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 [11/2023 - ]: Procedure
- VEHICLE BROUGHT TO WORKSHOP
Result
Proceed to NEXT Result:
NEXT
See step 2
- CUSTOMER PROBLEM ANALYSIS
Result
Proceed to NEXT Result:
NEXT
See step 3
- CONNECT GTS TO THE DLC3*
HINT:
If the display on the tester indicates a communication error, inspect the DLC3.
Result
Proceed to NEXT Result:
NEXT
See step 4
- CHECK DTC AND FREEZE FRAME DATA*
Refer to DTC CHECK / CLEAR [11/2023 - ]
HINT:
- Make sure to save freeze frame data because the data is necessary for performing simulation tests.
- For the Hybrid Control System, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs. By following the diagnosis path based on the combination of output DTCs, it is possible to narrow down the problem early and avoid unnecessary diagnosis.
Result
Proceed to NEXT Result:
NEXT
See step 5
- CLEAR DTC AND FREEZE FRAME DATA*
Refer to DTC CHECK / CLEAR [11/2023 - ]
Result
Proceed to NEXT Result:
NEXT
See step 6
- CONDUCT VISUAL INSPECTION
Result
Proceed to NEXT Result:
NEXT
See step 7
- CONFIRM PROBLEM SYMPTOMS
HINT:
If the hybrid system does not start, perform steps 9 and 11 first.
Result
Proceed to Malfunction does not occur. Malfunction occurs. Result:
Malfunction occurs.
See step 10
Result:
Malfunction does not occur.
See step 8
- DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS
Result
Proceed to NEXT Result:
NEXT
See step 9
- CHECK FOR DTCS*
Refer to DTC CHECK / CLEAR [11/2023 - ]
Result
Proceed to DTCs are output. DTCs are not output. Result:
DTCs are not output.
See step 16
Result:
DTCs are output.
See step 10
- REFER TO DTC CHART
Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ]
Result
Proceed to NEXT Result:
NEXT
See step 11
- CONDUCT CIRCUIT INSPECTION
Result
Proceed to Malfunction not confirmed. Malfunction confirmed. Result:
Malfunction confirmed.
See step 13
Result:
Malfunction not confirmed.
See step 12
- CHECK FOR INTERMITTENT PROBLEMS
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]
Result
Proceed to NEXT Result:
NEXT
See step 13
- IDENTIFY PROBLEM
Result
Proceed to NEXT Result:
NEXT
See step 14
- ADJUST AND/OR REPAIR
Result
Proceed to NEXT Result:
NEXT
See step 15
- CONDUCT CONFIRMATION TEST
Result
Proceed to NEXT Result:
NEXT
END
- CONDUCT BASIC INSPECTION
Result
Proceed to Malfunctioning parts not confirmed. Malfunctioning parts confirmed. Result:
Malfunctioning parts confirmed.
See step 18
Result:
Malfunctioning parts not confirmed.
See step 17
- CHECK ECU POWER SOURCE CIRCUIT
Result
Proceed to NEXT Result:
NEXT
See step 11
- CONDUCT PARTS INSPECTION
Result
Proceed to NEXT Result:
NEXT
See step 13
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.