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.
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HOMESERVICE MANUALSHYUNDAI2003SANTA FE BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETHEORY AND OPERATIONENGINE CONTROLS - THEORY & OPERATIONCOMPUTERIZED ENGINE CONTROLSENGINE CONTROL MODULEOTHER CONTROL FUNCTIONS
2003 Hyundai Santa Fe Base, Automatic
Other Control Functions
2003 Hyundai Santa Fe Base, AutomaticSECTION Other Control Functions
The ECM controls the fuel pump relay, A/C compressor clutch operation, radiator and condenser fan speeds, evaporative emission purge control and EGR solenoid operation.
NOTE:
Components are grouped into 2 categories. First category is INPUT DEVICES , which are components that control or produce signals monitored by the ECM. The second category is OUTPUT SIGNALS , which are components controlled by the ECM.
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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.