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 clip (A) from the air intake boot.
2. Loosen the clamp (B) connecting the air intake boot and air cleaner case (rear).
3. Loosen the clamp (C) which connects the air intake boot and throttle body.
   Fig 1: Air Intake Boot And Throttle Body Clamp Location

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4. Remove the air intake boot from the throttle body, and move it to the left side wheel apron.
   Fig 2: Removing Air Intake Boot From Throttle Body

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5. Disconnect the inhibitor harness connector.
   Fig 3: Locating Inhibitor Harness Connector

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6. 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 4: Inhibitor Harness Connector

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7. 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. Ref. to ADJUSTMENT , Inhibitor Switch.

   Fig 5: Checking Inhibitor Switch Continuity

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8. Repeat the above inspection in other gear ranges. If there is fault, adjust the inhibitor switch and select cable. Ref. to ADJUSTMENT , Inhibitor Switch. Ref. to ADJUSTMENT , Select Cable.