Without Scan Tool

Read the system check result




1. If all check results are "EXCH," "CHEK" or "Old," Touch the display to check the contents on the "Unit Check Mode" screen and record them on the customer problem analysis check sheet.

HINT:
- If all check results are "OK," go to communication DTC check (go to step PROCEDURE 1).
- If a device name is not known, its physical address is displayed.




2. If "EXCH", "CHEK" and "Old" as well as "OK" exist, press the service switch to return to the "System Check Mode". Then, check the .Unit Check Mode. screen and record them on the customer problem analysis check sheet.

Read the communication diagnostic check result (PROCEDURE 1)




1. Return to the "System Check Mode", and press "LAN Mon" switch to enter the LAN monitor screen.




2. If the result is "CHEK" or "Old," touch the result switch to check the contents on the individual communication diagnostic screen and record them on the customer problem analysis check sheet.

HINT:
- If all check results are "No Err," the system judges that no DTC exists.
- The sub-code (relevant device) will be indicated by its physical address.




3. If check results of other devices are "CHEK," press the "Service" switch to return to the original "LAN Monitor" screen. Then, check the individual communication diagnostic screen for the next device and record the result on the customer problem analysis check sheet.