LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2007 >> Focus SE, 2D Hatchback, Automatic >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Vehicle Dynamic Systems >> Diagnostic Tests >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test A: Brake Switch Circuit Failure >> Pinpoint Test A: DTC C1446 - Brake Switch Circuit Failure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test A: DTC C1446 - Brake Switch Circuit Failure

CAUTION: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. A1 CHECK THE STOPLAMP OPERATION 
    • Check the stoplamps for correct operation by pressing and releasing the brake pedal and observing the stoplamps.
    • Do the stoplamps operate correctly?  
    1. YES  : Go to  A2.
    2. NO  : REFER to EXTERIOR LIGHTING article for further diagnosis of the stoplamps.
  2. A2 MONITOR THE BRAKE SWITCH PID 
    • Key in OFF position.
    • Connect the diagnostic tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Generic Electronic Module (GEM) PID
    • Monitor the GEM brake switch PID status while pressing and releasing the brake pedal.
    • Does the PID value agree with the positions of the brake switch? 
    1. YES  : Go to  A3.
    2. NO  : Go to  A4.
  3. A3 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect the ABS connector.
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect the ABS connector and make sure it is seated correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
  4. A4 CHECK FOR CORRECT GEM OPERATION 
    • Disconnect all GEM connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect all GEM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new GEM. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
scientia non olet · About LEMON Manuals