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
NEXT: Go to next step
- CUSTOMER PROBLEM ANALYSIS
- Interview the customer and confirm the problem. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
.
NEXT: Go to next step
- Interview the customer and confirm the problem. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
.
- CHECK DTC AND FREEZE FRAME DATA*
- Check and record DTCs and Freeze Frame Data.
- Clear the DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR for DTC Check/Clear, and. Refer to FREEZE FRAME DATA for Freeze Frame Data).
- Reconfirm the DTCs.
- Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR for DTC Check/Clear, and. Refer to FREEZE FRAME DATA for Freeze Frame Data).
HINT:
- When DTCs indicating CAN communication system malfunctions are output, repair the CAN communication system before repairing each corresponding sensor. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
- If any of DTCs U0123/62, U0124/95, U0126/63, and U0293/59 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit. Refer to CHECK FOR INTERMITTENT PROBLEMS .
- If the Techstream cannot communicate with the skid control ECU, inspect the CAN communication system. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
- If there is no response from the skid control ECU, inspect the IG1 circuit of the skid control ECU. Refer to DTC C1241/41: Low Battery Positive Voltage; DTC C1242/42: Open in IG1 / IG2 Power Source Circuit .
Result
Result Proceed to DTC is output A DTC is not output (Problem symptom does not occur) B DTC is not output (Problem symptom occurs) C
B → Go to step 5
C → Go to step 6
A: Go to next step
- Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR for DTC Check/Clear, and. Refer to FREEZE FRAME DATA for Freeze Frame Data).
- DIAGNOSTIC TROUBLE CODE CHART
- Proceed to Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART .
NEXT → Go to step 7
- Proceed to Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART .
- SYMPTOM SIMULATION
- Proceed to How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
.
NEXT: Go to next step
- Proceed to How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
.
- PROBLEM SYMPTOMS TABLE
- Proceed to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .
NEXT: Go to next step
- Proceed to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .
- CIRCUIT INSPECTION*
NEXT: Go to next step
- IDENTIFICATION OF PROBLEM
NEXT: Go to next step
- REPAIR OR REPLACEMENT
NEXT: Go to next step
- 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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