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Summary of change:
Car: Nissan 240SX Engine: KA-24 4 cylinder Low-z Injectors, Honda resistor box 6.5 Ohm Hall trigger mounted in distributor, sensing a 4 window wheel. '''ECU #2168 (Order #3255)''' Car ran well every day for a week. '''Then, one day the Fan output(P259 Ch01) stuck ON, and later, it lost fuel Injector Ch 03 (Pin 20)''' '''I changed the fuel Injector to Ch04, and the Fan to P259 Ch6.''' '''I checked the GND5 connections, they measure 0.1 Ohm between them. Main Ground is 12 awg wire to engine block.''' '''I checked the Flyback wire. The Flyback wire is ran to the 12v input to the Honda resistor box. The resistor box has a common 12v supply, then branches out to the 4 injectors.''' '''Also, I added a wire from the Ignition output (IGBT 20) to the car's OEM Tachometer.''' '''Today, the ecu lost the Injector Ch04 driver'''
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