LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2021 >> Expedition Platinum, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 494 (Cruise Control) >> Diagnosis And Testing >> Cruise Control >> Pinpoint Tests >> Pinpoint Test B : P0504, P0572, P0573 Or P1703 >> Pinpoint Test B : P0504, P0572, P0573 Or P1703

Pinpoint Test B : P0504, P0572, P0573 Or P1703

WARNING: This page is about a different car, the 2020 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) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  1. B1 CHECK THE OPERATION OF THE STOPLAMPS

    • Operate the stoplamps.

    Do the stoplamps and high mounted stoplamp operate correctly? 

    Yes  GO to  B2
    No  REFER to: Stoplamps .

  2. B2 CHECK THE STOPLAMP SWITCH (BOO1) AND (BOO2) PARAMETER IDENTIFICATIONS (PIDS)

    • Ignition ON.

    • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

    • Using the table, monitor the Parameter Identifications (PIDs) BOO1 (stoplamp switch) and BOO2 (cruise control deactivator switch) while applying and releasing the brake pedal.
      Brake Pedal Position BOO1 PID BOO2 PID
      Released Off Off
      Applied lightly On Off
      Applied firmly On On

    Do the PID values agree with the brake pedal position? 

    Yes  GO to  B8
    No  For an incorrect BOO1 PID value, GO to  B3 For an incorrect BOO2 PID value, GO to  B4

  3. B3 CHECK THE STOPLAMP SWITCH CIRCUIT

    • Ignition OFF.

    • Disconnect PCM.

    • While applying and releasing the brake pedal, measure:

      2.7L GTDI 

      Positive Lead Measurement / Action Negative Lead
      C1232B-8
      GFD465489Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.3L TIVCT 

      Positive Lead Measurement / Action Negative Lead
      C1551B-8
      GFD465489Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.5L GTDI Base 

      Positive Lead Measurement / Action Negative Lead
      C175B-8
      GFD465489Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.5L GTDI High Output 

      Positive Lead Measurement / Action Negative Lead
      C1915B-48
      GFD465489Courtesy of FORD MOTOR COMPANY
      		 Ground

      5.0L TiVCT 

      Positive Lead Measurement / Action Negative Lead
      C1381B-8
      GFD465489Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.0L Diesel 

      Positive Lead Measurement / Action Negative Lead
      C1233B-13
      GFD465489Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts with the brake pedal applied and 0 volts with the brake pedal released? 

    Yes  GO to  B8
    No  REPAIR the circuit.

  4. B4 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH FOR CORRECT OPERATION

    • Ignition OFF.

    • Disconnect PCM.

    • While firmly applying and releasing the brake pedal, measure:

      2.7L GTDI 

      Positive Lead Measurement / Action Negative Lead
      C1232B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.35L TIVCT 

      Positive Lead Measurement / Action Negative Lead
      C1551-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.5L GTDI Base 

      Positive Lead Measurement / Action Negative Lead
      C175B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.5L GTDI High Output 

      Positive Lead Measurement / Action Negative Lead
      C1915B-28
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      5.0L TiVCT 

      Positive Lead Measurement / Action Negative Lead
      C1381B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.0L Diesel 

      Positive Lead Measurement / Action Negative Lead
      C1233B-46
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms with the brake pedal released, and greater than 10, 000 ohms with the brake pedal firmly applied? 

    Yes  GO to  B8
    No  GO to  B5

  5. B5 CHECK THE CRUISE CONTROL GROUND CIRCUIT FOR AN OPEN

    • Disconnect BPP Switch C278.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C278-3
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  B6
    No  REPAIR the circuit.

  6. B6 CHECK THE CRUISE CONTROL SIGNAL CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C278-2
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B7
    No  REPAIR the circuit.

  7. B7 CHECK THE CRUISE CONTROL SIGNAL CIRCUIT FOR AN OPEN

    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C278-2
      GFD465705Courtesy of FORD MOTOR COMPANY
      		 C278-3

    • Measure:

      2.7L GTDI 

      Positive Lead Measurement / Action Negative Lead
      C1232B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.3L TIVCT 

      Positive Lead Measurement / Action Negative Lead
      C1551B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.5L GTDI Base 

      Positive Lead Measurement / Action Negative Lead
      C175B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.5L GTDI High Output 

      Positive Lead Measurement / Action Negative Lead
      C1915B-28
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      5.0L TIVCT 

      Positive Lead Measurement / Action Negative Lead
      C1381B-23
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

      3.0L Diesel 

      Positive Lead Measurement / Action Negative Lead
      C1233B-46
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new BPP switch. REFER to: Stoplamp Switch .
    No  REPAIR the signal circuit for an open.

  8. B8 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the PCM 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 PCM 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, Refer to PCM Guided Routine Testing .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
scientia non olet · About LEMON Manuals