DTC P1757 Infiniti

Description

The A C-ECU receives air conditioning operation-related signals from the audio via the CAN bus lines. If any of the air conditioning control-related signals from the audio cannot be received, the diagnostic trouble code U0184 is stored. Current trouble: Connector(s) or wiring harness in the CAN bus lines between the Audio and the A C-ECU, the power supply system to the Audio, the Audio itself, or the A C-ECU may be defective. Past trouble: If DTC U0184 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the CAN bus line between the A C-ECU and the Audio, and the power supply system to the Audio. If the connectors and wiring are normal, and obviously the ECU is the cause of the trouble, replace the ECU. If in doubt, do not replace the ECU.