Park/Neutral (P/N) Switch (C-1)
- Disconnect P/N switch harness connector. Connect ohmmeter between the P/N switch terminals. See Fig 1 . Continuity should be present only when gear shift selector is in Park or Neutral. If continuity is not present, check P/N switch adjustment or replace defective P/N switch.
- With park/neutral switch connector disconnected, turn ignition on. Check for 12 volts on the Orange/Black wire of park/neutral switch harness. If 12 volts are not present, check for open or short to ground between switch harness connector and ECM.