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PINPOINT TEST O : The Stoplamps Are On Continuously

  1. O1 CHECK THE STOPLAMP SWITCH

    • Ignition OFF.
    • Disconnect: Stoplamp Switch.
    • Ignition ON.
    • Observe the stoplamps.

    Do the stoplamps continue to illuminate? 

    Yes  If equipped with a TBC module, GO to  O2. If not equipped with a TBC module, GO to  O3.
    No  INSTALL a new stoplamp switch. Refer to Stoplamp Switch .

  2. O2 CHECK THE TBC MODULE

    • Ignition OFF.
    • Disconnect: TBC Module.
    • Ignition ON.

    Do the stoplamps continue to illuminate? 

    Yes  GO to  O3.
    No  INSTALL a new TBC module.

  3. O3 CHECK THE PCM

    • Ignition OFF.
    • Disconnect: PCM C175B.
    • Ignition ON.

    Do the stoplamps continue to illuminate? 

    Yes  If equipped With Intelligent Access, GO to  O4. If not equipped With Intelligent Access, GO to  O5.
    No  GO to  O8.

  4. O4 CHECK THE RFA MODULE

    • Ignition OFF.
    • Disconnect: RFA Module C2153C.
    • Ignition ON.

    Do the stoplamps continue to illuminate? 

    Yes  GO to  O5.
    No  GO to  O9.

  5. O5 CHECK THE BCM STOPLAMP SWITCH INPUT CIRCUIT FOR VOLTAGE

    • Ignition OFF.
    • Disconnect: BCM C2280B.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-28
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  O6.

  6. O6 CHECK THE BCM STOPLAMP SWITCH INPUT CIRCUIT FOR A SHORT TO VOLTAGE

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-4
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  O7.

  7. O7 CHECK THE BCM STOPLAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect: BCM C2280D.
    • Ignition ON.

    Do the stoplamps continue to illuminate? 

    Yes  REPAIR the circuit.
    No  GO to  O10.

  8. O8 CHECK FOR CORRECT PCM OPERATION

    • Disconnect and inspect all 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 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 Electronic Engine Controls - 2.0L GTDI or REFER to Electronic Engine Controls - 3.5L Ti-VCT, 3.7L Ti-VCT .
    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.

  9. O9 CHECK FOR CORRECT RFA MODULE OPERATION

    • Disconnect and inspect all RFA module 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 RFA module 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new RFA module. REFER to Multifunction Electronic Modules .
    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.

  10. O10 CHECK FOR CORRECT BCM OPERATION

    • Disconnect and inspect all BCM 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 BCM 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to Multifunction Electronic Modules - Without Intelligent Access or REFER to Multifunction Electronic Modules - With Intelligent Access .
    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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