When performing Nissan Zexel ECU work, follow this sequence to avoid frying the processor:
If you omit VSS (pin 7), the Zexel ECU will enter “limp mode” – idle will surge, and spill valve timing will default to retarded. nissan zexel ecu pinout work
Never use an old-school incandescent test light, as excessive current draw can destroy internal computer traces. When performing Nissan Zexel ECU work, follow this