Immobilizer Control System Check
DIAGNOSTIC INFORMATION AND PROCEDURE - IMMOBILIZER CONTROL SYSTEM
| Step | Action | YES | NO |
|---|---|---|---|
| 1 | Immobilizer indicator lamp ON check
Does immobilizer indicator lamp (1) come on? |
Go to Step 2. | Check if DTC P1636 and/or P1638 are detected by ECM referring to DIAGNOSTIC TROUBLE CODE (DTC) CHECK . If detected, perform the troubleshooting. Refer to appropriate DTC diagnostics. If not detected, go to IMMOBILIZER INDICATOR LAMP DOES NOT COME ON WITH IGNITION SWITCH ON AND ENGINE STOP . |
| 2 | Immobilizer indicator lamp flash check Does immobilizer indicator lamp flash on and off continuously in Step 1? |
Check what DTC is detected by ECM referring to DIAGNOSTIC TROUBLE CODE (DTC) CHECK . Then, perform the troubleshooting. Refer to appropriate DTC diagnostics. | Go to Step 3. |
| 3 | Engine start check
Does engine start? |
Go to Step 4. | Perform ENGINE AND EMISSION CONTROL SYSTEM CHECK . |
| 4 | Immobilizer indicator lamp remain ON check
Does immobilizer indicator lamp remain ON after engine start? |
Go to IMMOBILIZER INDICATOR LAMP REMAINS ON AFTER ENGINE START . | Immobilizer control system is in good condition. Then, go to KEYLESS START SYSTEM CHECK for the vehicle with keyless start system. |