General Information

HEV Motor System
U1004 Lost Communication with Hybrid Powertrain Control Module (H-CAN) - General Information

Component Location





General Description

Several control units are applied to electronically controlled vehicles. These units perform each control with informations from various sensors. Thus, sharing signal information from sensors is needed, so CAN communication type whose communication speed is high and insensitive to electrical noise by spark generation is adopted to controlling power-train & Chassis & HEV.

DTC Description

The MCU sets DTC U1004 if No message during 2s has not been received through the H-CAN signal.

DTC Detecting Condition





Diagnostic Circuit Diagram










Signal Waveform & Data