Standard Ignition ALS1139 ABS Wheel Speed Sensor - Rear Right

Reliable ABS Wheel Speed Sensor for Mazda Protege

The Standard Ignition ALS1139 ABS wheel speed sensor is designed specifically for Mazda Protege models, providing accurate wheel speed data essential for your vehicle's anti-lock braking system. This sensor ensures consistent performance and helps maintain vehicle safety by monitoring wheel rotation.

Key Features of Standard Ignition ALS1139 ABS Sensor

• Terminal Quantity: 2 terminals for secure electrical connection
• Connector Gender: Male connector for proper fitment
• Terminal Gender: Female terminals for reliable contact
• Connector Quantity: Single connector design
• Connector Shape: Rectangular for easy installation
• Harness Length: 33.5 inches (850 mm) to accommodate wheel mounting
• Mounting Location: Wheel-mounted sensor with 2 bolt holes
• Terminal Type: Blade terminals for durability
• Hardware Included: No, allowing use of existing mounting bolts

Detailed Description of the ALS1139 ABS Wheel Speed Sensor

The Standard Ignition ALS1139 is engineered to meet the specifications required for the Mazda Protege's ABS system. Featuring a rectangular male connector and female blade terminals, this sensor provides a secure and stable electrical connection. The 33.5-inch harness length offers flexibility for installation at the wheel mounting location, secured by two bolt holes. This sensor does not include hardware, so existing bolts can be reused during replacement. The design ensures accurate wheel speed data transmission to the vehicle’s ABS control module, supporting effective braking performance and vehicle stability.

Common Issues Addressed by the ALS1139 Sensor

• Intermittent or no ABS warning light due to faulty sensor signals
• Erratic ABS system behavior or failure to engage properly
• Inaccurate wheel speed readings causing traction control issues
• ABS system disabling due to sensor circuit faults
• Reduced braking efficiency linked to sensor malfunction

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before sensor replacement
• Disconnect the battery to prevent electrical shorts during installation
• Carefully remove the old sensor and clean the mounting area
• Verify the connector orientation matches the male rectangular design
• Use existing mounting bolts to secure the sensor firmly in place
• Check the harness length to avoid tension or interference with wheel components

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM standards for fit, form, and function. The ALS1139 ABS wheel speed sensor undergoes rigorous testing to ensure reliable performance in Mazda Protege vehicles. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship to provide confidence in your replacement part.