Scantool Diagnostics

HEV Motor System
P0A3E Generator Inverter Over Temperature - Scantool Diagnostics

Monitor DTC Status

1. Ignition ON (SSB LED "BLUE") & Vehicle "STOP".
2. Connect GDS and select "DTC Analysis" mode.
3. Click "DTC Status" on the menu bar to view DTC information.
4. Confirm that the "DTC Readiness Flag" indicates "COMPLETED". If not, drive the vehicle within conditions noted in Freeze Frame Data or Enable Conditions.
5. Read the "DTC Status" parameter.




6. Is parameter displayed "Present fault"?






Monitor Scantool Data

1. Ignition ON/Hybrid Ready (Cluster Indicator "READY" On) Vehicle Parked.
2. Connect GDS and select "Data Analysis" mode.
3. Selet "Currnet Data"mode and monitor "MCU(GCU) temperature" parameter.

Specification :- 22 - 302°F(-30 - 150°C)








Fig.1) Parameter of "MCU(GCU) Temperature" will be fixed at 417°F, if there is any fault in Motor Temperature.
Fig.2-1) Check Number of Generator(HSG) operation, and Generator(HSG) temperature changes as time goes by.
Fig.2-2) Check EWP is operating correctly.
4. If the current temperature is abnormal, check below items.
> Check the MCU cooling system because MCU cooling system failure gives influence to HSG temperature changes.
> Check the temperature changes between MCU and LDC are similar
> Check the temperature changes between MCU and GCU and HSG and LDC are similar.
> Check Number of Generator(HSG) operation, and Generator(HSG) temperature changes as time goes by.
> Substitute with a known-good MCU(HPCU) and check for proper operation. If the problem is corrected,replace MCU(HPCU) and then go to "Verification of Vehicle Repair" procedure.
> After Component replacement Motor/HSG Resolver Calibration must be performed using the GDS.