STEERING LOCK SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Steering wheel cannot unlock (engine cannot start). | Entry and start system | |
| Main body ECU | ||
| Certification ECU | ||
| Power source circuit | ||
| Steering lock motor drive power circuit | ||
| Steering lock actuator (Steering lock ECU) | ||
| Unlock position sensor signal circuit | ||
| Refer to "Unable to Unlock Steering Wheel". | ||
| Steering wheel cannot unlock (after connecting intelligent tester to DLC3, starting engine, Data List certification ECUs item Lock/Unlock Receive data is read, and steering lock command reception records display is NO). | Entry and start system | |
| Main body ECU | ||
| Certification ECU | ||
| ID code box | - | |
| LIN communication line | ||
| Steering wheel cannot lock. | Entry and start system | |
| Main body ECU | ||
| Certification ECU | ||
| Power source circuit | ||
| Steering lock motor drive power circuit | ||
| Steering lock actuator (Steering lock ECU) | ||
| Steering wheel cannot lock (after connecting intelligent tester to DLC3, starting engine, Data List certification ECUs item Lock/Unlock Receive data is read, and steering lock command reception records display is NO). | Entry and start system | |
| Main body ECU | ||
| Certification ECU | ||
| ID code box | - | |
| LIN communication line |