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

Contents:

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

SymptomSuspect AreaRemedy
Engine will not start or is hard to start (Cranks OK)Ignition lock switchInspect ignition lock switch, or replace as required
Ignition coilInspect ignition coil, or replace as required
Spark plugsInspect spark plugs, or replace as required
Ignition wiring disconnected or brokenRepair wiring, or replace as required
Rough idle or stallsIgnition wiringRepair wiring, or replace as required
Ignition coilInspect ignition coil, or replace as required
Engine hesitates / poor accelerationSpark plugs and spark plug cablesInspect spark plugs / cable, or replace as required
Ignition wiringRepair wiring, or replace as required
Poor mileageSpark plugs and spark plug cablesInspect spark plugs / cable, or replace as required

Ignition Coil ➤

Spark Plug ➤

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: MDPS Assembly

- Removal 1.Disconnect the battery negative cable and wait for at least three minutes before beginning work. 2.Put a flat tool (Ø4mm) into a guide hole located in the bottom of steering wheel and press a spring.     • When put a tool into a hole, make sure not to damage an airbag cusion by a tool. 3.Turn a steering wheel anti-clockwise, so make a guide hole (A) shown on the rightside.

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

- Components Location 1. Mode control actuator - Description The mode control actuator is located at the heater unit.It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C control unit. Pressing the mode select switch makes the mode control actuator shift in order of Vent → Bi-Level → Floor → Mix.

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