HYBRID CONTROL SYSTEM, Diagnostic DTC:P3222-313, P3223-312
| DTC Code | DTC Name |
|---|---|
| P3222-313 | Generator Inverter Temperature Sensor Circuit High / Low |
| P3223-312 | Generator Inverter Temperature Sensor Circuit High |
DESCRIPTION
The MG ECU located in the inverter with converter assembly detects the temperature of the generator inverter using the temperature sensor built into the inverter with converter assembly. The inverter cooling system is the same as that for MG2 and MG1, and it 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. (For details, Click here.) The MG ECU uses signals from the generator inverter temperature sensor to check the effectiveness of the inverter cooling system. If necessary, the MG ECU will limit inverter output to help prevent inverter overheating. The ECU also detects malfunctions in the generator inverter temperature sensor and its wiring.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P3222 | 313 | Open or short to GND in the generator inverter temperature sensor signal circuit | Inverter with converter assembly |
| P3223 | 312 | Short to +B in the generator inverter temperature sensor signal circuit |
PROCEDURE
-
REPLACE INVERTER WITH CONVERTER ASSEMBLY
-
Replace the inverter with converter assembly (See page for LHD, Click here for RHD).
NEXT 
COMPLETED
-