Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2000 Toyota RAV4 2-Door 2WD L4-2.0L (3S-FE)FACTORY OEM SERVICE PROCEDURE
Engine Control Module: Description and Operation
DESCRIPTION
The Engine Control Module (ECM) controls all phases of electrical engine operation. In order to accomplish this control, the ECM relies on the input from a variety of engine operation sensors.
The ECM compares input signals with those stored in memory to determine what steps should be taken to achieve maximum performance, fuel economy, and meet emission standards. The ECM outputs the necessary signals to the fuel system, ignition system, emission control systems, etc..
The Engine Control Module (ECM) controls all phases of electrical engine operation. In order to accomplish this control, the ECM relies on the input from a variety of engine operation sensors.
The ECM compares input signals with those stored in memory to determine what steps should be taken to achieve maximum performance, fuel economy, and meet emission standards. The ECM outputs the necessary signals to the fuel system, ignition system, emission control systems, etc..
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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