Communication For Initializing Impossible: Notes
Diagnosis:
Subaru Select Monitor communication line is open or shorted.
Trouble symptom:
Not communicable with Subaru Select Monitor.
Wiring diagram:
CAN communication system <Ref. to WIRING DIAGRAM , CAN Communication System.>
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK SUBARU SELECT MONITOR.
|
Is communication performed normally? | Go to step 2 . | Subaru Select Monitor unit or diagnosis cable is faulty. Or check the fuse on the vehicle side. |
| 2 CHECK DATA LINK CONNECTOR. Use a tester to check for continuity in the ground circuit. Connector & terminal (B40) No. 4 - Chassis ground: (B40) No. 5 - (B134) No. 53: |
Is there continuity? | Go to step 3 . | Repair or replace the open circuit. |
3 CHECK DATA LINK CONNECTOR.
Connector & terminal (B40) No. 8 (+) - Chassis ground (-): (B40) No. 16 (+) - Chassis ground (-): |
Is the voltage 10 V or more? | Go to step 4 . | Check the power supply circuits to the data link connector. |
| 4 CHECK COMMUNICATION FOR INITIALIZING ERROR. Perform the communication for initializing with each module by connecting the Subaru Select Monitor. (For systems whose module can communicate with diagnostic devices)
NOTE:
By performing «CAN bus check», confirmation of minimal connection modules is possible. <Ref. to
CAN BUS ECU COMMUNICATION CHECK .>
|
Is the communication possible with all modules? | The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
|
Perform the inspection 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.> |