Check Using The Check Sheet Of Communication For Initializing

1. Using the check sheet for communication for initializing, check the vehicle installation module (module targeted for CAN communication).
2. Write "-" marks in the field for installation check (A) if the vehicle to be inspected does not have relevant module.
3. Write "-" marks in all blank fields on the same row that the "-" mark has filled in.

Was the module installation check above performed?

Yes  : Go to  2.

No  : Perform the module installation check, Go to  2.

1. Connect the Subaru Select Monitor to the vehicle.
2. Check if communication with the module installed on the vehicle is possible.
3. Enter "O" in the field for communication for initializing (B) of the unit where initialization communication of Subaru Select Monitor succeeded. If communication is impossible, enter "x".
4. Enter "O" in all blanks on the same line where "O" was entered.
5. When "O" can be entered in even one unit in each column of the wiring part (C), the wiring of that part is normal. Enter "O" below the circled number and enter "O" in all blanks in the same column.

Was the communication checked with all the modules installed on the vehicle?

Yes  : Go to  3.

No  : Perform the communication check, Go to  3.

Check if communication with all the modules installed on the vehicle was possible.

Is "x" entered in all the fields for communication for initializing (B)? (Communication is not possible between all the modules and the Subaru Select Monitor)

Yes  : Go to  6.

No  : Go to  4.

Check the disconnection of the wiring part (C) where "O" is not entered on the check sheet of communication for initializing in ascending order of number referring to the network diagram.

Is CAN communication line faulty?

Yes  : Repair or replace the faulty portion of the harness.

No  : Go to  5.

Check power supply circuit of the control module that cannot perform communication. (Check the harness between control module connector and battery, and check the fuse.)

Is power supply circuit faulty?

Yes  : Repair or replace the faulty portion of the power supply circuit.

No  : Go to step  5 in the Basic Diagnostic Procedure. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE>FLOW>CHECK DTC .

Check for short circuit to ground of CAN communication line. Ref. to LAN SYSTEM (DIAGNOSTICS)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>GROUND SHORT INSPECTION .

Is CAN communication line faulty?

Yes  : Repair or replace the faulty portion of the harness.

No  : Go to  7.

Check for short circuit to power supply of CAN communication line. Ref. to LAN SYSTEM (DIAGNOSTICS)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>CHECK POWER SUPPLY SHORT .

Is CAN communication line faulty?

Yes  : Repair or replace the faulty portion of the harness.

No  : Go to  8.

Check for short circuit between the CAN communication lines. Ref. to LAN SYSTEM (DIAGNOSTICS)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>52 Ω OR LESS .

Is CAN communication line faulty?

Yes  : Repair or replace the faulty portion of the harness.

No  : Go to  9.

Check the data link connector harness. (Check for open circuit of network diagram No. 1)

Is CAN communication line faulty?

Yes  : Repair or replace the faulty portion of the harness.

No  : Go to  10.

Connect the Subaru Select Monitor to another vehicle to check whether the communication can be executed normally.

Is the Subaru Select Monitor OK?

Yes  : It is possible that poor contact occurs at the data link connector.

No  : The Subaru Select Monitor is faulty. Replace with a normal Subaru Select Monitor, and perform the diagnosis.