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 intelligent tester.
- VEHICLE BROUGHT TO WORKSHOP
NEXT
- CUSTOMER PROBLEM ANALYSIS
NEXT
- CONNECT INTELLIGENT TESTER TO DLC3*
HINT:
If the display indicates a communication fault in the tester, inspect DLC3.
NEXT
- CHECK DTC AND FREEZE FRAME DATA*
HINT:
Record or print DTCs and freeze frame data, if needed.
NEXT
- CLEAR DTC AND FREEZE FRAME DATA*
NEXT
- VISUAL INSPECTION
NEXT
- SETTING CHECK MODE DIAGNOSIS*
NEXT
- PROBLEM SYMPTOM CONFIRMATION
If the engine does not start, first perform the "CHECK DTC" procedures and "CONDUCT BASIC INSPECTION" procedures below.
PROBLEM SYMPTOM CONFIRMATIONMalfunction does not occur A Malfunction occurs B B : GO TO STEP 10
A : Go to Next Step
- SYMPTOM SIMULATION
NEXT
- DTC CHECK* MALFUNCTION CODE REFERENCE
Malfunction code A No code B B : GO TO STEP 12
A : Go to Next Step
- DTC CHART
NEXT : GO TO STEP 14
- BASIC INSPECTION BASIC INSPECTION REFERENCE
Wrong parts not confirmed A Wrong parts confirmed B B : GO TO STEP 17
A : Go to Next Step
- PERFORM SYMPTOMS TABLE PERFORM SYMPTOMS TABLE
Wrong circuit confirmed A Wrong parts confirmed B B : GO TO STEP 17
A : Go to Next Step
- CHECK ECM POWER SOURCE CIRCUIT
NEXT
- CIRCUIT INSPECTION CIRCUIT INSPECTION REFERENCE
Malfunction not confirmed A Malfunction confirmed B B : GO TO STEP 18
A : Go to Next Step
- CHECK FOR INTERMITTENT PROBLEMS
NEXT : GO TO STEP 18
- PARTS INSPECTION
NEXT
- IDENTIFICATION OF PROBLEM
NEXT
- ADJUSTMENT AND/OR REPAIR
NEXT
- CONFIRMATION TEST
NEXT : END
Use the Manual With the Right Hardware
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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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