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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2050 (Engine Controls - Diagnostic Subroutines - 6.4L 99R Diesel -- F250-F550 Super Duty) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0703 - Brake Switch B Input Circuit

P0703 - Brake Switch B Input Circuit

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0703 - BRAKE SWITCH B INPUT CIRCUIT

Description:  The brake pressure applied (BPA) switch provides a backup signal for the brake pedal position (BPP) switch. If the BPP switch signal is lost, the BPA switch provides the brakes-applied signal to deactivate the speed control system.
Possible Causes: 
  • Open or short in the BPA circuit
  • Damage in module(s) connected to the BPA circuit
  • Damaged brake switch
  • Misadjusted brake switch
Diagnostic Aids:  Check for proper function of the stoplamp. Using the scan tool, check the BPA PID. The stoplamp and PID should toggle on and off with brake pedal activation.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST AI .
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