SFI SYSTEM (w/o EGR System), Diagnostic DTC:U0293
| DTC Code | DTC Name |
|---|---|
| U0293 | Lost Communication with HV ECU |
DESCRIPTION
The Controller Area Network (CAN) is a serial data communication system for real-time application. It is a multiplex communication system designed for on-vehicle use that provides a superior communication speed of 500 kbps and a capability to detect malfunctions. Through the combination of the CANH and CANL bus lines, the CAN is able to maintain communication based on differential voltage.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0293 | Communication with power management control ECU is interrupted (1 trip detection logic) |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
Refer to the CAN Communication System Click here.
Tech Tips
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.