Standard Ignition SC121 Automatic Transmission Output Shaft Speed Sensor

Overview of Standard Ignition SC121 Transmission Sensor

The Standard Ignition SC121 is an automatic transmission output shaft speed sensor designed specifically for Jeep Cherokee models. This sensor plays a critical role in monitoring transmission speed to ensure smooth shifting and optimal vehicle performance.

• Connector Gender: Female
• Connector Quantity: 1
• Connector Shape: Oval
• Connector Type: Plug in
• Mounting Location: Transmission mount
• Terminal Gender: Male
• Terminal Quantity: 2
• Terminal Type: Blade

Detailed Product Description

The Standard Ignition SC121 automatic transmission output shaft speed sensor is engineered to provide accurate speed readings from the transmission output shaft. Featuring a female oval plug-in connector with a single connection point, it ensures a secure and reliable electrical interface. The sensor mounts directly on the transmission housing, allowing precise measurement of shaft speed. It includes two male blade terminals that facilitate efficient electrical contact and signal transmission. This sensor is compatible with Jeep Cherokee vehicles, making it a suitable replacement part for maintaining transmission system integrity.

Common Applications and Issues Addressed

• Helps resolve erratic or delayed transmission shifting
• Prevents transmission slipping caused by inaccurate speed data
• Eliminates transmission warning lights related to output shaft speed sensor faults
• Improves overall transmission performance and drivability
• Supports proper operation of the vehicle’s speedometer and cruise control systems

Installation Notes and Tips

• Ensure the vehicle is safely lifted and supported before accessing the transmission mount
• Disconnect the battery to prevent electrical shorts during installation
• Carefully unplug the female oval connector from the old sensor
• Install the SC121 sensor securely at the transmission mount location
• Verify the two male blade terminals are properly seated in the connector
• After installation, clear any transmission-related error codes and test drive to confirm proper function

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The SC121 sensor undergoes rigorous quality control testing to maintain consistent standards. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship for this transmission output shaft speed sensor.