B1477

AIR CONDITIONING SYSTEM: B1477: A/C Inverter Low Voltage Power Resource System Malfunction

DTC B1477 - A/C Inverter Low Voltage Power Resource System Malfunction

CAUTION / NOTICE / HINT

DESCRIPTION

The A/C inverter monitors the controlling power voltage in the self circuit. It stops compressor circuit and outputs the DTC when the monitored voltage is outside the specified range.
The output DTC is memorized as previous trouble. The compressor control may not resume unless the power switch is turned OFF.





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.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DIAGNOSTIC TROUBLE CODE
(a) Check if DTCs for the hybrid control system are output using Techstream.
OK:
DTCs are not output in the hybrid control system.
NG -- GO TO HYBRID CONTROL SYSTEM
OK -- REPLACE A/C INVERTER