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Pinpoint Test J: The STOPLAMPS Are On Continuously

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. J1 CHECK THE BRAKE PEDAL POSITION (BPP) SWITCH 
    • Disconnect: BPP Switch C278.
    • Are the stoplamps illuminated? 
  2. J2 CHECK CIRCUIT 511 (LG) FOR A SHORT TO POWER 
    • Disconnect: Multifunction Switch C202a.
    • Does the high mounted stoplamp continue to illuminate? 
    • Yes  : REPAIR circuit 511 (LG). TEST the system for normal operation.
    • No  : GO to J3.
  3. J3 CHECK THE MULTIFUNCTION SWITCH 
    • Connect: Multifunction Switch C202a.
    • Disconnect: Multifunction Switch C202b.
    • Do the rear stoplamps continue to illuminate? 
    • Yes  : GO to J4.
    • No  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
  4. J4 CHECK THE CIRCUIT 5 (OG/LB) AND CIRCUIT 9 (LG/OG) FOR A SHORT TO POWER 
    • Disconnect: Central Junction Box (CJB) C270b.
    • Do the rear stoplamps continue to illuminate? 
    • Yes  : GO to J5.
    • No  : REPAIR circuit 5 (OG/LB) or circuit 9 (LG/OG) as necessary. TEST the system for normal operation.
  5. J5 CHECK THE CJB 
    • Disconnect: CJB C270j.
    • Do the rear stoplamps continue to illuminate? 
    • Yes  : REPAIR circuit 5 (OG/LB) or circuit 9 (LG/OG) as necessary. TEST the system for normal operation.
    • No  : INSTALL a new CJB. TEST the system for normal operation.
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