SIWONL Steering Angle Sensor User Manual

SIWONL Steering Angle Sensor

Overview

The SIWONL Angle Sensor provides real-time monitoring of steering wheel (or related components) rotation angle and direction, and precisely transmits angle signals to the vehicle ECU to support stable handling and driving safety.

Specifications

Quick Setup

1. Before installation or removal, turn off the ignition switch and disconnect the negative battery terminal.
2. Confirm the sensor model is compatible with the vehicle.
3. Align the sensor with the installation position, then gently push or screw it in until it is securely installed.
4. Connect the wiring harness interface and ensure the connector is locked in place.
5. Reconnect the battery, start the vehicle, and check that the system works properly (e.g., no fault lights on the instrument panel).

Warnings
1. Before installation or removal, be sure to turn off the ignition switch and disconnect the negative battery terminal to prevent short circuits or electric shock.
2. Do not perform any debugging or plug/unplug operations while the vehicle is in motion.
3. Do not strike, drop, or disassemble the sensor to avoid damaging internal precision components.
4. Keep the sensor away from high temperatures, open flames, or corrosive liquids.

 Product Name
Angle Sensor

Brand
SIWONL

Instructions for Use

1. Confirm that the sensor model is compatible with the vehicle before installation.
2. Align the sensor with the installation position and gently push or screw it in to ensure it is securely installed.
3. Connect the wiring harness interface and ensure the connector is locked in place to avoid looseness.
4. After installation, reconnect the battery, start the vehicle, and check whether the system is working properly (e.g., whether any fault lights illuminate on the instrument panel).

Precautions

1. Do not use excessive force during installation to avoid damaging the internal structure of the sensor.
2. Ensure the sensor installation position is clean, dry, and free of oil stains or metal debris.
3. Route the wiring harness away from high temperatures, sharp edges, or moving parts to prevent wear or short circuits.
4. Do not modify the sensor wiring or use non-original matching harnesses without authorization.

Function Overview

1. Real-time monitoring of the steering wheel or related components’ rotation angle and direction.
2. Precisely transmits angle signals to the vehicle’s Electronic Control Unit (ECU).
3. Supports normal operation of functions such as the Electronic Stability Program (ESP) and Electric Power Steering (EPS).
4. Enhances vehicle handling stability and driving safety.

Troubleshooting

1. Fault light illuminates: Check whether the sensor wiring connection is loose or oxidized; re-plug or clean the interface if necessary.
2. Abnormal steering assist: Check whether the sensor installation position is misaligned or if it has been impacted by external force.
3. No signal output: Use a diagnostic tool to read the data stream to confirm whether the sensor is damaged; replace if necessary.
4. Inaccurate readings: Check whether the sensor requires zero-point calibration (refer to the vehicle model’s service manual).

After-Sales Service

1. Six-month warranty service from the date of purchase (free repair or replacement for non-artificial damage).
2. The following situations are not covered by the warranty:
   • Damage caused by improper installation, unauthorized disassembly, or external impact;
   • Failures resulting from water ingress, short circuits, or wiring modifications;
   • Damage caused by failure to operate in accordance with this manual.
3. Please retain your purchase receipt to enjoy after-sales services.