SsangYong Rexton. 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