The 1SZ-FE ECU manages fuel injection and ignition timing; understanding its pinout is vital for complex diagnostic repairs or custom modifications. How to Use the Manual for Repairs
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Apply a thin layer of clean engine oil to the threads and under the heads of the new bolts. The 3-Step Torque Procedure The 1SZ-FE ECU manages fuel injection and ignition
| Component | Torque | | :--- | :--- | | Cylinder head bolts (Step 1) | 39 N·m (400, 29) | | Cylinder head bolts (Step 2) | Turn 90° | | Cylinder head bolts (Step 3) | Turn additional 90° | | Camshaft bearing cap (10mm bolt) | 14 N·m (140, 10) | | Crankshaft pulley bolt | 150 N·m (1,530, 111) | | Connecting rod cap nut | 29 N·m (300, 22) + 90° | | Main bearing cap bolt | 30 N·m (306, 22) + 90° | | VVT-i oil control valve | 21 N·m (214, 15) | | Spark plug (14mm thread) | 20 N·m (204, 15) | The 3-Step Torque Procedure | Component | Torque