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.
How To Proceed With Troubleshooting
HINT:
*: Use the Techstream.
- VEHICLE BROUGHT TO WORKSHOP
- INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
- INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
- Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system.
Result
RESULT REFERENCEResult Proceed to DTC is not output A DTC is output B The skid control ECU sends the signals of each warning light to CAN communication.
B: GO TO CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
A: Go to Next Step
- Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system.
- CHECK DTC AND FREEZE FRAME DATA*
- CLEAR DTC AND FREEZE FRAME DATA*
- PROBLEM SYMPTOM CONFIRMATION
- DTC CHECK AND CLEAR*
- PROBLEM SYMPTOM CONFIRMATION
Result
RESULT REFERENCEResult Proceed to Symptom does not occur A Symptom occurs B B: GO TO STEP 11
A: Go to Next Step
- SYMPTOM SIMULATION
- CHECK FOR DTC (OTHER THAN CAN COMMUNICATION SYSTEM DTC)*
Result
RESULT REFERENCEResult Proceed to DTC is not output A DTC is output B B: GO TO STEP 12
A: Go to Next Step
- PROBLEM SYMPTOMS TABLE
NEXT: GO TO STEP 14
- DTC CHART
- CIRCUIT INSPECTION*
- IDENTIFICATION OF PROBLEM
- REPAIR OR REPLACE
- CONFIRMATION TEST*
NEXT: END
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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.
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