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1.2L REVOTRON ENGINE
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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 DETAIL
PINOUT DETAILS
PIN
DESCRIPTION
1
ECU
2
+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 3 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 3 and pin 1 which should be
0.6ohms.