ignition SSANGYONG KORANDO 1997 Service Owner's Manual

1F1 -- 20 M162 ENGINE CONTROLS
D AEW OO M Y_2000
IGNITION COIL
YAA1F240
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 2 and 5
T1/2: cylinder 3 and 4
T1/3: cylinder 1 and 6
The EI system ignition coil is not serviceable and must be replaced as an assembly.

M162 ENGINE CONTROLS 1F1 -- 21
D AEW OO M Y_2000
KAB1F140
Failure
CodeDescriptionTrouble AreaMaintenance Hint
64
No ignition voltage
output (No. 1 ignition
coil)DInspectiontheECMpin70(71and72)
about short circuit or open with bad
contact
DInspectionthepowersourcetoignition
65
No ignition voltage
output (No. 2 ignition
coil)Malfunction of ignition circuit
Primary current values or
secondary short circuit
DInspectionthepowersourcetoignition
coil
DInspection the ignition coil, high
tension cords etc.
DInspectionthesparkplug(wetcracks
66
No ignition voltage
output (No. 3 ignition
coil)DInspection the spark plug (wet, cracks,
wear, improper gap, burned
electrodes, heavy deposit)
DInspection 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.

1F1 -- 22 M162 ENGINE CONTROLS
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CRANKSHAFT POSITION (CKP) SENSOR
YAA1F250
This Electronic Ignition (EI) system uses inductive or pickup type magnetic Crankshaft Position (CKP) sensor. The
CKP sensor is located in the opposite side of the crankshaft pulley and triggers the pick-up wheel teeth which is
equipped 60 -- 2 teeth with a gap of 2 teeth at 360 degree spacing. This sensor protrudes through its mount to within 1.1
±0.14 mm.
The output of the sensor is a sinusoidal signal. Each tooth of the pick-up 60 -- 2 wheel generates a positive half wave.
The Engine Control Module (ECM) uses this sensor signal to generate timed ignition and injection pulses that it sends
to the ignition coils and to the fuel injectors.

M162 ENGINE CONTROLS 1F1 -- 23
D AEW OO M Y_2000
KAB1F150
Failure
CodeDescriptionTrouble AreaMaintenance Hint
17
Crankshaft position
sensor signal failure (no
engine revolution signal)Even through cam position
recognition is normal, no
crankshaft position signal
recognition
DMonitoring the actual rpm through or
scan tool
18
Crankshaft position
sensor signal failure
(rpm > max. value)When more than applicable
revolution values or
implausibleto60–2teeth
scantool
DInspection the ECM pin 100, 99 about
short circuit with bad contact
DInspection the CKP sensor
20
Crankshaft position
sensor signal failure
(gap recognition failure)
When implausible recognition
of cam and crank angle signal
or intermittent sensing the
signal or error count of
undetected gap.
p
DInspection the air gap between sensor
and drive plate
DInspection the drive plate (teeth
condition)
DInspection the ECM
67Crankshaft position
sensor adaptation failureWhen faulty crank angle
sensor adaption
p
Circuit Description
The 58X reference signal is produced by the CKP sensor. During one crankshaft revolution, 58 crankshaft pulseswill
be produced. The ECM uses the 58X reference signal to calculate engine rpm and CKP. The ECM constantly monitors
the number of pulses on the 58X reference circuit and compares them to the number of Camshaft Position (CMP)
signal pulses being received. If the ECM receives and incorrect number of pulses on the 58X reference circuit, this
failure code will set.
Crankshaft Position Sensor Resistance Inspection
1. Disconnect the coupling “E” of ECM while the ignition switch is in “OFF” position.
2. Measure the resistance between the coupling terminal pin No. 99 and No. 100 using a multimeter.
Specified Value
1,050 ~ 1,400Ω
Notice:Measure the insulator resistance of the CKP sensor if out of the specified value.

1F1 -- 24 M162 ENGINE CONTROLS
D AEW OO M Y_2000
Crankshaft Position Sensor Output Wave Inspection
1. Measure the output wave between the ECM termi-
nals No. 99 and No. 100 using the scan tool or the os-
cilloscope whileengine cranking (start motor
activated).
Notice:Check the segment or crankshaft position sen-
sor and air gap if cannot get the output wave as shown in
the figure.
YAA1F270
Crankshaft Position Sensor Insulator Resistance Inspection
1. Disconnect the coupling from ECM while the ignition switch is in “OFF” position.
2. Measure the resistance between the coupling terminal pin No. 100 and No. 69 using a multimeter.
Specified Value
>20 kΩ
Notice:Measure the check and ground terminal of the CKP sensor if out of the specified value.

