Isuzu 4hl1-1 Ecu Pinout May 2026

| Pin Number | Signal Name | Description | | --- | --- | --- | | A-01 | ENG_SPEED | Engine speed sensor signal | | A-02 | FUEL_TEMP | Fuel temperature sensor signal | | A-03 | BOOST_PRESS | Boost pressure sensor signal | | ... | ... | ... | | B-01 | INJ_1 | Fuel injector control signal (cylinder 1) | | B-02 | INJ_2 | Fuel injector control signal (cylinder 2) | | ... | ... | ... |