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| Pin | Function | Note | |-------|-------------------------------|-----------------------------------------| | | Injector 1 (High side) | Uses pull-up resistor | | B22 | Injector 2 (High side) | Firing order: 1-3-4-2 | | B23 | Injector 3 (High side) | | | B24 | Injector 4 (High side) | | | B30 | SCV (Suction Control Valve) | Common rail inlet metering | | B31 | SCV Return | | | B28 | EGR Step Motor Coil 1 | Opens/closes EGR valve | | B29 | EGR Step Motor Coil 2 | |
Before you touch any wire:
The 4HL1-1 ECU (Part numbers often including or 898033-6140 ) acts as the brain of the vehicle. It features a multi-plug connector system with a mix of blade and pin terminals. isuzu 4hl1-1 ecu pinout
The 4HL1-1 uses a 4-cylinder, 4.8-liter turbocharged diesel engine producing between 130–190 HP depending on the tune. Its ECU controls: Its ECU controls: