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Power Transistor (1.5L & 3.0L)

  1. Disconnect connector from power transistor. On Excel and Scoupe, apply 3.0 volts between power transistor terminals No. 2 (negative) and No. 3 (positive). On Sonata 3.0L, apply 3.0 volts between power transistor terminals No. 1 (positive) and No. 2 (negative). See Fig 1 .
  2. Check continuity between terminals No. 1 and 2 (Excel and Scoupe) or between terminals No. 2 and 3 (Sonata 3.0L). With voltage applied to terminal No. 3 (Excel and Scoupe) or No. 1 (Sonata 3.0L), continuity should exist. With voltage removed from terminal No. 3 (Excel and Scoupe) or No. 1 (Sonata 3.0L), continuity should not exist. If continuity is not as specified, power transistor is defective.
Fig 1: Checking Power Transistor (1.5L & 3.0L Engines)
G92H24924Courtesy of HYUNDAI MOTOR CO.