Standard Ignition SC378 Automatic Transmission Input Shaft Speed Sensor

Overview of Standard Ignition SC378 Transmission Sensor

The Standard Ignition SC378 is an automatic transmission input shaft speed sensor designed for select Ford, Lincoln, and Mercury vehicles. This sensor plays a critical role in monitoring vehicle speed and transmission performance, ensuring smooth operation for models like the Ford Fusion and Lincoln MKZ.

• Connector Gender: Male
• Connector Quantity: 1
• Connector Shape: Rectangular
• Connector Type: Plug in
• Contents: Vehicle speed sensor
• Terminal Gender: Male
• Terminal Quantity: 2
• Terminal Type: Blade

Detailed Product Description

The SC378 automatic transmission input shaft speed sensor from Standard Ignition features a single rectangular male plug-in connector with two male blade terminals. This configuration ensures a secure and reliable electrical connection within the transmission system. The sensor is engineered to accurately detect the input shaft speed, providing essential data to the vehicle’s transmission control module. Compatible with Ford Five Hundred, Fusion, Lincoln MKZ, Mercury Milan, Montego, and Zephyr models, this sensor supports proper transmission shifting and vehicle speed monitoring.

Common Applications and Issues Addressed

• Helps resolve erratic or delayed transmission shifting
• Prevents inaccurate vehicle speed readings
• Addresses transmission warning light activation related to speed sensor faults
• Reduces transmission slipping caused by faulty input shaft speed data
• Supports overall transmission system diagnostics and performance

Installation Notes and Tips

When installing the Standard Ignition SC378 sensor, ensure the vehicle is safely lifted and the transmission area is clean. Disconnect the battery before removal to avoid electrical shorts. Carefully unplug the existing sensor’s connector and remove mounting hardware. Install the new sensor by aligning the rectangular male plug and securing it firmly. Verify the two blade terminals are properly seated to maintain electrical continuity. After installation, clear any diagnostic trouble codes and test drive the vehicle to confirm proper transmission operation.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The SC378 sensor undergoes rigorous quality control testing to maintain consistent functionality. This part is backed by Standard Ignition’s limited warranty, providing coverage against defects in material and workmanship under normal use conditions.