TIAGO

1.2L REVOTRON ENGINE

158

I. Ignition Coil



Component Details :

An ignition coil

(also called a spark coil) is an

induction coil in an automobile's ignition system

which transforms the battery's low voltage to the

thousands of volts needed to create an electric

spark in the spark plugs to ignite the fuel. . Ignition

coil is mounted on cylinder head cover and

directly connected on spark plug.



Component Location :



Preliminary Checks :

1. Loose/ Damaged Connections between

Ignition coil A and EMS ECU.

2. Check for back out of pins at both Ignition

Coil connector and ECU connector.

3. Check for damage of pins at both Ignition

Coil connector and ECU connector.



Connector View :



Connector Details:

Connector

Description

Coil

- N/A

+ B



Component Specification :

Ignition coil is mounted on cylinder head cover

and directly connected to spark plug to have the

shortest length of high tension cable connected to

spark plugs so as to reduce the level of

electromagnetic radiation from HT cables and

possible interference to ECU. The ignition coil

assembly - a duel spark coil with built-in power

switch with a 4 pin connector operates on

conventional principle of secondary voltage

generation due to induction. The primary

switching (ON/OFF) is triggered by ECU which

maintain constant dwell time, i.e. time required to

energize primary coil, throughout the operating

condition. An ignition coil (also called a spark coil)

is an induction coil in an automobile's ignition

system which transforms the battery's low voltage

to the thousands of volts needed to create an

electric spark in the spark plugs to ignite the fuel.



Sensor Stand alone Diagnosis :

Use multimeter to check primary coil resistance

between pin 4 and pin 2 (cylinder 3 and 2), or pin

4 and pin 1 (cylinder 1 and 4), which should be

0.6ohms.