Isuzu — 4hl1-1 Ecu Pinout

⚠️ Pins A05–A08 carry high-voltage injector pulses. Never probe these with a standard multimeter unless using a high-impedance lab scope. Doing so can short driver transistors in the ECU.

: Camshaft (CMP) and Crankshaft (CKP) Position Sensors. Control Outputs (Actuators) : isuzu 4hl1-1 ecu pinout

If you are doing a standalone engine swap, you do not need all 121 pins. You need these to make it run (assuming you keep the Isuzu ECU): ⚠️ Pins A05–A08 carry high-voltage injector pulses

Have a 4HL1 no-start or a wire you can't identify? Leave a comment with symptoms and measured voltages. isuzu 4hl1-1 ecu pinout