Diesel Data: Automotive Repair

Neutral Safety Switch: Adjustments

PARK/NEUTRAL POSITION SWITCH ADJUSTMENT

IMPORTANT:
- The following procedure is for vehicles that have not had the switch removed or replaced.
- Apply the parking brake.
- The engine must start in the P (Park) or N (Neutral) positions only.
- Check the switch for proper operation. If adjustment is required, proceed as follows:

1. Place the transmission range selector in the N (Neutral) position.
2. With an assistant in the drivers seat, raise the vehicle. Refer to Vehicle Lifting.
3. Loosen the park/neutral position switch mounting bolts
4. With the vehicle in the N (Neutral) position, rotate the switch while the assistant attempts to start the engine
5. Following a successful start, turn the engine off

NOTE: Refer to Fastener Notice in Service Precautions.

6. Tighten the bolts securing the switch to the transmission

Tighten
Tighten the bolts to 25 N-m (18 lb ft).

7. Lower the vehicle.
8. Check the switch for proper operation. The engine must start in the P (Park) or N (Neutral) positions only.
9. Replace the park/neutral position switch if proper operation can not be achieved.