Z31/SENSORS/powertransistor php

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Z31 Power Transistor and Circuit

The Ignition Signal from the E.C.C.S control unit is amplified by the power transistor, which connects and disconnects the coil primary circuit to induce the proper high voltage in the secondary circuit.

WARNING - Do this modification at your own risk. We Are not responsable for any issues of your own doing.

Common Problems

• Loss Of Spark

Troubleshooting

Below you will see how to troubleshoot this circuit.

Click to enlarge (Image from Nissan Motor Company Factory Service Manual)

Upgrade for the Power Transistor

As our Z31s get older and the supply of Power transistors diminishes, a replacement is needed. The newer PRW-2 transistor, found on several distributor-equipped Nissans, can be easily swapped in to replace the stock unit.