Trouble Judgment
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
The heater controller assembly (A/C-ECU) receives air conditioning operation-related signal from the ETACS-ECU via the CAN bus lines. If the heater controller assembly (A/C-ECU) can not receive the air conditioning operation-related signal at all on the ETACS-ECU, diagnostic trouble code No. U0141 will be stored.