How to Diagnose Toyota Hilux Revo ABS Warning Light Issue Without a Scanner | Auto Tech 786

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If the ABS warning light on your Toyota Hilux Revo has come on and you don't have access to a scanner, there are a few steps you can take to diagnose the issue manually:

1. **Check Brake Fluid Level**: Low brake fluid can trigger the ABS light. Open the hood and check the brake fluid reservoir. If the fluid is below the minimum level, refill it and check for any leaks.

2. **Inspect ABS Sensors**: ABS sensors are located at each wheel. Dirt, debris, or damage to the sensors can cause the light to come on. Visually inspect the sensors and wiring for any obvious damage or signs of wear.

3. **Check the ABS Fuse**: A blown fuse can disable the ABS system. Locate the ABS fuse in the fuse box and check if it's blown. Replace it if necessary.

4. **Test the Wheel Speed Sensors**: Spin each wheel by hand and listen for any unusual sounds. A faulty wheel speed sensor could cause the ABS light to turn on. If one wheel makes a different noise or resistance than the others, the sensor might be faulty.

5. **Drive the Vehicle**: After checking these components, take the vehicle for a short drive. If the ABS light turns off after a few minutes, it could have been a minor issue that’s now resolved.

If the light remains on, it’s recommended to get the ABS system scanned with a diagnostic tool for an accurate diagnosis.

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