Code 33, Extended Travel Brake Switch: Notes

If Code 133 or 137 is also set, diagnose those codes first. Code will set if Codes 90, 106, 133 or 137 are not set, traction control or ABS system are operating normally and non-drive wheel speed is 36 MPH or greater, or non-drive wheel speed of 36 MPH or greater has occurred and has not fallen below 1.2 MPH since and a 2.5 MPH or greater decrease in non-drive wheel speed in 0.2 second.