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Home >> Nissan-Datsun >> 1991 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> Optical (300ZX) >> Ignition Coil/Power Transistor Relay
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Ignition Coil/Power Transistor Relay

  1. Connect a 12-volt power source between terminals No. 1 and 2 of relay. See Fig 1 . Check continuity between terminals No. 3 and 5. Continuity should exist while relay is energized.
  2. Disconnect power source and check continuity between terminals No. 3 and 5. Continuity should NOT exist. Check harness and connectors. If harness and connectors are okay, replace ignition coil/power transistor relay.
Fig 1: Identifying Ignition Coil/Power Transistor Relay Terminals (300ZX)
G62496Courtesy of NISSAN MOTOR CO., U.S.A.
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