Code P0705 - Gear Range Switch Circuit: Notes

WARNING: This page is about a different car, the 1995 Pontiac Trans Sport, 1995 Oldsmobile Silhouette, and 1995 Chevrolet Lumina APV. However, it is still accessible from the selected car via links, so may be relevant.

Gear range switch contacts are part of neutral start switch. Contacts close to ground in various combinations to indicate each gear range. The voltage level of each switch is indicated as low (grounded circuit) or high (open circuit). Code 705 will set if conditions occur as follows:

Ignition is on and engine is off.
Vehicle speed is zero MPH.
Transmission is in high gear.
Gear range switch inputs indicate a gear other than Park or Neutral.
All conditions have been met for at least 10 seconds.
NOTE: Test numbers refer to numbers on diagnostic chart.

& 2) Tests for proper operation of gear range switch.
This tests for an open or grounded circuit.