How to Proceed With Troubleshooting

HOW TO PROCEED WITH TROUBLESHOOTING
Carry out troubleshooting in accordance with the following procedure. Here, only the basic procedure is shown. Details are provided in each section, showing the most effective methods for each circuit. Confirm the troubleshooting procedures first for the relevant circuit before beginning troubleshooting of that circuit.





[1]
Ask the customer about the conditions and the environment when the problem occurred.
Customer Problem Analysis Check Sheet

[2] [3]
Confirm the symptoms and the problem conditions, and check the diagnostic trouble codes.
Symptom Confirmation and Trouble Code Check

When the problem symptoms do not appear during confirmation, use the symptom simulation method described in "Symptom Simulation Methods".
Symptom Simulation Methods

[4] [5] [6]
Check the results obtained in Step [2], then confirm the inspection procedure for the system or the part which should be checked using the diagnostic trouble code chart or the "Matrix Chart Of Problem Symptoms" under Diagnosis By Symptom.
How to Use the Diagnostic Chart and Inspection Procedure
How To Use the Matrix Chart of Problem Symptoms


[7]
Check and repair the affected system or part in accordance with the instructions in Step [6]

[8]
After completing repairs, confirm that the problem has been eliminated. (If the problem is not reproduced, perform the confirmation test under the same conditions and in the same environment as when it occurred for the first time.)