СИСТЕМА УПРАВЛЕНИЯ ГИБРИДНОЙ СИСТЕМОЙ, 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.

A01FR2QE01
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
Related Data List
DTC No. Data List
P0C3A-621 DC/DC Cnv Temp (Upper)
P0C3B-622
P0C3F-623 DC/DC Cnv Temp (Lower)
P0C40-624

INSPECTION PROCEDURE

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (IG) and wait for 5 seconds or more.

PROCEDURE


  1. REPLACE INVERTER WITH CONVERTER ASSEMBLY

    Click here


    NEXT

    COMPLETED