INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
Apply the parking brake.
Turn the engine switch on (IG).
Depress the brake pedal and check that the engine starts when the shift lever is in N or P, but does not start in other positions.
Check that the back-up light comes on and the reverse warning buzzer sounds when the shift lever is in R, but the light and buzzer do not operate in other positions.
If a failure is found, check the park/neutral position switch for continuity.