FORD MOTOR CO.
    • Are the resistances less than 20 ohms? 
    1. Yes  : GO to J3.
    2. No  : INSTALL a new convertible top ajar switch. REFER to CONVERTIBLE TOP . CLEAR the DTCs. REPEAT the self-test.
  3. J3 CHECK CIRCUIT GD110 (BK/WH) FOR AN OPEN 
    • Measure the resistance between convertible top ajar switch C3115-3, circuit GD110 (BK/WH), harness side and ground.
      Fig 2: Measuring Resistance Between Convertible Top Ajar Switch C3115-3, Circuit GD110 (BK/WH)
      G06403967Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to J4.
    2. No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  4. J4 CHECK CIRCUITS CPR93 (YE/GY) AND CPR92 (BU/GY) FOR A SHORT TO VOLTAGE 
    • Disconnect: BCM-B C4368B.
    • Ignition ON.
    • Measure the voltage between convertible top ajar switch C3115-2, circuit CPR93 (YE/GY), harness side and ground; and between convertible top ajar switch C3115-1, circuit CPR92 (BU/GY), harness side and ground.
      Fig 3: Measuring Voltage Between Convertible Top Ajar Switch C3115-2, Circuit CPR93 (YE/GY)
      G06403968Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
    2. No  : GO to J5.
  5. J5 CHECK CIRCUITS CPR93 (YE/GY) AND CPR92 (BU/GY) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance between convertible top ajar switch C3115-1, circuit CPR92 (BU/GY), harness side and ground; and between convertible top ajar switch C3115-2, circuit CPR93 (YE/GY), harness side and ground.
      Fig 4: Measuring Resistance Between Convertible Top Ajar Switch C3115-1, Circuit CPR92 (BU/GY) And Ground
      G06403969Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
    1. Yes  : GO to J6.
    2. No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  6. J6 CHECK CIRCUITS CPR93 (YE/GY) AND CPR92 (BU/GY) FOR AN OPEN 
    • Measure the resistance between BCM-B C4368B, harness side and convertible top ajar switch C3115, harness side using the following chart:
      BCM-B Circuit Convertible Top Ajar Switch
      C4368B-17 CPR93 (YE/GY) C3115-2
      C4368B-4 CPR92 (BU/GY) C3115-1
      Fig 5: Measuring Resistance Between BCM-B C4368B And Convertible Top Ajar Switch C3115
      G06403970Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    1. Yes  : GO to J7.
    2. No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  7. J7 CHECK FOR CORRECT BCM-B OPERATION 
    • Disconnect all the BCM-B connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect all the BCM-B connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new BCM-B. REFER to MULTIFUNCTION ELECTRONIC MODULES . 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. CLEAR the DTCs. REPEAT the self-test.
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