B1475

DTC B1475 A/C Inverter Cooling / Heating System Malfunction

DESCRIPTION

Detection Condition:

The A/C inverter in the A/C inverter monitors the cooling water temperature with the temperature sensor. It stops compressor control and outputs the DTC when the monitored temperature is outside specified range (too high or too low).

The hybrid system and the air conditioning system monitor the cooling water temperature separately. If DTCs referring to an inverter cooling system malfunction are output simultaneously, there may be trouble such as insufficient cooling water.

If DTCs are output only for the air conditioning system, there may be an open or short in the temperature sensor circuit in the inverter.

NOTE: The A/C inverter is integrated with the inverter with converter. It is necessary to replace the PCU box if the A/C inverter (inverter with converter) needs to be replaced because the A/C inverter (inverter with converter) cannot be replaced alone.

Step 1-2:

INSPECTION PROCEDURE