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Solenoid Pull-In & Hold-In Test

  1. Remove starter. Disconnect starter-to-solenoid field lead terminal. See Fig 1 . Ensure field lead does not touch starter housing. Connect negative lead of 12-volt battery to solenoid field lead terminal.
  2. Connect another lead from negative battery terminal to starter drive housing. Connect lead from positive battery terminal to solenoid "S" terminal.
  3. Pinion gear should extend quickly and completely when solenoid is energized. If pinion gear operates as specified, go to next step. If pinion gear does not operate as specified, replace solenoid.
  4. Disconnect negative battery lead from solenoid field lead terminal. If pinion gear remains extended, go to next step. If pinion gear does not remain extended, replace solenoid.
  5. Disconnect lead from starter drive housing. If pinion returns quickly to de-energized position, go to NO-LOAD TEST. If pinion does not operate as specified, repair or replace starter.
Fig 1: Testing Solenoid
G90H02253Courtesy of GENERAL MOTORS CORP.
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