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.
Electric Divert/Electric Air Switching Valve (EDES)
Electric divert/electric air switching valve (EDES) combines both air diverter valve and air switching valve into one integral component.
ECM controls air divert valve by controlling vacuum solenoid in EDES valve. EDES valve will divert air during these operating conditions: Rich conditions, deceleration, high RPM and whenever ECM recognizes a problem and sets check engine light.
ECM also controls air switching function of EDES valve by directing Air Injection flow to exhaust ports during cold engine operation (open loop), and to catalytic converter during warm engine operation (closed loop).
NO RELATED
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.