Code P0703: TCC Brake Switch Input: Notes
PCM monitors status of TCC brake switch input. Code P0703 will set when the following conditions are present.
- Code P0501 is not present.
- Vehicle speed has been greater than 35 MPH for 10 seconds and back to zero MPH 5 times.
- TCC brake switch input status has not changed from released to applied, or applied to released as displayed on scan tester.
- VSS signal generator only produces a signal if drive wheels are turning greater than 3 MPH.
- Check PROM for correct application before replacing PCM.