CUSTOMER CONCERN The air conditioning does not cool and DTC B1474 indicates an A/C inverter malfunction. CAUSE High-voltage supply, DA1 connector condition, and the compressor's 12-volt power, ground, and control circuits checked good, confirming an internal electric A/C compressor failure. CORRECTION Remove and replace the failed electric A/C compressor, clear DTC B1474, and verify normal compressor communication and cooling operation.