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.
Work Flow
DETAILED FLOWÂ
- INTERVIEW THE CUSTOMERÂ
- Clarify customer concerns before inspection. First of all, perform an interview utilizing Diagnostic Work Sheet and reproduce the symptom as well as fully understand it. Ask customer about his/her concerns carefully. Check symptoms by driving vehicle with customer, if necessary.CAUTION:
Customers are not professional. Never guess easily like "maybe the customer means that...," or " maybe the customer mentions this symptom".
>>
GO TO 2.
- Clarify customer concerns before inspection. First of all, perform an interview utilizing Diagnostic Work Sheet and reproduce the symptom as well as fully understand it. Ask customer about his/her concerns carefully. Check symptoms by driving vehicle with customer, if necessary.
- CHECK SYMPTOMÂ
- Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained in the interview. Also check that the symptom is not caused by fail-safe mode. Refer to Fail-Safe .CAUTION:
When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.
>>
GO TO 3.
- Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained in the interview. Also check that the symptom is not caused by fail-safe mode. Refer to Fail-Safe .
- PERFORM THE SELF-DIAGNOSISÂ
CONSULT
- Ignition switch OFF → ON.CAUTION:
Be sure to wait of 10 seconds after placing ignition switch in the OFF or ON position.
- Select "Self Diagnostic Result" mode of "ABS".
- Ignition switch OFF → ON.
Is DTC detected?
YES>>
Record or print Self Diagnostic Results and Freeze Frame Data (FFD). GO TO 4.
NO>>
GO TO 6.
- RECHECK THE SYMPTOMÂ
CONSULT
- Erase "Self Diagnostic Result" mode of "ABS".
- Ignition switch OFF → ON → OFF.CAUTION:
Be sure to wait of 10 seconds after placing ignition switch in the OFF or ON position.
- Perform DTC confirmation procedures for the malfunctioning system.
Is DTC detected?
YES>>
GO TO 5.
NO>>
Check harness and connectors based on the information obtained in the interview. Refer to Intermittent Incident .
- REPAIR OR REPLACE MALFUNCTIONING COMPONENTÂ
-
- Repair or replace malfunctioning components.
- Reconnect component or connector after repairing or replacing.
- When DTC is detected, erase "Self Diagnostic Result" mode of "ABS".CAUTION:
- Ignition switch OFF → ON → OFF after erasing Self Diagnostic Result.
- Be sure to wait of 10 seconds after placing ignition switch in the OFF or ON position.
>>
GO TO 7.
-
- IDENTIFY MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSISÂ
- Identify malfunctioning system based on symptom diagnosis and perform inspection.
Can the malfunctioning system be identified?
YES>>
GO TO 7.
NO>>
Check harness and connectors based on the information obtained in the interview. Refer to Intermittent Incident .
- FINAL CHECKÂ
CONSULT
- Select "Data Monitor" mode of "ABS".
- Check the values on the diagnosis tool. Refer to Values on the Diagnosis Tool .
- Recheck the symptom and check that the symptom is not reproduced on the same conditions.
Is the symptom reproduced?
YES>>
GO TO 3.
NO>>
Inspection End.
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.