Ignition System Symptom Diagnosis
IGNITION SYSTEM SYMPTOM DIAGNOSIS
| Condition | Possible cause | Correction / Reference Item> |
|---|---|---|
| Engine cranks, but will not start or hard to start | No spark | |
| Blown fuse for ignition coil | Replace. | |
| Loose connection or disconnection of lead wire | Connect securely. | |
| Faulty spark plug(s) | Adjust, clean or replace. | |
| Faulty ignition coil (in ignition coil assembly) | Replace. | |
| Faulty CMP sensor | Replace. | |
| Faulty ECM | Replace. | |
| Maladjusted ignition timing | Adjust. | |
| Poor fuel economy or engine performance | Incorrect ignition timing | Adjust. |
| Faulty spark plug(s) | Adjust, clean or replace. | |
| Faulty ignition coil (in ignition coil assembly) | Replace. | |
| Faulty CMP sensor | Replace. | |
| Faulty ECM | Replace. |