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.
Problem Symptoms Table
HINT:
Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary
Smart access system with push-button start
| Symptom | Suspected Area | See |
|---|---|---|
| Power source mode does not change | AM2 fuse | POWER SOURCE MODE DOES NOT CHANGE |
| P-J/B fuse | POWER SOURCE MODE DOES NOT CHANGE | |
| P IG2 fuse | POWER SOURCE MODE DOES NOT CHANGE | |
| Ignition relay No 2 (IG2) | IGNITION RELAY NO. 2 | |
| Power switch | POWER SWITCH | |
| Main body ECU | TERMINALS OF ECU | |
| Room oscillator does not recognize key | ROOM OSCILLATOR DOES NOT RECOGNIZE KEY | |
| Harness or connector | POWER SOURCE MODE DOES NOT CHANGE | |
| Power switch indicator circuit | Power switch | POWER SWITCH |
| Main body ECU | TERMINALS OF ECU | |
| Harness or connector | POWER SWITCH INDICATOR CIRCUIT | |
| Power source mode does not change to ON (READY) | STOP fuse | POWER SOURCE MODE DOES NOT CHANGE TO ON (READY) |
| Stop light switch | INSPECTION | |
| Transmission floor shift assembly (shift lock control ECU) | SHIFT LOCK SYSTEM | |
| Steering lock actuator assembly (Steering lock control ECU) | PROBLEM SYMPTOMS TABLE | |
| Hybrid vehicle control ECU | PROBLEM SYMPTOMS TABLE | |
| ID code box | TERMINALS OF ECU | |
| Certification ECU | TERMINALS OF ECU | |
| Main body ECU | TERMINALS OF ECU | |
| Steering lock system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Engine immobilizer system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Hybrid control system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Power source mode does not change | POWER SOURCE MODE DOES NOT CHANGE | |
| Steering lock motor drive power circuit | STEERING LOCK MOTOR DRIVE POWER CIRCUIT | |
| Harness or connector | POWER SOURCE MODE DOES NOT CHANGE TO ON (READY) |
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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