Subaru Legacy BN/BS (2015-2019) Service Manual: Caution
1. Never connect the battery in reverse polarity. • Doing so may immediately damage the A/C CM. 2. Do not disconnect the battery terminals while the engine is running. • A large counter electromotive force will be generated in the generator, and this voltage may damage electronic parts such as A/C CM etc. 3. Before disconnecting the connectors of sensors and the A/C CM, be sure to turn off the ignition switch. • A/C CM may be damaged. 4. Every A/C-related part is a precision part. Do not drop them. 5. Airbag system wiring harness is routed near the A/C control panel and junction box. CAUTION: • Do not use electrical test equipment on the airbag system wiring harness and connector. • Be careful not to damage the airbag system wiring harness when servicing the A/C control panel and junction box. |
Preparation tool
1. SPECIAL TOOLILLUSTRATIONTOOL NUMBERDESCRIPTIONREMARKS — (Newly adopted tool)SUBARU SELECT MONITOR 4Used for setting of each function and troubleshooting for electrical system.NOTE:For detailed op ...
Inspection
Before performing the diagnosis, check the following items which may cause problems in the A/C system.1. BATTERYCheck the battery. Battery > INSPECTION Battery > INSPECTIONNOTE:If the battery voltag ...
Other materials:
Dtc u0402 invalid data received from tcm
NOTE:For the diagnostic procedure, refer to LAN section. Basic Diagnostic Procedure1. OUTLINE OF DIAGNOSISDetect malfunction of CAN communication.Judge as NG when data received from TCM, VDC CM and combination meter is not normal.2. COMPONENT DESCRIPTION(Common Specifications)CAN Protocol 2.0 B (Ac ...
