Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Detailed Flow
- GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred).
GO TO STEP 2 .
- CHECK DTC WITH AUTOMATIC DRIVE POSITIONER SYSTEM
Check "Self Diagnostic Result" with CONSULT. Refer to DTC INDEX
Is any symptom described and any DTC is displayed?
Symptom is described, DTC is displayed.
GO TO STEP 3 .
Symptom is not described, DTC is displayed.
GO TO STEP 6 .
Symptom is described, DTC is not displayed.
GO TO STEP 4 .
- CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
GO TO STEP 6 .
- CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
GO TO STEP 5 .
- CHECK NORMAL OPERATING CONDITION
Check normal operating condition. Refer to DESCRIPTION .
Is the incident normal operation?
YES
INSPECTION END
NO
GO TO STEP 7 .
- PERFORM DTC CONFIRMATION PROCEDURE
Perform the confirmation procedure for the detected DTC.
Is the DTC displayed?
YES
GO TO STEP 8 .
NO
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
- DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS
Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step 4, and determine the trouble diagnosis order based on possible causes and symptom.
GO TO STEP 8 .
- PERFORM COMPONENT FUNCTION CHECK
Perform the component function check for the isolated malfunctioning point.
GO TO STEP 9 .
- DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Isolate the malfunctioning point by performing the diagnosis procedure relevant to the symptom during the component diagnosis.
GO TO STEP 10 .
- REPAIR OR REPLACE
Repair or replace the malfunctioning part.
GO TO STEP 11 .
- FINAL CHECK
Perform the DTC confirmation procedure (if DTC is detected) or component function check (if no DTC is detected) again, and then check that the malfunction can be repaired securely.
Are all malfunctions corrected?
YES
INSPECTION END
Symptom is detected.
GO TO STEP 5 .
DTC is detected.
GO TO STEP 6 .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.