Chapter 1 Troubleshooting
1-25
Troubleshooting in this manual assumes use of Diag. tools (maintenance tools).
However, the troubleshooting allows for the case where the Diag tools are not used.
You can correct troubles according to these troubleshooting procedures after
understanding them well.
1. Progressing with the Troubleshooting
After making sure of actual condition of a trouble, proceed with the troublesh ooting process making use of
the Fault Isolation Procedure (FIP), “Operation of Diagostics” (Chapter 2 ), “Plug/Jack (P/J) Connector
Locations” (Chapter 7), and “Principles of Operation” (Chapter 6).

1.1 Flow of Troubleshooting

Flow of the troubleshooting is as follows:
Prior check
Condition check
Start
Level 1 FIP
Trouble recovery check
Preventive
maintenance
End
Diagnostic operation
Operational principle
Wiring connection
diagram
Level 2 FIP