Transmission Range Switch (Sensor) Inspection

Shift select lever to "N" range.
Check that center line on manual valve shaft (2) and "N" reference line (1) on switch are aligned. If not, loosen switch bolt and align them.

Fig 1: Aligning Center Line On Manual Valve Shaft And "N" Reference Line On Switch
Courtesy of SUZUKI OF AMERICA CORP.
Check that engine starts in "N" and "P" ranges but it doesn't start in "D", "2", "L" or "R" range. Also, check that back-up lamp lights in "R" range.
Disconnect transmission range switch coupler and check that continuity exists as shown by moving select lever.

Fig 2: Disconnecting Transmission Range Switch Coupler

Courtesy of SUZUKI OF AMERICA CORP.