Inhibitor Switch: Inspection

When the driving condition or starter motor operation is improper, first check the shift linkage for improper operation. If the shift linkage is functioning properly, check the inhibitor switch.

1. Remove the air intake boot assembly. Refer to REMOVAL .
2. Disconnect the inhibitor harness connector.
   Fig 1: Locating Inhibitor Harness Connector

   Courtesy of SUBARU OF AMERICA, INC.
3. Check for continuity in inhibitor switch circuit by shifting the select lever in "P", "R", "N" and "D" respectively.
   NOTE:

   • Check that there is no continuity in the starter circuit when the select lever is in the "R" and "D" ranges.
   • When inhibitor switch is normal, check there is no poor contact in vehicle side connector and no open circuit in harness.

   Signal sent to TCM	Range	Terminal No.
   	P	1 - 7
   	R	2 - 7
   	N	3 - 7
   	D	4 - 7
   Starter circuit	P/N	15 - 16
   Back-up light circuit	R	13 - 14

   Fig 2: Identifying Inhibitor Harness Connector

   Courtesy of SUBARU OF AMERICA, INC.
4. Check that there is continuity at equal points when the select lever is moved 1.5° in both directions from the "N" range.

   If there is continuity in only one direction or in other points, adjust the inhibitor switch. Refer to ADJUSTMENT .

   Fig 3: Checking Inhibitor Switch Continuity At Equal Points

   Courtesy of SUBARU OF AMERICA, INC.
5. Repeat the above inspection in other gear ranges. If there is fault, adjust the inhibitor switch and select cable. Refer to ADJUSTMENT  and ADJUSTMENT .