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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2009 Honda Civic Si, 4D Sedan
External Pages
2009 Honda Civic Si, 4D SedanSECTION External Pages
These are pages that do not belong to the exact selected vehicle (2009 Honda Civic Si, 2D Coupe), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
- Different variant/trim
- Section 1 (Cooling System (R18A1 Engine))
- Section 2 (Fuel Supply System (R18A1/R18A4))
- Section 3 (Intake Air System (R18A1 Engine))
- Section 4 (Charging System (R18A1 Engine) (Except Hybrid))
- Section 5 (Ignition System (R18A1 Engine))
- Section 6 (Starting System (R18A1/R18A4))
- Section 7 (Idle Control System (R18A1/R18A4))
- Section 8 (Cruise Control Systems (R18A1 Engine))
- Section 9 (Catalytic Converter System (R18A1/R18A4))
- Section 10 (Fan Controls (R18A1/R18A4))
- Section 11 (Electronic Throttle Control System (R18A1/R18A4))
- Section 12 (EGR System (R18A1/R18A4))
- Section 13 (EVAP System (R18A1/R18A4))
- Section 14 (Variable Valve Timing Electronic Control System (VTEC - R18A1 Engine))
- Section 15 (PCV System (R18A1/R18A4))
- Section 16 (General Information (Hybrid))
- Section 17 (Maintenance (Hybrid))
- Section 18 (Engine Lubrication System (Hybrid))
- Section 19 (Steering (Hybrid))
- Section 20 (Front And Rear Suspension (Inspection) (Hybrid))
- Section 21 (Driveline/Axle (Hybrid))
- Section 22 (Cooling System (Hybrid))
- Section 23 (Wipers/Washers (Hybrid))
- Section 24 (Intake Manifold And Exhaust System (Hybrid))
- Section 25 (Fuel Supply System (Hybrid))
- Section 26 (Intake Air System (Hybrid))
- Section 27 (HVAC (Hybrid))
- Section 28 (Ignition System (Hybrid))
- Section 29 (Cylinder Head (Hybrid))
- Section 30 (Starting System (Hybrid))
- Section 31 (12 Volt Battery (Hybrid))
- Section 32 (Relays (Hybrid))
- Section 33 (Ignition Switch (Hybrid))
- Section 34 (Fuel System & Emissions System (Hybrid))
- Section 35 (Engine Assembly (Hybrid))
- Section 36 (Idle Control System (Hybrid))
- Section 37 (Body Electrical (General Troubleshooting) (Hybrid))
- Section 38 (Exterior Lights (Hybrid))
- Section 39 (Exterior Trim (Hybrid))
- Section 40 (Front Suspension (Hybrid))
- Section 41 (Engine Block (Hybrid))
- Section 42 (3-Stage Intelligent Variable Valve Timing Electronic Control System (I-VTEC) (Hybrid))
- Section 43 (Hood (Hybrid))
- Section 44 (Fan Controls (Hybrid))
- Section 45 (Electronic Throttle Control System (Hybrid))
- Section 46 (EGR System (Hybrid))
- Section 47 (Catalytic Converter System (Hybrid))
- Section 48 (EVAP System (Hybrid))
- Section 49 (PCV System (Hybrid))
- Section 50 (Under-Hood Fuse/Relay Box (Hybrid))
- Section 51 (Seats (Hybrid))
- Section 52 (Abs (Anti-Lock Brake System) (Hybrid))
- Section 53 (Tire Pressure Monitoring System (Hybrid))
- Section 54 (Immobilizer System (Hybrid))
- Section 55 (Multiplex Integrated Control System (Hybrid))
- Section 56 (Interior Trim (Hybrid))
- Section 57 (Consoles (Hybrid))
- Section 58 (Dashboard (Hybrid))
- Section 59 (FENDERWELL (Hybrid))
- Section 60 (Rear Suspension (Hybrid))
- Section 61 (Doors (Hybrid))
- Section 62 (Power Windows (Hybrid))
- Section 63 (Mirrors (Hybrid))
- Section 64 (Openers (Hybrid))
- Section 65 (Seat Belts (Hybrid))
- Section 66 (Interior Lights (Hybrid))
- Section 67 (Bumpers (Hybrid))
- Section 68 (Fuel Fill Door (Hybrid))
- Section 69 (Under-Dash Fuse/Relay Box (Hybrid))
- Section 70 (Fuse/Relay Boxes (Hybrid))
