Why does the Prius engine not shut off after parking?
1 Answers
Under fault conditions, the engine does not drive the MGI motor to generate electricity, which is due to the high-voltage battery (HV) not receiving a charge. Troubleshooting: Use a specialized tool to retract all the pins in the connector, reinstall the connector, and repeatedly test-drive to confirm that the fault is completely resolved. The reason the engine cannot shut off normally is that the power battery is not receiving a charge. Diagnostic Approach: For intermittent faults, poor circuit contact is one of the most common causes. When the engine shuts off, its mechanical vibrations can both trigger the fault and make it disappear, which is a characteristic manifestation of such faults. This indicates that poor circuit contact is the internal cause of the fault, while impact vibrations are the external cause. During the fault diagnosis process, artificially creating the external cause to reproduce the fault is an effective method for accurately locating such faults.