1F1 -- 28 M162 ENGINE CONTROLS
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Camshaft Position Sensor Output Wave Inspection
1. Measure the output wave between the ECM termi-
nals No. 104 and No. 106 using the scan tool or the
oscilloscope whileengine speed is at idle.
Notice:Replace the CAM sensor if cannot get the out-
put wave as shown in the figure.
KAA1F0O0
Camkshaft Position Sensor Power Supply Inspection
1. Disconnect the CMP sensor Connector.
2. Measure the resistance between the No. 1 and No. 3 pin of the CMP sensor connector while the ignition switch is in
“ON” position.
Specified Value
11 ~ 14 v
Notice:If the measured value is not within the specified value, check the cable.

1F1 -- 30 M162 ENGINE CONTROLS
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CAMSHAFT ACTUATOR
YAA1F300
When the engine is running, the camshaft actuator rotates the intake camshaft hydraulically and mechanically relative
to the camshaft sprocket by 32°crank angle to the “advanced” position and back to the “retard” position.
The camshaft actuator is actuated electro-mechanically by the Engine Control Module (ECM). The positioning time of
apporx. 1 second is dependent on the engine oil pressure at the camshaft actuator and on the oil viscosity and oil
temperature, respectively.
The camshaft indicator on the camshaft sprocket provides the camshaft rotational speed to the position sensor as an
input parameter for the engine ignition control unit.
Operation Condition of Camshaft Actuator
Engine RPMCamshaft PositionEffect
Engine stopRetard--
0 ~ 1,500 rpmRetard
Idle speed is improved
Blow-by gas is decreased
Valve overlap is decreased
1,500 ~ 4,300 rpmAdvanced
Torque is increased
Fuel loss is decreased
NOx is decreased
Above 4,300 rpmRetardEngine overrun is prohibited

1F1 -- 32 M162 ENGINE CONTROLS
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KNOCK SENSOR (KS)
YAA1F320
The Knock Sensor (KS) detects abnormal knocking in the engine. The two KS are mounted in the engine block near
the cylinders. The sensors produce an output voltage which increases with the severity of the knock. This signal is sent
to the Engine Control Module (ECM) via a shielded cable. The ECM then adjusts the ignition timing to reduce the spark
knock.

M162 ENGINE CONTROLS 1F1 -- 33
D AEW OO M Y_2000
KAB1F170
Failure
CodeDescriptionTrouble AreaMaintenance Hint
56No. 1 knock sensor
signal failure
When recognition in more
than control gain threshold at
normal operational condition
of other system during over
75 and 3,000 rpm running
area (cylinder 1, 2, 3)DInspection the ECM pin 118, 117 about
short circuit or open with bad contact
DInspection the KS 1 malfunction
DInspection the ECM
57No. 2 knock sensor
signal failure
When recognition in more
than control gain threshold at
normal operational condition
of other system during over
75 and 3,000 rpm running
area (cylinder 4, 5, 6)DInspection the ECM pin 115, 114 about
short circuit or open with bad contact
DInspection the KS 2 malfunction
DInspection the ECM
Circuit Description
The KS system is used to detect engine detonation, allowing the ECM to retard the ignition control spark timing based
on the KS signal being received. The KS signal’s amplitude and frequency depend upon the amount of knock being
experienced. The ECM monitors the KS signal and can diagnose the KS sensor and circuitry.
Knock Sensor Resistance Inspection
1. Disconnect the coupling from ECM while the ignition switch is in “OFF” position.
2. Measure the resistance between the coupling terminal pin No. 118 and No. 117 and terminal pin No. 115 and No.
114usingamultimeter.
Specified Value
>10 MΩ
Notice:Replace the KS if the measured values is out of the specified values. Check the connector and wire connec-
tion between ECM and the KS if the measured values are normal.

M162 ENGINE CONTROLS 1F1 -- 35
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KAB1F180
Failure
CodeDescriptionTrouble AreaMaintenance Hint
68Random / Multiple
Misfire
When detection misfire of
multiple cylinder for source of
over the emission threshold or
catalyst damage
DInspection the ignition system
DInspection the injection system
DInspection the fuel pressure
DInspection the compression pressure
DInspection the valve timing or
clearance
DInspection the air flow sensor
DInspection the crankshaft position
sensor and air gap
DInspection the engine wiring system
DInspection the Engine Control Module
(ECM)
Circuit Description
The ECM monitors the crankshaft and camshaft positions to detect if the engine is misfiring. The ECM looks for a quick
drop in crankshaft speed. Misfire multiple cylinder is monitored by engine roughness measuring. The actual roughness
value is compared with the actual (emission and catalyst damage) threshold.