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Home >> Subaru >> 2013 >> Legacy Premium, Automatic CVT Trans >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> LAN Communication System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U121A Can-HS Meter Unit Data Abnormal >> Trouble Symptom

DTC U121A Can-HS Meter Unit Data Abnormal: Trouble Symptom

Display of combination meter does not operate properly.

DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK DTC. 
Using the Subaru Select Monitor, read all DTCs.
Is there DTC other than CAN system? Perform the diagnosis according to DTCs for other control modules. Go to step .
2 CHECK DTC. 
Check DTC indicated in CAN system.
Is U121A a current malfunction? Go to step . Go to step .
3 CHECK DTC. 
Turn the ignition switch to OFF, and read the DTC again.
Is U121A a current malfunction? Replace the combination meter. Refer to REMOVAL . Go to step .
4 CHECK COMBINATION METER. 
  1. Disconnect the combination meter connector.
  2. Using the Subaru Select Monitor, perform the clear memory.
  3. Using the Subaru Select Monitor, read DTC of CAN system.
Is the displayed DTC other than U121A? Go to step . Replace the combination meter. Refer to REMOVAL .
5 CHECK COMBINATION METER. 
  1. Connect the combination meter connector.
  2. Check the combination meter. Refer to SELF-DIAGNOSIS DISPLAY MODE .
Is there any fault? Perform the diagnosis according to the inspection of the combination meter. Replace the body integrated unit. Refer to REMOVAL .