SsangYong Korando II (1996-2006 year). Manual — part 110
1F2 -- 18 M161 ENGINE CONTROLS
DAEWOO MY_2000
IGNITION SYSTEM
This ignition system does not use a conventional distributor and coil. It uses a crankshaft position sensor input to the
Engine Control Module (ECM). The ECM then determines Electronic Spark Timing (EST) and triggers the electronic
ignition system ignition coil.
This type of distributorless ignition system uses a ‘‘waste spark” method of spark distribution. Each cylinder is paired
with the cylinder that is opposite it (2--3 or 1--4). The spark occurs simultaneously in the cylinder coming up on the
compression stroke and in the cylinder coming up on the exhaust stroke. The cylinder on the exhaust stroke requires
very little of the available energy to fire the spark plug. The remaining energy is available to the spark plug in the cylin-
der on the compression stroke.
These systems use the EST signal from the ECM to control the EST. The ECM uses the following information:
D
Engine load (mass air flow sensor).
D
Engine temperature.
D
Intake air temperature.
D
Crankshaft position.
D
Engine speed (rpm).
YAA1F910
M161 ENGINE CONTROLS 1F2 -- 19
DAEWOO MY_2000
BLANK
1F2 -- 20 M161 ENGINE CONTROLS
DAEWOO MY_2000
IGNITION COIL
YAA1F920
The Electronic Ignition (EI) system ignition coil is located on the cylinder head cover. The double ended coils receive
the signal for the Engine Control Module (ECM) which controls the spark advance.
Each EI system ignition coil provides the high voltage to two spark plugs simultaneously;
T1/1: cylinder 1 and 4
T1/2: cylinder 2 and 3
The EI system ignition coil is not serviceable and must be replaced as an assembly.
M161 ENGINE CONTROLS 1F2 -- 21
DAEWOO MY_2000
KAB1F420
Failure
Code
Description
Trouble Area
Maintenance Hint
64
No ignition voltage
output (No. 1 ignition
coil)
Malfunction of ignition circuit
Primary current values or
D
Inspection the ECM pin 70 and 71
about short circuit or open with bad
contact
D
Inspection the power source to ignition
coil
D
Inspection the ignition coil high
65
No ignition voltage
output (No. 2 ignition
coil)
Primary current values or
secondary short circuit
D
Inspection the ignition coil, high
tension cords etc.
D
Inspection the spark plug (wet, cracks,
wear, improper gap, burned
electrodes, heavy deposit)
D
Inspection the ECM
Circuit Description
The Electronic Ignition (EI) system uses a waste spark method of spark distribution. The Crankshaft Position (CKP)
sensor sends reference pulses to the ECM. The ECM then triggers the EI system ignition coils. Once the ECM triggers
the EI system ignition coils both of the connected spark plugs fire at the same time. One cylinder is on its compression
stroke at the same time that the other is on the exhaust stroke, resulting in lower energy needed to fire the spark plug in
the cylinder on its exhaust stroke.
This leaves the remainder of the high voltage to be used to fire the spark plug in the cylinder on its compression stroke.
Since the CKP sensor is in a fixed position, timing adjustments are not possible or needed.
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