Scan Tool Testing and Procedures

Subaru Select Monitor

OPERATION

For details of basic operations, refer to "PC application help for Subaru Select Monitor".


COMMUNICATION FOR INITIALIZING IMPOSSIBLE

DIAGNOSIS:
Subaru Select Monitor communication line is open or shorted.

TROUBLE SYMPTOM:
Not communicable with Subaru Select Monitor.

WIRING DIAGRAM:













1. CHECK USING THE CHECK SHEET OF COMMUNICATION FOR INITIALIZING
- Network diagram






- Check sheet of communication for initializing






1. Module installation check
1. Write "-" marks in the field for INSTALLATION Check if the vehicle to be inspected does not have relevant module.
2. Write "-" marks in all blank fields on the same row that the "-" mark has filled in.

NOTE: Example of writing Scan Tool Testing and Procedures

2. SSM communication initialization check
1. Write "()" marks in the field for Communication Initialization if the module succeeded in the communication for initializing with Select Monitor.
If the communication with all modules is not possible, go to 3).
2. Write "()" marks in all blank fields on the same row that the "()" mark has filled in.
3. When at least one field in a column of Wiring LOCATION is filled with the "()" mark, then the wiring for that location is normal, Write "()" marks in all blank fields on the same column that the "()" mark has filled in under the circled number.
4. Check the open circuit of the modules which have no "()" mark in their columns of the Wiring location in ascending order. (only for installed modules)
5. If the communication is not possible after checking all harnesses, check the module power supply line.
6. Replace the module if the power supply line is normal.

NOTE:
- Example of writing Scan Tool Testing and Procedures
- INSPECTION using the communication for initializing of Subaru Select Monitor cannot be used to diagnose the wiring location marked with "-". Example of DTC data not received LAN System (Diagnostics) and DTC matrix LAN System (Diagnostics) should be used to identify the faulty portion.

3. SSM communication initialization check (impossible to communicate with all modules)

NOTE: If at least one module becomes possible to communicate, return to 2).

1. Check for the short circuit to ground. Inspection If it is normal, go to the next.
2. Check for the short circuit to battery. Inspection If it is normal, go to the next.
3. Perform the inspection for the resistance of 52 ohms or less (short between wires). Inspection If it is normal, go to the next.
4. Check for the open circuit of network diagram No. 8 (data link connector).

2. EXAMPLE OF WRITING FOR THE CHECK SHEET OF COMMUNICATION FOR INITIALIZING

When (1) is open






When (2) is open






When (3) is open






When either one of (4), (5) or (6) is open

NOTE: Each module can be distinguished from the others depending on the difference of no-receive conditions between modules. LAN System (Diagnostics)






When either one of (6), (7), (12), (13), (14) or (16) is open


NOTE: Each module can be distinguished from the others depending on the difference of no-receive conditions between modules. LAN System (Diagnostics)






When (8) is open






When (9) is open






When (10) is open






When (11) is open