- Section 71 (Keyless/Power Door Locks/Security System (Hybrid))
- Section 72 (Entry Lights Control System (Hybrid))
- Section 73 (Turn Signal/Hazard Warning Lights (Hybrid))
- Section 74 (DTC Index (Hybrid))
- Section 75 (PGM-FI System (Hybrid))
- Section 76 (Connectors And Harnesses (Hybrid))
- Section 77 (IMA System (Hybrid))
- Section 78 (Advanced Hydraulic Booster (Hybrid))
- Section 79 (Display And Gauge System (Hybrid))
- Section 80 (Continuously Variable Transmission (CVT) (Hybrid))
- Section 81 (Conventional Brake Components (Hybrid))
- Section 82 (Navigation System (Hybrid))
- Section 83 (HANDSFREELINK System (Hybrid))
- Section 84 (Manual Transmission (5-Speed))
- Section 85 (Automatic Transmission (Except Hybrid))
- Section 86 (PGM-FI System (R18A1 Engine))
- Section 87 (VSA (Vehicle Stability Assist) System Components (Hybrid))
- Section 88 (Fuel System & Emissions System (R18A1 Engine))
- Section 89 (PGM-FI System (Supplemental) (GX))
- Section 90 (Fuel Supply System (Supplemental) (GX))
- Section 91 (Conventional Brake Components (GX))
- Section 92 (Cylinder Head (GX))
- Section 93 (Ignition System (Supplemental) (GX))
- Section 94 (Fuel System & Emissions System (Supplemental) (GX))
- Section 95 (Idle Control System (Supplemental) (GX))
- Section 96 (Intake Manifold And Exhaust System (Supplemental) (GX))
- Section 97 (Catalytic Converter System (Supplemental) (GX))
- Section 98 (Cooling System (GX))
- Section 99 (Engine Block (Supplemental) (GX))
- Section 100 (Intake Air System (Supplemental) (GX))
- Section 101 (Reminder Systems (Supplemental) (GX))
- Section 102 (Relays (Supplemental) (GX))
- Section 103 (Connectors And Harnesses (Supplemental) (GX))
- Section 104 (Rear Seats (Supplemental) (GX))
- Section 105 (Interior Trim (Supplemental) (GX))
- Section 106 (Fuel Fill Door (Supplemental) (GX))
- Section 107 (FENDERWELL (Supplemental) (GX))
- Section 108 (Frame (Supplemental) (GX))
- Section 109 (Multiplex Integrated Control System (Supplemental) (GX))
- Section 110 (Ground Distribution (Supplemental) (GX))
- Section 111 (SRS (Supplemental Restraint System) (Hybrid))
- Section 112 (Audio System (Hybrid))
- Section 113 (EGR Function Testing - HONDA)
- Different car
- Section 1 (General Information)
- Section 2 (Ignition System)
- Section 3 (Cruise Control Systems)
- Section 4 (Cylinder Head)
- Section 5 (Engine Block)
- Section 6 (Engine Lubrication System)
- Section 7 (Intake Manifold And Exhaust System)
- Section 8 (Cooling System)
- Section 9 (Fan Controls)
- Section 10 (Fuel And Emissions Systems)
- Section 11 (PGM-FI System)
- Section 12 (Idle Control System)
- Section 13 (Fuel Supply System)
- Section 14 (Intake Air System)
- Section 15 (EVAP System)
- Section 16 (Fuel And Emissions Systems)
- Section 17 (Electronic Throttle Control System)
- Section 18 (VTEC)
- Section 19 (Idle Control System)
- Section 20 (Fuel Supply System)
- Section 21 (Intake Air System)
- Section 22 (EVAP System)
- Section 23 (Clutch)
- Section 24 (Driveline/Axle)
- Section 25 (Power Steering)
- Section 26 (Front And Rear Suspension (Inspection))
- Section 27 (Abs (Anti-Lock Brake System))
- Section 28 (Doors)
- Section 29 (Sliding Roof)
- Section 30 (Interior Trim)
- Section 31 (Consoles)
- Section 32 (Dashboard)
- Section 33 (Seats)
- Section 34 (Bumpers)
- Section 35 (FENDERWELL)
- Section 36 (Body Electrical (General Troubleshooting))
- Section 37 (Relays And Control Unit Locations)
- Section 38 (Connectors And Harnesses)
