Step by step guide on how to test an automotive natural safety switch, this
article pertains to most automatic transmission vehicles.
Difficulty Scale: 3 of 10
Step 1 - Identify the neutral safety switch
which is located on the left side of the transmission and controls engine
starter operation along with reverse lights and gear selection feedback data
used by the computer.
Tip : If the
starter is not working
when the vehicle is in park, try pushing down on the brake pedal and putting the
transmission in neutral, this will bypass the park circuit of the switch
allowing the starter to operate if the park circuit has failed.
Tip: If a neutral safety switch becomes maladjusted, it
can cause the switch to malfunction, confirm the adjustment of the switch.