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.
Basic Inspection
When the malfunction is not confirmed in the DTC check, troubleshooting should be carried out in all the possible circuits considered as causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location causing the problem can be found quickly and efficiently. Therefore, using this check is essential in the engine troubleshooting.
- CHECK BATTERY VOLTAGE NOTE: Carry out this check with the engine stopped and ignition switch OFF.VOLTAGE SPECIFICATION TABLE
OK NG Voltage 11 V or more Less than 11 V NG: CHARGE OR REPLACE BATTERY
OK: Go to next step.
- CHECK IF ENGINE WILL CRANK
NG: PROCEED TO PROBLEM SYMPTOMS TABLE
OK: Go to next step.
- CHECK IF ENGINE STARTS
NG: Go to step 7
OK: Go to next step.
- CHECK AIR FILTER
- Visually check that the air filter is not excessively dirty or oily.
NG: REPLACE AIR FILTER
OK: Go to next step.
- CHECK IDLE SPEED (See step 8 on INSPECTION
)
NG: PROCEED TO PROBLEM SYMPTOMS TABLE
OK: Go to next step.
- CHECK IGNITION TIMING (See step 7 on INSPECTION
)
NG: PROCEED TO INSPECTION AND CONTINUE TO TROUBLESHOOT
OK: Go to next step.
- CHECK FUEL PRESSURE (See ON-VEHICLE INSPECTION
)
NG: PROCEED TO LOCATION AND CONTINUE TO TROUBLESHOOT
OK: Go to next step.
- CHECK FOR SPARK (See INSPECTION
)
NG: PROCEED TO INSPECTION AND CONTINUE TO TROUBLESHOOT
OK: PROCEED TO PROBLEM SYMPTOMS TABLE
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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