Problem Symptoms Table
HINT:
- Inspect the fuse and relay before confirming the suspected area in the table below.
- Inspect each malfunction circuit in numerical order for the corresponding symptom.
If any malfunction still exists even after checking and confirming that all the circuits are normal, replace the ECU.
ENGINE IMMOBILIZER SYSTEM
ENGINE IMMOBILIZER SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Immobilizer is not set. (Engine starts with key codes other than the registered key code.) | 1. Door courtesy switch circuit | DOOR COURTESY SWITCH CIRCUIT |
| 2. Transponder key ECU assembly | - | |
| Engine does not start. | 1. Key | DATA LIST / ACTIVE TEST |
| 2. Key unlock warning switch circuit | DTC B2780 PUSH SWITCH / KEY UNLOCK WARNING SWITCH MALFUNCTION | |
| 3. Transponder key amplifier circuit | DTC B2784 ANTENNA COIL OPEN / SHORT | |
| 4. Transponder key ECU assembly | - | |
| 5. ECM | - | |
| Security indicator is always ON. | 1. Security indicator light | SECURITY INDICATOR LIGHT CIRCUIT |
| 2. Transponder key ECU assembly | - | |
| Security indicator is always ON. (Although code has been registered in the automatic registration mode, indicator does not go off.) | 1. Transponder key amplifier circuit | DTC B2784 ANTENNA COIL OPEN / SHORT |
| 2. Transponder key ECU assembly | - | |
| Security indicator is OFF. | 1. Security indicator light circuit | SECURITY INDICATOR LIGHT CIRCUIT |
| 2. Transponder key ECU assembly | - | |
| Security indicator is abnormally blinking. | Transponder key ECU assembly | - |
| No code is output. | 1. ECU power source circuit | ECU POWER SOURCE CIRCUIT |
| 2. Diagnosis circuit | DIAGNOSIS CIRCUIT | |
| 3. Transponder key ECU assembly | - |