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HOMESERVICE MANUALSACURA2023MDX BASEREPAIR AND DIAGNOSISENGINE PERFORMANCEFUEL DELIVERYFUEL AND EMISSIONS - TROUBLESHOOTINGCIRCUIT DIAGRAMFUEL AND EMISSIONS SYSTEMS CIRCUIT DIAGRAM (3.5L ENGINE) (2025)
2023 Acura MDX Base

Fuel and Emissions Systems Circuit Diagram (3.5L Engine) (2025)

2023 Acura MDX BaseSECTION Fuel and Emissions Systems Circuit Diagram (3.5L Engine) (2025)

NOTE:  For details of the CAN circuit, refer to the Network Communications Circuit Diagram.

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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.