Component Location
General Description
There is no hardware difference of the HECU according to the vehicle's specification, just software is changed by the vehicle parameter used for ESP control. The HECU stores a classified variant code value according to the received data(a kind of engine, engine displacement, a kind of T/M). After then the HECU reads various parameters according to the stored variant value in the memory to use for the ESP control.
DTC Description
The HECU checks the varient code after ignition. If a inappropriate varient code is detected or there is no varient code, a fault is detected.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | Internal monitoring
| Replacement of PCM(ECM & TCM)
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Monitoring Period | Once during startup.
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Enable Conditions | After power on, the HECU does not receive a valid variant code information during the configuration time. HECU has no valid variant code stored in the EEPROM. The receieved CAN signals does not lead to a defined and supported variant code. If an ECU, which has already memorized a valid variant code information, receives a different variant code information. (at a next Power on cycle)
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Fail-Safe | The ABS/EBD/ESP functions are inhibited. The ABS/EBD/ESP warning lamps are activated.
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