SsangYong Rexton. Service manual — part 424
M161 ENGINE CONTROLS 1F2-11
SSANGYONG Y200
YAD1F0E0
Failure
Code
Description
Trouble Area
Maintenance Hint
No ignition voltage
output
(No. 1 ignition coil)
No ignition voltage
output
(No. 2 ignition coil)
Malfunction of ignition circuit
Primary current values or
secondary short circuit
•
Inspection the ECM pin 71 and 72 about
short circuit or open with bad contact
•
Inspection the power source to ignition
coil
•
Inspection the ignition coil, high tension
cords etc.
•
Inspection the spark plug (wet, cracks,
wear, improper gap, burned electrodes,
heavy deposit)
•
Inspection the ECM
64
65
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.
SSANGYONG Y200
1F2-12 M161 ENGINE CONTROLS
CRANKSHAFT POSITION (CKP) SENSOR
YAA1F940
This Electronic Ignition (EI) system uses inductive or pick up 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 agap 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.
1 Crankshaft Position Sensor Connector
2 Bolt
3 Crankshaft Position Sensor
M161 ENGINE CONTROLS 1F2-13
SSANGYONG Y200
YAD1F120
Circuit Description
The 58X reference signal is produced by the CKP sensor. During one crankshaft revolution, 58 crankshaft pulses
will 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.
Notice: Measure the insulator resistance of the CKP sensor if out of the specified value.
Failure
Code
Description
Trouble Area
Maintenance Hint
Crankshaft position
sensor signal failure
(no engine revolution
signal)
Crankshaft position
sensor signal failure
(rpm > max. value)
Crankshaft position
sensor signal failure
(gap recognition failure)
Crankshaft position
sensor adaptation
failure
Even through cam position
recognition is normal, no
crankshaft position signal
recognition
When more than applicable
revolution values or
implausible to 60-2 teeth.
When implausible recogni-
tion of cam and crank angle
signal or intermittent sens-
ing the signal or error count
of undetected gap.
When faulty crank angle
sensor adaption
•
Monitoring the actual rpm through or
scan tool
•
Inspection the ECM pin 100, 99 about
short circuit with bad contact
•
Inspection the CKP sensor
•
Inspection the air gap between sensor
and drive plate
•
Inspection the drive plate (teeth condi-
tion)
•
Inspection the ECM
17
18
20
67
Specified Value
1,050 ~ 1,400
Ω
SSANGYONG Y200
1F2-14 M161 ENGINE CONTROLS
Crankshaft Position Sensor Output Wave Inspection
1. Measure the output wave between the ECM
terminals No. 99 and No. 100 using the scan tool or
the oscilloscope while engine cranking (start motor
activated).
Notice: Check the segment or crankshaft position
sensor and air gap if cannot get the output wave
as shown in the figure.
YAD1F130
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.
Notice: Measure the check and ground terminal of
the CKP sensor if out of the specified value.
Specified Value
>20 k
Ω
a Voltage
b Identifying the No. 1-2 Missing Teeth
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