Air Conditioning System

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: U0100, U0142, U0155: Lost Communication with ECM
U0155 - Lost Communication with Combination Meter

DESCRIPTION

The air conditioning amplifier communicates with the ECM, main body ECU (multiplex network body ECU) and combination meter assembly through the CAN communication system.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

(a) Use the Techstream to check if the CAN communication system is functioning properly Diagnosis System.

OK:

CAN DTC is not output.

NG -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting