Hyundai Sonata: Troubleshooting
Trouble Shooting
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 |
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 |
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 |
Specifications
Specifications
Ignition System
Items
Specifications
Ignition coil
Primary resistance
0.62 В± 10 % (Ω)
Secondary ...
Special Service Tools
Special Service Tools
Tool (Number and name)
Illustration
Use
Alternator pulley remover wrench
(09373-27000)
Remova ...
See also:
Engine Control Module (ECM). Schematic Diagrams
ECM Terminal And Input/Output signal
ECM Terminal Function
Connector [CHG-AG]
Pin
No.
Description
Connected to
1
I ...
To increase cruise control set speed
Follow either of these procedures:
Push the RES+ switch and hold it. Your vehicle will accelerate. Release
the switch at the speed you want.
Push the RES+ switch and release it immediatel ...
Preparation Of Tools And Measuring Equipment
Be sure that all necessary tools and measuring equipment
are available starting work.
Special Tools
Use special tools when they are required.
Removal Of Parts
First find th ...