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DIAGRAM 1: 1990, 1991, 1992, 1993 3.0L Pick Up And Pathfinder
The above typical ignition system wiring diagram applies only to the 1990, 1991, 1992, 1993 3.0L V6 Nissan D21 Pick Up and Pathfinder. It includes the following circuits: ignition coil, power transistor (ignition control module), and camshaft position sensor.
You can find the camshaft position sensor test here: How To Test The Camshaft Position Sensor (1990-1995 Nissan Pick Up And Pathfinder).