HYBRID CONTROL SYSTEM, Diagnostic DTC:P0C3A-621, P0C3B-622, P0C3F-623, P0C40-624
| DTC Code | DTC Name |
|---|---|
| P0C3A-621 | DC / DC Converter Temperature Sensor "A" Low |
| P0C3B-622 | DC / DC Converter Temperature Sensor "A" High |
| P0C3F-623 | DC / DC Converter Temperature Sensor "B" Low |
| P0C40-624 | DC / DC Converter Temperature Sensor "B" High |
DESCRIPTION
The MG ECU detects the temperature of the boost converter using the temperature sensor built into the boost converter. The boost converter using the temperature sensor outputs voltage which changes between 0.5 and 4.5 V in response to a change in temperature. The higher the boost converter temperature, the lower the output voltage. Conversely, the lower the boost converter temperature, the higher the output voltage. The MG ECU limits load based on signals sent from the boost converter temperature sensor to help prevent overheating. The MG ECU also detects malfunctions in the boost converter temperature sensor and its wiring.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0C3A-621 | Open or short to GND in the boost converter temperature sensor (upper) signal circuit (1 trip detection logic) |
Inverter with converter assembly |
| P0C3B-622 | Short to +B in the boost converter temperature sensor (upper) signal circuit (1 trip detection logic) |
Inverter with converter assembly |
| P0C3F-623 | Open or short to GND in the boost converter temperature sensor (lower) signal circuit (1 trip detection logic) |
Inverter with converter assembly |
| P0C40-624 | Short to +B in the boost converter temperature sensor (lower) signal circuit (1 trip detection logic) |
Inverter with converter assembly |
| DTC No. | Data List |
|---|---|
| P0C3A-621 | DC/DC Cnv Temp (Upper) |
| P0C3B-622 | |
| P0C3F-623 | DC/DC Cnv Temp (Lower) |
| P0C40-624 |
CAUTION / NOTICE / HINT
Tech Tips
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
-
Turn the power switch on (IG) and wait for 5 seconds or more.
