How To Proceed With Troubleshooting
- Vehicle brought into a workshop
NEXT
- Diagnostic questioning and symptom confirmation (see CUSTOMER PROBLEM ANALYSIS CHECK
)
Ask the customer about symptoms and confirm malfunctions. Fill out the Customer Problem Analysis check sheet.
The screen displays nothing (go to step 6 , proceed to " BLACK SCREEN (NO IMAGE APPEARS ON NAVIGATION/AUDIO SCREEN) ")
Other symptoms (go to step 3)
- Confirm the system normal condition (see SYSTEM NORMAL CONDITION CHECK
)
Applicable (This is not a malfunction.)
Not applicable (go to step 4)
- Check the diagnostic trouble codes (see SYSTEM CHECK MODE (DTC CHECK)
)
HINT:
- Even if the malfunction symptom is not confirmed, check the diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.
- Refer to the detailed description on the diagnostic screen, as necessary (see DIAGNOSIS DISPLAY DETAILED DESCRIPTION ).
A code is output (go to step 5)
A code is not output (go to step 6 )
- (see DIAGNOSTIC TROUBLE CODE CHART
)
Find the output code on the diagnostic trouble code chart.
NEXT: Output the diagnostic trouble code. (go to step 8 )
- (see PROBLEM SYMPTOMS TABLE
)
Find the applicable symptom code in the problem symptoms table.
HINT:
If the symptom does not recur and no code is output, perform the symptom reproduction method (see HOW TO PROCEED WITH TROUBLESHOOTING ).
There is applicable symptom code in the table (go to step 8 )
There is applicable symptom code in the table (go to step 7)
- Check the ECU terminal arrangement based on the malfunction symptom (see TERMINALS OF ECU
)
NEXT
- Check the circuit
Adjust, repair or replace as necessary.
NEXT
- Recheck the diagnostic trouble code (see SYSTEM CHECK MODE (DTC CLEAR/RECHECK)
)
HINT:
After deleting the DTC, recheck the diagnostic trouble code.
NEXT
- Perform confirmation test
NEXT
END