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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Power does not turn on (neither ACC nor IG is possible). | Smart entry and start system (for entry function) | |
| AM2 NO. 2 fuse | - | |
| MAIN fuse | - | |
| Engine switch | - | |
| Power management control ECU*1 | - | |
| Power source control ECU*2 | - | |
| Wire Harness or Connector | - | |
| Power is not turned on (only IG is not turned on). | AM2 NO. 2 fuse | |
| MAIN fuse | - | |
| Engine switch | - | |
| Power management control ECU*1 | - | |
| Power source control ECU*2 | - | |
| Instrument Panel Junction Block (IG1 Relay 1, 2) | - | |
| Integration Relay (IG2 Relay) | - | |
| Wire Harness or Connector | - | |
| Power is not turned on (only ACC is not turned on). | AM2 NO. 2 fuse | |
| MAIN fuse | - | |
| Engine switch | - | |
| Power management control ECU*1 | - | |
| Power source control ECU*2 | - | |
| Instrument Panel Junction Block (ACC Relay) | - | |
| Wire Harness or Connector | - | |
| Engine does not start. | Steering lock system | |
| Engine immobiliser system | - | |
| Vehicle stability control system | - | |
| SFI system | - | |
| Power management control ECU*1 | - | |
| Power source control ECU*2 | - | |
| STOP fuse | - | |
| Stop light switch assembly | - | |
| ST relay | - | |
| Park/neutral position switch assembly | - | |
| Certification ECU (smart key ECU assembly) | - | |
| ID code box (immobiliser code ECU) | - | |
| Steering lock actuator assembly (steering lock ECU) | - | |
| Wire harness or connector | - |
*1: for 1KR-FE and 1NR-FE
*2: for 1ND-TV