Check Using The DTC Check Sheet

DTC check sheet

Fig 1: DTC Check Sheet

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 MODULE INSTALLATION CHECK. Using the check sheet for communication for initializing, check the vehicle installation module (module targeted for CAN communication). Write "-" marks in the field for installation check (A) if the vehicle to be inspected does not have relevant module. Write "-" marks in all blank fields on the same row that the "-" mark has filled in.	Was the module installation check on the left performed?	Go to step 2 .	Perform the module installation check, Go to step 2 .
2 CHECK DTC (BUS OFF DETECTION/DATA NOT RECEIVED). Check the DTC. NOTE: It becomes impossible for CAN diagnostic module to read DTC, if there is a current malfunction of open harness (data not received). If this occurs, perform the "Check using the check sheet of communication for initializing" <Ref. to CHECK USING THE CHECK SHEET OF COMMUNICATION FOR INITIALIZING , COMMUNICATION FOR INITIALIZING IMPOSSIBLE, Subaru Select Monitor.>, and use this check sheet to confirm that the corresponding part becomes the past malfunction.	Is DTC bus off or data not received?	Perform the diagnosis for the displayed DTCs.	Perform the communication check, Go to step 3 .
3 CHECK DTC (BUS OFF DETECTION/DATA NOT RECEIVED). Mark "X" in the field corresponding to the DTCs that has been detected by each module in the DTC check sheet.	Were all the corresponding field in the DTC check sheet filled?	Go to step 4 .	Fill all the corresponding field in the DTC check sheet, Go to step 4 .
4 CHECK CAN COMMUNICATION LINE. Check the CAN communication line by referring to the example of DTC data not received.	Is CAN communication line faulty?	Repair or replace the faulty portion of the harness.	Perform the diagnosis for the displayed DTCs.