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Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 276 (Cruise Control System - Adaptive) >> 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 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK THE OPERATION OF THE STOPLAMPS 
    • Ignition ON.
    • Operate the stoplamps.

    Do the stoplamps and high mounted stoplamp operate correctly? 

    1. Yes  : GO to B2  .
    2. No  : REFER to EXTERIOR LIGHTING , Symptom Chart: Stoplamps.
  2. B2 CHECK THE STOPLAMP SWITCH (BOO1) AND CRUISE CONTROL DEACTIVATOR SWITCH (BOO2) PIDs 
    • Using a scan tool, view Powertrain - Cruise Control PIDs  .
    • Monitor the powertrain 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? 

    1. Yes  : GO to  B8.
    2. 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  C175B (3.5L TiVCT, 3.7L TiVCT).
    • Disconnect: PCM  C1551B (3.5L GTDI)
    • Disconnect: PCM  C1381B (2.0L GTDI).
    • Ignition ON.
    • For 3.5L TiVCT or 3.7L TiVCT, while applying the brake pedal, measure:
      Positive Lead Measurement/Action Negative Lead
      C175B-13  VOLTAGE Ground
    • For 3.5L GTDI, while applying the brake pedal, measure:
      Positive Lead Measurement/Action Negative Lead
      C1551B-65  VOLTAGE Ground
    • For 2.0L GTDI, while applying the brake pedal, measure:
      Positive Lead Measurement/Action Negative Lead
      C1381B-30  VOLTAGE Ground

    Is the voltage greater than 11 volts? 

    1. Yes  : GO to  B8.
    2. No  : REPAIR the circuit.
  4. B4 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH FOR CORRECT OPERATION 
    • Ignition OFF.
    • Disconnect: PCM  C175B (3.5L TiVCT, 3.7L TiVCT).
    • Disconnect: PCM  C1551B (3.5L GTDI).
    • Disconnect: PCM  C1381B (2.0L GTDI).
    • For 3.5L TiVCT or 3.7L TiVCT, while firmly applying and releasing the brake pedal, measure:
      Positive Lead Measurement/Action Negative Lead
      C175B-46  OHM Ground
    • For 3.5L GTDI, while firmly applying and releasing the brake pedal, measure:
      Positive Lead Measurement/Action Negative Lead
      C1551B-65  OHM Ground
    • For 2.0L GTDI, while firmly applying and releasing the brake pedal, measure:
      Positive Lead Measurement/Action Negative Lead
      C1381B-16  OHM 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? 

    1. Yes  : GO to  B8.
    2. No  : GO to B5  .
  5. B5 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH GROUND CIRCUIT FOR AN OPEN 
    • Disconnect: Stoplamp Switch.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C278-3  OHM Ground

    Is the resistance less than 3 ohms? 

    1. Yes  : GO to B6  .
    2. No  : REPAIR the circuit.
  6. B6 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C278-2  OHM Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes  : GO to B7  .
    2. No  : REPAIR the circuit.
  7. B7 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH SIGNAL CIRCUIT FOR AN OPEN 
    • Connect a fused jumper wire:
      Positive Lead Measurement/Action Negative Lead
      C278-3  FUSED JUMPER WIRE C278-2 
    • For 3.5L TiVCT or 3.7L TiVCT, measure:
      Positive Lead Measurement/Action Negative Lead
      C175B-46  OHM Ground
    • For 3.5L GTDI, measure:
      Positive Lead Measurement/Action Negative Lead
      C1551B-65  OHM Ground
    • For 2.0L GTDI, measure:
      Positive Lead Measurement/Action Negative Lead
      C1381B-16  OHM Ground

    Is the resistance less than 3 ohms? 

    1. Yes  : INSTALL a new stoplamp switch. REFER to STOPLAMP SWITCH .
    2. No  : REPAIR the circuit.
  8. B8 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect and inspect all the PCM  connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged 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? 

    1. Yes  : CHECK OASIS  for any applicable TSBs  . If a TSB  exists for this concern, DISCONTINUE this test and FOLLOW TSB  instructions. If no TSBs  address this concern, INSTALL a new PCM  . REFER to POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI , REFER to POWERTRAIN CONTROL MODULE - 3.5L TI-VCT, 3.7L TI-VCT or REFER to ELECTRONIC ENGINE CONTROLS .
    2. 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.
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