Power Transistor

Disconnect connector from power transistor. To check power transistor for cylinders No. 1 and 4, apply 1.5 volts between power transistor terminals No. 3 (negative) and 4 (positive). See Fig 1 or Fig 2 .
Using analog ohmmeter, check continuity between terminals No. 3 and 5. With voltage applied to terminal No. 4, continuity should exist. With voltage removed from terminal No. 4, continuity should not exist.
To check power transistor for cylinders No. 2 and 3, apply 1.5 volts between power transistor terminals No. 2 (positive) and 3 (negative). Using analog voltmeter, check for continuity between terminals No. 1 and 3. With voltage applied to terminal No. 2, continuity should exist. With voltage removed from terminal No. 2, continuity should not exist.

Fig 1: Checking Power Transistor (1.5L & 3.0L)

Courtesy of HYUNDAI MOTOR CO.

Fig 2: Checking Power Transistor (1.6L & 2.0L)

Courtesy of HYUNDAI MOTOR CO.