P3222
DTC P3222-313 Generator Inverter Temperature Sensor Circuit High / LowDTC P3223-312 Generator Inverter Temperature Sensor Circuit High
DESCRIPTION
DTC Detection Condition:
The MG ECU located in the w/ converter inverter assembly uses the temperature sensor that is built into the w/ converter inverter assembly to detect the generator inverter temperature. The inverter cooling system is the same as that for the Motor or Generator, and operates independently of the engine cooling system. The characteristics of the generator inverter temperature sensor are the same as those of the boost converter temperature sensor. The MG ECU limits the load based on signals sent from the generator inverter temperature sensor in order to check the effect of the inverter cooling system and prevent over heating. Furthermore, the ECU detects malfunctions in the wiring of the generator inverter temperature sensor, as well as in the sensor.
Step 1:
Step 1(continued):
INSPECTION PROCEDURE
CAUTION:
- Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.
HINT: At least 5 minutes is required to discharge the high-voltage capacitor inside the w/ converter inverter assembly.