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Engine Control System

Engine control system is a computerized emission, ignition and fuel injection control system. Engine control system lowers exhaust emissions while maintaining good fuel economy and driveability. Engine control system consists of various sensors, switches and control units. See Fig 1-23. An Engine Control Module (ECM) controls engine control system based on input signals received from various input devices. The ECM contains preprogrammed data to maintain optimum engine performance under all operating conditions.

Fig 1: Locating Engine Control System Components (Avalon)

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Fig 2: Locating Engine Control System Components (Camry 2.2L 4-Cyl.)

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Fig 3: Locating Engine Control System Components (Camry 3.0L V6)

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Fig 4: Locating Engine Control System Components (Celica)

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Fig 5: Locating Engine Control System Components (Corolla)

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Fig 6: Locating Engine Control System Components (Land Cruiser & LX470)

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Fig 7: Locating Engine Control System Components (RAV4)

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Fig 8: Locating Engine Control System Components (Sienna)

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Fig 9: Locating Engine Control System Components (Supra Non-Turbo)

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Fig 10: Locating Engine Control System Components (Supra Turbo)

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Fig 11: Locating Engine Control System Components (Tacoma 2.4L 4 Cyl. & 2.7L 4-Cyl.)

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Fig 12: Locating Engine Control System Components (Tacoma 3.4L V6)

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Fig 13: Locating Engine Control System Components (Tercel)

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Fig 14: Locating Engine Control System Components (T100 2.7L 4-Cyl.)

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Fig 15: Locating Engine Control System Components (T100 3.4L V6)

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Fig 16: Locating Engine Control System Components (4Runner 2.7L 4 Cyl.)

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Fig 17: Locating Engine Control System Components (4Runner 3.4L V6)

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