| SONATA(YF) >2013 > G 2.4 GDI > Engine Electrical System > General Information>Troubleshooting |

Trouble Shooting

Ignition System

Symptom | Suspect area | Remedy
Engine will not start or is hard to start (Cranks OK) | Ignition lock switch | Inspect ignition lock switch, or replace as required
Ignition coil | Inspect ignition coil, or replace as required
Spark plugs | Inspect spark plugs, or replace as required
Ignition wiring disconnected or broken | Repair wiring, or replace as required
Rough idle or stalls | Ignition wiring | Repair wiring, or replace as required
Ignition coil | Inspect ignition coil, or replace as required
Engine hesitates/poor acceleration | Spark plugs and spark plug cables | Inspect spark plugs / cable, or replace as required
Ignition wiring | Repair wiring, or replace as required
Poor mileage | Spark plugs and spark plug cables | Inspect spark plugs / cable, or replace as required

Charging System

Symptom | Suspect area | Remedy
Charging warning indicator does not light with ignition switch "ON" and engine off. | Fuse blown | Check fuses
Light burned out | Replace light
Wiring connection loose | Tighten loose connection
Electronic voltage regulator | Replace voltage regulator
Charging warning indicator does not go out with engine running. (Battery requires frequent recharging) | Drive belt loose or worn | Adjust belt tension or replace belt
Battery cable loose, corroded or worn | Inspect cable connection, repair or replace cable
Electronic voltage regulator or alternator | Replace voltage regulator or alternator
Wiring | Repair or replace wiring
Overcharge | Electronic voltage regulator | Replace voltage regulator
Voltage sensing wire | Repair or replace wiring
Discharge | Drive belt loose or worn | Adjust belt tension or replace belt
Wiring connection loose or short circuit | Inspect wiring connection, repair or replace wiring
Electronic voltage regulator or alternator | Replace voltage regulator or alternator
Poor grounding | Inspect ground or repair
Worn battery | Replace battery

Starting System

Symptom | Suspect area | Remedy
Engine will not crank | Battery charge low | Charge or replace battery
Battery cables loose, corroded or worn out | Repair or replace cables
Transaxle range switch (Vehicle with automatic transaxle only) | Refer to AT group-automatic transaxle
Fuse blown | Replace fuse
Starter faulty | Replace
Ignition switch faulty | Replace
Engine cranks slowly | Battery charge low | Charge or replace battery
Battery cables loose, corroded or worn out | Repair or replace cables
Starter faulty | Replace
Starter keeps running | Starter | Replace
Ignition switch | Replace
Starter spins but engine will not crank | Short in wiring | Repair wiring
Pinion gear teeth broken or Starter | Replace
Ring gear teeth broken | Replace fly wheel or torque converter