1H
Ignition System Symptom Diagnosis
Condition Possible Cause Action
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 or high-tension cord(s)
Connect securely.
Faulty high-tension cord(s)
Replace.
Faulty spark plug(s)
Replace.
Faulty ignition coil
Replace ignition coil assembly.
Faulty CKP sensor or CKP sensor plate
Clean, tighten or replace.
Faulty ECM
Replace.
Poor fuel economy or engine performance
Incorrect ignition timing
Check related sensors and CKP sensor plate.
Faulty spark plug(s) or high-tension cord(s)
Adjust, clean or replace.
Faulty ignition coil assembly
Replace.
Faulty CKP sensor or CKP sensor plate
Clean, tighten or replace.
Faulty ECM
Replace.