How To Proceed With Troubleshooting
Total OBD & ECU Auto Diagnostics
VEHICLE BROUGHT INTO A WORKSHOP
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DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION
(a) Ask the customer about symptoms and confirm malfunctions.
THE SCREEN DISPLAYS NOTHING (GO TO STEP 8, AND PROCEED TO "BLACK SCREEN")
OTHER SYMPTOMS (GO TO STEP 3)
CONFIRM THE SYSTEM NORMAL CONDITION
APPLICABLE (THIS IS NOT A MALFUNCTION)
NOT APPLICABLE (GO TO STEP 4)
CHECK DTC
HINT:
If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part.
A CODE IS OUTPUT (GO TO STEP 5)
A CODE IS NOT OUTPUT (GO TO STEP 8)
DTC CLEAR
(a) Clear the DTCs and finish the diagnostic mode. HINT:
The currently output DTCs may not indicate actual malfunctions depending on the vehicle conditions.
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Do It Yourself Car Diagnosis
Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.
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