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 MANUALSHONDA2020CIVIC SI, 4D SEDANREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLVSA SYSTEM - TESTING & TROUBLESHOOTING
2020 Honda Civic Si, 4D Sedan
VSA System - Testing & Troubleshooting
2020 Honda Civic Si, 4D SedanSECTION VSA System - Testing & Troubleshooting
- Symptom Troubleshooting Index
- Component Location Index
- DTC Troubleshooting Index
- Connector View
- General Information
- Symptom Troubleshooting
- VSA System Symptom Troubleshooting - ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (2/4-door (With ACC)) (2019 2020 2021)
- VSA System Symptom Troubleshooting - ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (5-door (With ACC)) (2019)
- VSA System Symptom Troubleshooting - ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (5-door (With ACC)) (2020 2021)
- VSA System Symptom Troubleshooting - ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (With ACC) (2016 2017 2018 2019)
- VSA System Symptom Troubleshooting - ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (Without ACC)
- VSA System Symptom Troubleshooting - VSA cannot be turned OFF
- Description & Operation
- VSA System Description - ABS Control
- VSA System Description - Agile Handling Assist Control
- VSA System Description - Automatic Brake Hold
- VSA System Description - Brake Assist Control
- VSA System Description - EBD Control
- VSA System Description - Engine Drag Torque Control
- VSA System Description - Hill Start Assist Control
- VSA System Description - Overview
- VSA System Description - Sensors
- VSA System Description - System Diagram (2019 2020 2021)
- VSA System Description - System Diagram (2/4-door) (2016 2017 2018)
- VSA System Description - System Diagram (5-door) (2017 2018)
- VSA System Description - TCS Control
- VSA System Description - VSA Control
- VSA System Description - VSA Modulator (2016 2017 2018)
- VSA System Description - VSA Modulator (2019 2020 2021)
- VSA System Description - VSA OFF MODE (Except Type-R)
- VSA System Description - VSA OFF MODE (Type-R) (2017 2018 2019 2020 2021)
- Symptom Troubleshooting Index for Viewer
- ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (VSA System Components)
- ABS indicator, brake system indicator (red), VSA indicator, brake system indicator (amber), or VSA OFF indicator does not come on at start-up (bulb check) (VSA System Components)
- HDS does not communicate with the VSA modulator-control unit or the vehicle (VSA System Components)
- VSA OFF indicator does not go off (VSA System Components)
- VSA cannot be turned OFF (VSA System Components)
- Circuit Diagram
- VSA System Circuit Diagram (2/4-door, Except Japan Production (With ACC)) (2016 2017 2018)
- VSA System Circuit Diagram (2/4-door, Except Japan Production (With ACC)) (2019 2020 2021)
- VSA System Circuit Diagram (2/4-door, Except Japan Production (Without ACC))
- VSA System Circuit Diagram (4-door, Japan Production (With ACC)) (2018)
- VSA System Circuit Diagram (4-door, Japan Production (Without ACC)) (2018)
- VSA System Circuit Diagram (5-door (With ACC)) (2017 2018 2019)
- VSA System Circuit Diagram (5-door (With ACC)) (2020 2021)
- VSA System Circuit Diagram (5-door (Without ACC)) (2017 2018 2019 2020 2021)
- VSA System Circuit Diagram (Japan Production) (2019 2020)
- Service Procedure
- Rewrite
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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.