Isuzu 4jk1 Wiring Diagram 2021
| Connector Code | Description | Location | Diagram Page (Factory Manual) | | :--- | :--- | :--- | :--- | | | ECM Main 128-pin | Behind glove box | 6E-12 | | C-115 | Engine Harness to Chassis | Left inner fender (near brake booster) | 6E-34 | | C-204 | Fuel Injector Harness Junction | Top of valve cover (under acoustic cover) | 6E-41 | | C-301 | Glow Plug Controller | Rear of cylinder head (driver side) | 6E-56 | | C-410 | DPF Differential Pressure | Front of DPF canister (under cab) | 6E-89 |
Unlike earlier models, the 2021 4JK1 uses exhaust sensors: Isuzu 4jk1 Wiring Diagram 2021
Critical sensors include the Crankshaft (NE) and Camshaft (TDC) position sensors, Boost Pressure sensor, and Mass Air Flow (MAF) meter. | Connector Code | Description | Location |