Safety lessons Sam learned and practiced:
Found on specific pins (often a green wire) used for communicating with OBD-I or early OBD-II scanners via the Nissan Consult protocol. nissan zexel ecu pinout
Generally high; built to withstand harsh diesel engine bay environments. Diagnostics Safety lessons Sam learned and practiced: Found on
For those looking to adjust performance, Zexel ECUs store data in hexadecimal maps. Expert forums like ECU Connections identify critical data locations for these units: Expert forums like ECU Connections identify critical data
Most Zexel diesel pump ECUs have an (sometimes a 12-pin with only 8 used).
Next Sam traced sensors. With the engine cold, one input rose and fell as the engine warmed; that was coolant temperature (ECT). Another varied smoothly with throttle movement — the throttle position sensor (TPS). Crank and cam signals needed a scope, but a quick test with a timing-light-style pickup when cranking showed pulses on one pin: