U0294

DTC U0294 Lost Communication with Data Recording Module

Circuit Description

The ECM and the data recording module (DRM) communicate control and diagnostic information via a controller area network (CAN) communication bus. The ECM monitors CAN operational status by expecting a constant flow of messages from the DRM. If the ECM fails to receive an expected message from the DRM this DTC will set.

Condition for Running the DTC

^ DTC U0073 is not set.
^ The battery voltage is between 10 to 16 volts.
^ The ignition switch is ON.

Condition for Setting the DTC

^ The ECM detects that the CAN Bus messages from the DRM are not being received.

Action Taken When the DTC Sets

^ The ECM will not illuminate the MIL or SVS lamp. Refer to DTC Type Definitions for Action Taken When the DTC Sets - Type D.

Condition for Clearing the DTC

^ Refer to DTC Type Definitions for Condition for Clearing the DTC - Type D.

Diagnostic Aids

^ If an intermittent condition is suspected refer to Intermittent Conditions in this section.

Circuit/System Testing DTC U0294