Diagnostic procedure

There is communication on the VR-bus as long as there is +54 current. This DTC is generated if response is missing from the relay in question.

The cause of the problem could be power supply, grounding or that bus connection is missing.

• Try moving the relay to the position for the left rear window.
• Activate the relay with the button for left front window on the center console.
• Left rear window should raise or lower.
• If the left rear window raises or lowers, the problem is most likely in the wiring harness