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 MANUALSHONDA2008RIDGELINE RTLREPAIR AND DIAGNOSISENGINE MECHANICALFUEL SYSTEMFUEL AND EMISSIONS SYSTEMSSYSTEM DESCRIPTIONELECTRONIC THROTTLE CONTROL SYSTEM DIAGRAM
2008 Honda Ridgeline RTL
Electronic Throttle Control System Diagram
2008 Honda Ridgeline RTLSECTION Electronic Throttle Control System Diagram
The electronic throttle control system consists of the throttle actuator, throttle position (TP) sensor A/B, accelerator pedal position (APP) sensor A/B, electronic throttle control system (ETCS) control relay, and the PCM.
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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.