True Tech Ignition RY-71T Powertrain Control Module Relay

The True Tech Ignition RY-71T is a powertrain control module (PCM) relay designed to provide reliable power management for your vehicle's engine control system. This relay controls the flow of electrical power to the PCM, ensuring the module only draws power when needed, protecting critical engine management components from electrical damage.

Key Features:

• Provides consistent, filtered power to the PCM for uninterrupted system operation
• Isolates sensitive electronics of the PCM from high-powered engine circuits, protecting vital components
• Shields the PCM from unexpected voltage swings, spikes, or short circuits
• High-quality construction designed to withstand harsh under-hood temperatures and vibration
• Direct-fit replacement for easy installation

The PCM relay is one of the most important relays as it provides power for the vehicle's computer system—without it, the entire engine management system will be disabled and the vehicle will not run. By delivering consistent power to the PCM, it supports everything from smooth starts to optimal fuel efficiency. This relay is essential for proper operation of fuel injection, ignition timing, emissions control, and transmission functions managed by the powertrain control module.