Nissan/Datsun 200SX/510/610/710/810/Maxima 1973-1984 Repair Guide

Neutral Safety Switch

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REMOVAL, INSTALLATION & ADJUSTMENT



1973-80 Models

The switch unit is bolted to the left side of the transmission case, behind the transmission shift lever. The switch prevents the engine from being started in any transmission position except Park or Neutral. It also controls the backup lights.

  1. Apply the brakes and check to see that the starter works only in the P and N transmission ranges. If the starter works with the transmission in gear, adjust the switch as described below.
  2.  
  3. Remove the transmission shift level retaining nut and the lever.
  4.  
  5. Remove the switch.
  6.  
  7. Remove the machine screw in the case under the switch.
  8.  

To install:

  1. Align the switch to the case by inserting a 1.5mm pin, through the hole in the switch into the screw hole. Mark the switch location.
  2.  
  3. Remove the pin, replace the machine screw, install the switch as marked, and replace the transmission shift lever and retaining nut.
  4.  
  5. Make sure while holding the brakes on, that the engine will start only in Park or Neutral. Check that the backup lights go on only in Reverse.
  6.  

1981-84 Models


Click image to see an enlarged view

Fig. Fig. 1 Remove the screw from the inhibitor switch as shown



Click image to see an enlarged view

Fig. Fig. 2 Adjust the inhibitor switch with an aligning pin, as shown

The switch unit is bolted to the the transmission case, behind the transmission shift lever. The switch prevents the engine from being started in any transmission position except Park or Neutral. It also controls the backup lights.

  1. Place the transmission selector lever in the Neutral range.
  2.  
  3. Remove the screw from the switch (see illustration).
  4.  
  5. Loosen the attaching bolts. With a aligning pin (2.0mm diameter) move the switch until the pin falls into the hole in the rotor.
  6.  
  7. Tighten the attaching bolts equally.
  8.  
  9. Make sure while holding the brakes on, that the engine will start only in Park or Neutral. Check that the backup lights go on only in Reverse.
  10.  

 
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