Note. For circuit reference, see WIRING DIAGRAMS - 4.3L article.
Circuit Description
DTC determines if transmission clutch switch has failed by looking for a clutch switch transition within a range from zero MPH to some higher speed.
Conditions for setting DTC
- No VSS DTCs are set.
- Vehicle speed currently is zero MPH.
- Vehicle speed has been greater than 40 MPH.
- Brake switch not currently pressed.