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.

1. VSS signal generator only produces a signal if drive wheels are turning greater than 3 MPH.
2. Check PROM for correct application before replacing PCM.

Fig 1: Code P0703 Schematic (3.8L) TCC Brake Switch Input

Fig 2: Code P0703 Diagnostic Flow Chart (3.8L) TCC Brake Switch Input