Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
No Communication Between the Integrated Diagnostic System (IDS) and the Vehicle
2021 Ford Edge SE, 4WDSECTION No Communication Between the Integrated Diagnostic System (IDS) and the Vehicle
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
For information on Ford Color Coded Illustrations refer to OEM COLOR CODING .
Configuration
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WARNING: Before beginning any service procedure, REFER to Safety Warnings in General Information. Failure to follow this instruction may result in serious personal injury.
Refer to: Health and Safety Precautions .
- Establish a scan tool session.
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NOTE: For vehicles with push-button start, refer to Push Button Ignition Switch in Steering Column Switches .
Turn ignition to RUN.
- The scan tool first attempts to communicate with the PCM. After establishing communication with the PCM, the scan tool then attempts to communicate with all other modules on the vehicle.
- If an IDS session cannot be established with the vehicle, IDS may state "No communication can be established with the Powertrain Control Module (PCM)."
- Choose "NO" when the scan tool prompts whether or not to retry communication.
- Enter a PCM part number, tear tag or calibration number to identify the vehicle and start a session. The PCM part number and 4-character tear tag number are printed on the PCM label. If the PCM part number or tear tag number cannot be found, double-click on the VIN in the upper LH corner of the PTS screen. The tear tag number is listed on the Detailed Vehicle Specification.
- If the scan tool cannot communicate with the vehicle after manually entering the PCM part number, diagnose the PCM does not respond to the scan tool. Refer to: Communications Network .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.