Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
If the problem only occurs in certain locations or at certain times of day, check for wave interference.
If the vehicle components are added, check for wave interference from the added components.
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine cannot be started*1 | Certification ECU (smart key ECU assembly) | - |
| Engine cannot be started*1 | ID code box (immobiliser code ECU) | |
| ECM | ||
| SFI system*3 | ||
| ECD system*4 | ||
| Power source mode cannot be changed*1 | Engine switch | |
| Certification ECU (smart key ECU assembly) | ||
| Steering lock lock/unlock not possible*2 | Steering lock actuator assembly (steering lock ECU) |
*1: Refer to Problem Symptoms Table for Entry and Start System (for Start Function) Click here.
*2: Refer to Problem Symptoms Table for Steering Lock System Click here.
*3: except 1ND-TV
*4: for 1ND-TV