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.
Functions Within The System
ECM controls the engine system based on signals from the various control modules and sensors.
INDIVIDUAL FUNCTION WITHIN THE SYSTEM
- The ECM consists of the microcomputer and input/output connectors for signal and power supply.
- When the ignition switch is turned OFF, power is supplied continuously from the battery for maintaining the DTC and memory functions.
- The ECM includes a self-diagnosis function for simplifying trouble diagnosis.
- For supporting DIG (Direct Injection Gasoline), the ECM includes a high-voltage injector driver.
- The ECM contains an atmospheric pressure sensor.
INDIVIDUAL OPERATION
The ECM controls a variety of engine systems. Refer to System Description .
Component Location
The ECM is installed on the underside of the vehicle front side of the left front fender protector.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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