General Information

Traction Control System
C1604 ECU Hardware Error - General Information

Component Location





General Description

The HECU is composed of a ECU (Electronic Control Unit ) and a HCU( Hydraulic Control Unit) , so the HECU hardware includes all solenoid valves inside the unit as well as the ECU.

DTC Description

This trouble code is set when the solenoid valves or operating circuit are malfunctioning as well as the trouble of HECU.The HECU moitors the operation of the valves by checking the drive circuit of the solenoid valves,and then sets this code when the unexpcted drain voltage is detected, and also sets this code when the HECU module itself is out of order. For example, when the EEPROM data read by master processor is different from the data sent before, or when the master/slave processor detects abnormal operation in RAM, Status Register, Interrupt ,Timer, A/D converter, cycle time,the HECU sets this code.

DTC Detecting Condition





Schematic Diagram





Full Circuit