Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
FD: Brake Pedal Inputs
FD: Introduction
FD1 CHECK FOR DTCS
Are DTCs P0504, P0571, P0572, P0573, P05FF, P0703, P1572 or P1703 present?
Yes | No |
|---|---|
For KOER DTCs P0571, P05FF, P0703 or P1703, GO to FD2 . For all others, GO to FD3 . | RETURN to Section 3 , Symptom Charts for further direction. |
FD2 VERIFY THE BRAKE PEDAL WAS APPLIED
Was the brake pedal applied and released during the KOER self-test?
Yes | No |
|---|---|
GO to FD3 . | REPEAT the KOER self-test. APPLY and RELEASE the brake pedal during the KOER test. Clear the PCM DTCs. REPEAT the self-test. |
FD3 CHECK THE OPERATION OF THE STOPLAMPS
• Ignition ON, engine OFF.
• Apply and release the brake pedal and check the stop lamp operation.
Do the stoplamps operate correctly?
Yes | No |
|---|---|
GO to FD4 . | Clear the PCM DTCs. REPEAT the self-test. |
FD4 CHECK THE BPP SWITCH OPERATION
• Ignition ON, engine OFF.
• Access the PCM and monitor the BOO1 (MODE) PID.
• Apply and release the brake pedal while monitoring the brake position PID.
Does the PID cycle ON and OFF?
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.