- Section 39 (Fuse/Relay Boxes)
- Section 40 (Battery)
- Section 41 (Relays)
- Section 42 (Ignition Switch)
- Section 43 (Exterior Lights)
- Section 44 (Turn Signal/Hazard Warning Lights)
- Section 45 (Immobilizer System)
- Section 46 (Power Convertible Top)
- Section 47 (Seat Belts)
- Section 48 (Tire Pressure Monitoring System)
- Section 49 (Heating System)
- Section 50 (Navigation System (Hybrid))
- Section 51 (Navigation System (Except Hybrid))
- Section 52 (Audio System (Except Hybrid))
- Section 53 (Electrical Component Locator)
- Section 54 (Starting System)
- Section 55 (PGM-FI System)
- Section 56 (Charging System)
- Section 57 (VSA (Vehicle Stability Assist) System Components)
- Section 58 (Gauges)
- Section 59 (SRS (Supplemental Restraint System))
- Section 60 (Conventional Brake Components)
- Section 61 (Electrical Power Steering (EPS))
- Section 62 (Heating/Air Conditioning)
- Section 63 (Audio System)
- Section 64 (General Information)
- Section 65 (IMA System)
- Section 66 (Maintenance)
- Section 67 (Engine Lubrication System)
- Section 68 (Conventional Brake Components)
- Section 69 (Steering)
- Section 70 (Front Suspension And Rear Suspension (Inspection))
- Section 71 (Driveline/Axle)
- Section 72 (Cooling System)
- Section 73 (Continuously Variable Transmission (CVT))
- Section 74 (Intake Manifold And Exhaust System)
- Section 75 (Fuel Supply System)
- Section 76 (Intake Air System)
- Section 77 (Heating, Ventilation And Air Conditioning)
- Section 78 (Ignition System)
- Section 79 (Cylinder Head)
- Section 80 (Starting System)
- Section 81 (Fuel System & Emissions System)
- Section 82 (12 Volt Battery)
- Section 83 (Relays)
- Section 84 (Ignition Switch)
- Section 85 (Immobilizer System)
- Section 86 (PGM-FI System)
- Section 87 (Idle Control System)
- Section 88 (Exterior Trim)
- Section 89 (Multiplex Integrated Control System)
- Section 90 (Gauges)
- Section 91 (Exterior Lights)
- Section 92 (SRS (Supplemental Restraint System))
- Section 93 (Engine Assembly)
- Section 94 (Front Suspension)
- Section 95 (Catalytic Converter System)
- Section 96 (Engine Block)
- Section 97 (Fan Controls)
- Section 98 (Electronic Throttle Control System)
- Section 99 (EGR System)
- Section 100 (EVAP System)
- Section 101 (VTEC System)
- Section 102 (Connectors And Harnesses)
- Section 103 (Abs Components)
- Section 104 (VSA (Vehicle Stability Assist) System Components)
- Section 105 (Tire Pressure Monitoring System)
- Section 106 (Under-Dash Fuse/Relay Box)
- Section 107 (Ground Distribution)
- Section 108 (FENDERWELL)
- Section 109 (Dashboard)
- Section 110 (Seats)
- Section 111 (Interior Trim)
- Section 112 (Wipers/Washers)
- Section 113 (Consoles)
- Section 114 (Rear Suspension)
- Section 115 (Body Electrical (Special Tools))
- Section 116 (Doors)
- Section 117 (Mirrors)
- Section 118 (Power Windows)
- Section 119 (Hatch)
- Section 120 (Interior Lights)
- Section 121 (Audio System)
- Section 122 (Navigation System)
- Section 123 (Seat Belts)
- Section 124 (Bumpers)
- Section 125 (Hood)
- Section 126 (Fuse/Relay Boxes)
- Section 127 (Keyless/Power Door Locks/Security System)
- Section 128 (Turn Signal/Hazard Warning Lights)
- Section 129 (HANDSFREELINK System)
- Section 130 (Entry Lights Control System)
- Section 131 (Horns)
- Section 132 (Power Distribution (Fuse Id) (Supplemental) - GX)
- Section 133 (Audio System (Hybrid))
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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.