Connects directly to the battery via a fuse to maintain ECU memory.
Below is the for main functions.
Processes signals from the Crankshaft Position (NE) sensor, Camshaft Position (TDC) sensor, and fuel rail pressure sensor. isuzu 4hl1-1 ecu pinout
Supplies continuous 24V (or 12V depending on chassis specifications) to maintain ECU memory. Connects directly to the battery via a fuse