DTC U053B: Invalid Data Received from Image Processing Module A: Description

The IPMA is integrated into the interior rear view mirror.

The PSCM monitors the HS-CAN messages when the ignition has been on for more than 5 seconds, the voltage to the PSCM is greater than 10 volts and there are no DTCs present inhibiting PSCM operation.

The IPMA uses input from several sensors and components to gather vehicle data, then sends this data to the PSCM. If the data is corrupted or invalid, the IPMA sends out "invalid", "fault" or "unknown" instead of the actual sensor data. For a list of the messages sent to the PSCM from the IPMA, refer to the Network Message List in Description and Operation in the Power Steering article.

• DTC U053B:00 (Invalid Data Received from Image Processing Module A: No Sub Type Information) - This DTC sets if the PSCM receives an invalid or unknown message from the IPMA instead of valid lane information.