If you are swapping a Zexel-controlled TD27ETi or QD32ETi into an older 4x4 vehicle (like a mechanical-pump Safari or an older Toyota Hilux), you do not need to wire the entire vehicle harness to get the engine running.
Synchronizes communication timing between devices. nissan zexel ecu pinout
Probe the Timing Control Valve output pin from the Zexel pump to ensure the ECU is successfully pulsing the advance mechanism. If you are swapping a Zexel-controlled TD27ETi or
Tracks Top Dead Center for cylinder sequencing. nissan zexel ecu pinout
Do not wire the ECU directly to the ignition switch. Use a standard 4-pin automotive relay:
Sends a clean square-wave speed signal to the instrument cluster.