DTC    P0C3A-621    DC / DC Converter Temperature Sensor "A" Low

DTC    P0C3B-622    DC / DC Converter Temperature Sensor "A" High

DTC    P0C3F-623    DC / DC Converter Temperature Sensor "B" Low

DTC    P0C40-624    DC / DC Converter Temperature Sensor "B" High

for Preparation Click here


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.

A178019E01


DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0C3A
621
Open or short to GND in the boost converter temperature sensor (upper) signal circuit
Inverter with converter assembly
P0C3B
622
Short to +B in the boost converter temperature sensor (upper) signal circuit
P0C3F
623
Open or short to GND in the boost converter temperature sensor (lower) signal circuit
P0C40
624
Short to +B in the boost converter temperature sensor (lower) signal circuit

INSPECTION PROCEDURE

1.REPLACE INVERTER WITH CONVERTER ASSEMBLY

  1. Replace the inverter with converter assembly (Click here).


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COMPLETED