The Isuzu 4HL1-1 engine is a popular 4.8-liter common rail diesel engine found in various applications, including the Isuzu NPR, NQR, and F-Series trucks, as well as various industrial and marine applications.
| Pin # | Signal Name | Signal Description | | --- | --- | --- | | 1 | FUEL PUMP | Fuel Pump Control | | 2 | INJECTOR 1 | Injector 1 Control | | 3 | INJECTOR 2 | Injector 2 Control | | 4 | INJECTOR 3 | Injector 3 Control | | 5 | INJECTOR 4 | Injector 4 Control | | 6 | EGR VALVE | EGR Valve Control | | 7 | TURBO BOOST | Turbo Boost Pressure Sensor | | 8 | EXHAUST GAS TEMP | Exhaust Gas Temperature Sensor | | ... | ... | ... | isuzu 4hl1-1 ecu pinout
The 4HL1 engine control system is detailed in official workshop manuals, which identify the primary interface points as connectors 81-Way Connector (Engine Side): The Isuzu 4HL1-1 engine is a popular 4
Isuzu Elf NKR NPR 4HL1-1 24V Diesel Engine Control Unit ECU ECD ECM 8973738770 | OE | Front | Screw-In | Male | Blade | Plastic | Optimal Durability 897373-8770, 898033-6140, and 898033-6150
The 4HL1-1 uses a or MS6C ECU (Engine Control Unit), depending on the chassis specification. This guide focuses on the 80-pin connector layout you will find on the majority of these engines.
897373-8770, 898033-6140, and 898033-6150.