Dorman 601-620 Smart Data Link Module Instruction Manual

1. Product Overview

The Dorman 601-620 Smart Data Link Module is a direct replacement part designed to match the fit, function, and performance of the factory module on specified Ford and Lincoln vehicles. This module, also known as a gateway module, is crucial for ensuring communication between the Controller Area Network (CAN) bus and various devices and tools that utilize the onboard diagnostic (OBD-II) port.

It is situated under the dashboard, typically below the steering column, and plays a vital role in maintaining proper vehicle engine and electronic functions. A malfunctioning data link module can lead to communication breakdowns, resulting in disabled vehicle convenience features or the activation of engine limp mode.

1.1. Package Contents

• 1 OBD II Data Link Module

1.2. Product Views

This image displays the Dorman 601-620 module from a top-down perspective, highlighting its overall shape and the primary connector interface.

This image provides a side profile of the module, illustrating its depth and the design of its mounting tabs.

This image shows the underside of the module, prominently featuring the OBD-II diagnostic port where scan tools connect.

This image provides a view of the module's top surface, indicating where internal connections are made.

2. Installation and Setup

The Dorman 601-620 Smart Data Link Module is designed as a direct replacement for the original equipment module. Professional installation is recommended due to the critical nature of this component within the vehicle's electronic system.

2.1. Pre-Installation Check

Before installation, it is crucial to confirm that this part is compatible with your specific vehicle. Refer to the vehicle fitment information provided by Dorman or use a vehicle compatibility tool by inputting your vehicle's make, model, and trim level.

• Verify vehicle compatibility using the manufacturer's fitment guide.
• Ensure the vehicle's battery is disconnected before beginning any electrical work.
• Locate the existing data link module, typically found under the dashboard below the steering column.

2.2. Installation Steps (General Guidance)

1. Disconnect Battery: Always disconnect the vehicle's negative battery terminal before working on electrical components to prevent accidental short circuits or damage.
2. Access Module: Carefully remove any trim panels or components necessary to gain access to the existing data link module.
3. Disconnect Old Module: Unplug all electrical connectors from the old data link module. Note the orientation and connection points for reassembly.
4. Remove Old Module: Unfasten any mounting screws or clips securing the old module and remove it from its position.
5. Install New Module: Position the Dorman 601-620 module in the same location. Secure it using the original mounting hardware.
6. Connect New Module: Reconnect all electrical connectors to the new module, ensuring they are fully seated and locked.
7. Reassemble: Reinstall any removed trim panels or components.
8. Reconnect Battery: Reconnect the vehicle's negative battery terminal.
9. System Check: After installation, perform a system check to ensure all vehicle functions are restored and no diagnostic trouble codes (DTCs) are present. This may require a diagnostic scan tool.

Note: Specific installation procedures may vary by vehicle model. Consult your vehicle's service manual for detailed instructions.

3. Operation

The Dorman 601-620 Smart Data Link Module operates automatically within the vehicle's electronic system. It functions as a gateway, facilitating communication between the Controller Area Network (CAN) bus and external diagnostic tools or other vehicle modules connected via the OBD-II port.

Once correctly installed, the module ensures that data flows seamlessly, allowing various vehicle systems to communicate effectively. This includes critical engine and electronic functions. There are no user-operable controls on the module itself; its operation is entirely integrated with the vehicle's onboard computer systems.

4. Maintenance

The Dorman 601-620 Smart Data Link Module is a sealed electronic component designed for long-term, reliable service without requiring routine user maintenance. It is built with durable construction and tested to strict specifications.

To ensure its longevity, avoid exposing the module to excessive moisture, extreme temperatures, or physical impact. If the module becomes dirty, gently wipe it with a dry, clean cloth. Do not use harsh chemicals or abrasive cleaners.

5. Troubleshooting

The primary indication of a faulty data link module is a breakdown in communication between various vehicle systems. This can manifest in several ways:

• Disabled Vehicle Convenience Features: Functions such as power windows, central locking, or infotainment systems may stop working.
• Engine Limp Mode Activation: The vehicle's engine may enter a reduced power mode to prevent further damage.
• Inability to Connect Diagnostic Tools: OBD-II scan tools may fail to establish communication with the vehicle's onboard computer.
• Multiple Warning Lights: Various dashboard warning lights may illuminate due to communication errors.

5.1. Diagnostic Steps

1. Check Connections: Ensure all electrical connectors to the data link module are securely attached and free from corrosion.
2. Inspect Wiring: Visually inspect the wiring harness connected to the module for any signs of damage, fraying, or pin corrosion.
3. Scan for Codes: Use an OBD-II scan tool to retrieve any diagnostic trouble codes (DTCs) stored in the vehicle's computer. Codes related to CAN bus communication or module failure can indicate a problem with the data link module.
4. Professional Diagnosis: If communication issues persist, it is recommended to seek diagnosis from a qualified automotive technician. They have specialized tools and expertise to accurately pinpoint the cause of communication failures.

If the module is determined to be faulty due to electrical malfunction or data corruption, replacement with a new Dorman 601-620 module is the recommended solution.

6. Specifications

7. Warranty and Support

Dorman products are backed by a team of product experts in the United States and more than a century of automotive experience, ensuring trustworthy quality.

For specific warranty information regarding the Dorman 601-620 Smart Data Link Module, please refer to the warranty documentation included with your purchase or contact Dorman Products directly through their official website or customer service channels. Warranty terms and conditions may vary.

For technical support or further assistance, please visit the official Dorman website or contact their customer service department. Contact information can typically be found on the product packaging or the manufacturer's website.