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ABS 30260 Wheel Speed Sensor
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ABS 30260 Wheel Speed Sensor – Overview
The ABS 30260 Wheel Speed Sensor is a critical component in modern vehicle safety systems. It monitors the rotational speed of each wheel and transmits this data to the Anti‑Lock Braking System (ABS) controller, enabling precise brake modulation during emergency stops.
Key Functions
- Wheel Speed Detection: Measures revolutions per minute (RPM) for individual wheels.
- Signal Generation: Produces a high‑frequency pulse train proportional to wheel speed.
- Data Transmission: Sends signals via a dedicated wiring harness to the ABS module.
- Fault Detection: Provides diagnostic information for malfunctioning wheels.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | 30260 |
| Sensor Type | Hall‑Effect / Inductive (depending on variant) |
| Operating Temperature Range | -40 °C to +125 °C |
| Voltage Supply | 12 V DC |
| Signal Output | Square wave, 5–20 kHz |
| Mounting Orientation | Front/Rear, Left/Right (as specified) |
| Compatibility | Designed for Volvo S40 II (model year 2004‑2010) and similar platforms. |
| Dimensions | Approx. 30 mm × 20 mm × 15 mm |
| Weight | ~50 g |
| Connector Type | Standard automotive plug (4‑pin) |
Installation Guide
The ABS 30260 sensor is typically installed on the wheel hub assembly. Follow these steps for a proper fit:
- Safety First: Disconnect the vehicle’s battery to prevent electrical shock.
- Remove Existing Sensor: Unscrew the old sensor using a suitable socket set; note the orientation of the mounting bracket.
- Prepare the New Sensor: Align the sensor’s magnetic pole with the wheel hub’s toothed rim. Ensure no debris interferes with contact.
- Screw in Place: Tighten the mounting bolt to the manufacturer’s torque specification (typically 25 Nm).
- Connect Wiring: Attach the sensor connector to the vehicle’s harness, matching pinouts exactly.
- Re‑check Alignment: Verify that the sensor is centered and not tilted; misalignment can cause false readings.
- Reconnect Battery: Restore power and perform a diagnostic check using an OBD‑II scanner to confirm proper operation.
Benefits of Using ABS 30260
- Enhanced Safety: Accurate wheel speed data reduces the risk of wheel lockup during braking.
- Reliability: Robust construction withstands harsh automotive environments.
- Ease of Replacement: Standardized mounting and connector simplify maintenance.
- Diagnostic Support: Built‑in fault detection aids quick troubleshooting.
Troubleshooting Common Issues
| Symptom | Possible Cause | Solution |
|---|---|---|
| ABS warning light illuminated | Sensor misalignment or damaged wiring | Inspect mounting, clean contacts, and check connector integrity. |
| Erratic brake modulation during hard stops | Inconsistent pulse frequency from sensor | Verify sensor orientation; replace if signal is unstable. |
| No data on diagnostic scan tool | Sensor not receiving power or disconnected | Check battery connection, wiring harness, and fuse status. |
Maintenance Tips
- Regular Inspection: Periodically check the sensor for corrosion or physical damage.
- Clean Contact Surfaces: Use a soft brush to remove dirt from the magnetic pole and wheel rim teeth.
- Secure Wiring: Ensure that harnesses are not pinched or exposed to excessive flexing.
- Update Firmware: If the vehicle’s ABS controller supports updates, keep firmware current for optimal compatibility.
Compatibility Summary
The ABS 30260 is engineered specifically for vehicles with a Volvo S40 II chassis (model years 2004‑2010). It fits both front and rear wheel positions, left and right sides, as indicated by the manufacturer’s part number. For other vehicle platforms, consult the OEM specifications before installation.
Frequently Asked Questions
- What does the sensor do during normal driving?
- The sensor continuously monitors wheel speed and sends real‑time data to the ABS controller, which uses it to adjust brake pressure automatically.
- Can I use a generic sensor instead of the ABS 30260?
- Generic sensors may not match the precise electrical characteristics or mounting geometry required by the vehicle’s ABS system, potentially leading to malfunction.
- How long does the sensor last under normal conditions?
- With proper maintenance, a well‑installed ABS 30260 can operate reliably for many years, often exceeding the typical lifespan of other brake components.
- Is professional installation recommended?
- While the sensor is designed for straightforward replacement, ensuring correct alignment and wiring is critical; if unsure, seek assistance from a qualified technician.
Conclusion
The ABS 30260 Wheel Speed Sensor plays an indispensable role in maintaining vehicle stability and preventing wheel lockup during braking. Its precise design, durable construction, and compatibility with Volvo S40 II models make it a reliable choice for both OEM replacements and aftermarket upgrades. By following proper installation procedures and routine maintenance practices, drivers can trust that their ABS system will continue to perform at peak safety levels throughout the vehicle’s life.
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 26.99 EUR  32.98 EUR |
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| Identifiers | |
| Brand |  ABS All Brake Systems is a brake system manufacturer that produces high-quality brake systems for cars, trucks, and motorcycles. The company is known for its innovative products, excellent customer service, and competitive prices. |
| Model | ABS All Brake Systems 30260 |
| MPN | ABS All Brake Systems 30260 |
| ID | 7008618 |
| Dimensions / Weight | |
| Key Features | |
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