Hyundai Tucson: Ignition System / Ignition Coil

- Description The ignition coil is mounted on the top side of the cylinder head cover end. The ignition coil consists of the primary coil that receives battery power and the secondary coil that generates high voltage.When the current in the primary coil is cut off by the ignition signal of the ECM, the rapid change of the magnetic flux by the mutual induction action is induced to the secondary coil and high voltage is generated depending on the coil winding ratio.This high voltage generated from the secondary coil is caught in the spark plug gap and discharges as the electric field is destroyed to generate a spark. - Troubleshooting Connector assembly status test

1.Disconnect the ignition coil connectors (A) and reinstall it.

2.Remove the ignition coil form (A).

Test for changing position of each ignition coil A : Ignition coil w/ misfire codeB : Ignition coil w/o misfire code

   

• Do not move with spark plug at the same time (move the ignition coil only)

- Specification

Item	Specification
Rated Voltage (V)	13.5V
Secondary Coil [Engine 1000RPM standard]	Input voltage (V)	13.5V
	Dwell Time (ms)	4.0 - 4.6
	Spark current (mA)	Min. 90
	Spark duration time (ms)	Min. 2.0
Igniter voltage (V)		400 - 500
Pin		4

Item	Specification
Engine Speed (RPM)	1000	2000	3000	4000	5000	6000	7000
Dwell Time (ms)	4.7	4.7	4.1	3.4	3.1	2.8	2.7
Secondary Coil Voltage (kV)	41	41	41	40	38	36	35

- Circuit Diagram

- Ignition Coil Connector Terminal Function

Connector View

Ignition Coil Terminal Function

*Connected to number( ) : With IMMO or Smart Key[ ] : W/O IMMO or Smart KeyIgnition Coil #1 (Cylinder #1)

Pin No	Description	Connected to
1	Ground	Chassic
2	Ignition Coil #1 Control	ECM Connector (64) [41]
3	Ignition Coil #1/#4 Feedback	ECM Connector [17]
4	Battery Power (B+)	Main Relay

Ignition Coil #2 (Cylinder #2)

Pin No	Description	Connected to
1	Ground	Chassic
2	Ignition Coil #2 Control	ECM Connector (87) [18]
3	Ignition Coil #2/#3 Feedback	ECM Connector [40]
4	Battery Power (B+)	Main Relay

Ignition Coil #3 (Cylinder #3)

Pin No	Description	Connected to
1	Ground	Chassic
2	Ignition Coil #3 Control	ECM Connector (18) [87]
3	Ignition Coil #2/#3 Feedback	ECM Connector [40]
4	Battery Power (B+)	Main Relay

Ignition Coil #4 (Cylinder #4)

Pin No	Description	Connected to
1	Ground	Chassic
2	Ignition Coil #4 Control	ECM Connector (41) [64]
3	Ignition Coil #1/#4 Feedback	ECM Connector [17]
4	Battery Power (B+)	Main Relay

- Removal

1.Turn the ignition switch OFF and disconnect the battery (-) terminal.

2.Remove the engine cover.(Refer to Engine Mechanical System - "Engine Cover")

3.Disconnect the ignition coil connectors (A).

   

• When removing the ignition coil connector, pull the lock pin (A) and push the clip.

4.Remove the ignition coil form (A).

5.Remove the ignition coils (A).

Tightening torque :9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 Ib-ft)

- Installation

1.Install in the reverse order of removal.

- Cleaning Cleaning work is required to prevent the problem of contamination of the spark plug insulator by foreign substances attached to the bottom of the ignition coil boot.

1.Prepare the soft cloth.

2.Wipe the contaminants inside and outside the bottom of the ignition coil boot with the soft cloth as shown in the following figure.

   

• The cloth should be clean, free of contaminants, and soft enough to not damage the parts.