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 MANUALSACURA20043.5RLREPAIR AND DIAGNOSISELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORSENDING UNITS & SENSORS
2004 Acura 3.5RL
Sending Units & Sensors
2004 Acura 3.5RLSECTION Sending Units & Sensors
SENDING UNITS & SENSORS LOCATION
| Component | Location |
|---|---|
| Brake Light Failure Sensor | Left rear corner of trunk. See Figure . |
| Driver's Side Impact Sensor | Below left front doorsill trim. See Figure . |
| Engine Coolant Temperature (ECT) Sending Unit | On top right front of engine, on right side of water passage. See Figure . |
| Engine Coolant Temperature (ECT) Sensor | On top left front of engine, on left side of water passage. See Figure . |
| Evaporator Temperature Sensor | Behind glove box, in plenum. See Figure . |
| Exhaust Gas Recirculation (EGR) Valve Position Sensor | On top right rear of engine. See Figure . |
| Front Passenger's Side Impact Sensor | Below right front doorsill trim. See Figure . |
| Front Wheel Sensor | On left front knuckle spindle. See Figure . |
| Fuel Tank Pressure Sensor | Under left rear of vehicle. See Figure . |
| Heated Oxygen Sensor (Left Primary HO2S) | On left exhaust manifold. See Figure . |
| Heated Oxygen Sensor (Right Primary HO2S) | On right exhaust manifold. See Figure . |
| Heated Oxygen Sensor (Secondary HO2S) | On underside of vehicle, in exhaust system, rear of TWC converter. See Figure . |
| Intake Air Temperature (IAT) Sensor | On center rear of engine, in the intake manifold. See Figure . |
| Left Brakelight Failure Sensor | At left rear corner of trunk. See Figure . |
| Left Primary Heated Oxygen Sensor (Left Primary HO2S) | Left rear of engine compartment. See Figure . |
| Manifold Absolute Pressure (MAP) Sensor | On top right side of engine, on intake manifold. See Figure . |
| Outside Air Temperature Sensor | Behind front grille. See Figure . |
| Radiator Fan Control Sensor | On lower right side of radiator. See Figure . |
| Rear Wheel Sensor | On left rear knuckle spindle. See Figure . |
| Right Brakelight Failure Sensor | At right rear corner of trunk. See Figure . |
| Right Primary Heated Oxygen Sensor (Right Primary HO2S) | Right rear of engine compartment. See Figure . |
| Secondary Heater Oxygen Sensor (Secondary HO2S) | On side of catalytic converter. See Figure . |
| Side Inpact Sensor | Below left front side trim. See Figure . |
| Slide Position Sensor | Underside of driver's seat. See Figure . |
| Steering Angle Sensor | On steering column, under the combination switch. See Figure . |
| Steering Column Extend/Retract Position Sensor | On underside of steering column. See Figure . |
| TCS/VSA Control Valve Angle Sensor | Center front of engine. See Figure . |
| Throttle Position (TP) Sensor | On top of engine, on throttle body. See Figure . |
| Vehicle Speed Sensor (VSS) | On lower right front of engine. See Figure . |
| VSA Control Valve Angle Sensor | At front of engine. See Figure . |
| VSA Hydraulic Pressure Sensor | At right rear of engine compartment. See Figure . |
| Yaw Rate/Lateral Acceleration Sensor | Behind left side of rear seat. See Figure . |
RENDER: 1.0x
NO RELATED
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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.