DTC U0151 Mitshubishi

Description

The A C-ECU receives air conditioning operation-related signals from the SRS-ECU via the CAN bus lines. If any of the air conditioning control-related signals from the SRS-ECU cannot be received, the diagnostic trouble code U0151 is stored. Current trouble: Connector(s) or wiring harness in the CAN bus lines between the SRS-ECU and the A C-ECU, the power supply system to the SRS-ECU, the SRS-ECU itself, or the A C-ECU may be defective. Past trouble: If DTC U0151 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 SRS-ECU, and the power supply system to the SRS-ECU. 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.