Hyundai Accent (HC): Engine Electrical System / Ignition System

Hyundai Accent (HC) (2017 - 2022) Service Manual / Engine Electrical System / Ignition System

Contents:

Description and Operation
Repair procedures
Troubleshooting
Ignition Coil
Spark Plug

Description and Operation

- Description Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are pre-pro grammed in the memory of the ECM (Engine Control Module).The engine operating conditions (speed, load, warm-up condition, etc.) are detected by the various sensors. Based on these sensor signals and the ignition timing data, signals to interrupt the primary current are sent to the ECM. The ignition coil is activated, and timing is controlled.

Repair procedures

- On-vehicle Inspection

Inspect ignition coil assembly and Perform spark test

1.Check for DTCs.

• If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC guide)

2.Check if sparks occur.

(1)Remove the engine cover.

(2)Remove the ignition coils.

(3)Using a spark plug wrench, remove the spark plugs.

(4)Disconnect the 4 injector connectors.

(5) Ground the spark plug to the engine.

(6)Check if sparks occur at each spark plug while engine is being cranked.

• Do not crank the engine for more then 5 seonds.

3. If sparks do not occur, perform the following test.

4.Using a spark plug wrench, install spark plugs.

5.Install the ignition coils.

6.Install the engine cover.

Troubleshooting

- Troubleshooting

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
Rough idle or stalls	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
Engine hesitates / poor acceleration	Ignition wiring	Repair wiring, or replace as required
Poor mileage	Spark plugs and spark plug cables	Inspect spark plugs / cable, or replace as required

Ignition Coil ➤

Spark Plug ➤

Battery

Ignition Coil

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: TPMS Sensor

- Description 1.General descriptionWU is a sensor placed in the tire that reports pressure and temperature.The WU is mounted inside the wheels, fixed to the valve. The angle between the valve and the housing of the WU is variable.This allows adaptation to various types of rims.The Wheel Unit is made of a PCB supporting the electronic hardware and encapsulated inside a housing which is potted with polyurethane.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Temperature Control Actuator

- Components Location 1. Temperature control actuator - Description The temperature control actuator is located at the heater unit. It regulates the temperature by the procedure as follows. The signal from the control unit adjusts the position of the temperature door by operating the temperature switch. Then the temperature will be regulated by the hot/cold air ratio decided by the position of the temperature door.

Description and Operation
Repair procedures
Troubleshooting
Ignition Coil
Spark Plug