SsangYong Rexton. Manual - part 401

SSANGYONG  Y200

1F1-16  M162 ENGINE CONTROLS

CAMSHAFT POSITION (CMP) SENSOR

YAD1F140

The Camshaft Position (CMP) sensor sends a CMP signal to the Engine Control Module (ECM). The ECM uses
this signal as a “synchronized pulse” to trigger the injectors in the proper sequence. The ECM uses the CMP
signal to indicate the position of the #1 piston during its power stroke. This allows the ECM to calculate true
sequential fuel injection mode of operation.

1 Camshaft Position Sensor Connector
2 Bolt

3 Camshaft Position Sensor
4 O-ring

M162 ENGINE CONTROLS  1F1-17

SSANGYONG  Y200

YAD1F150

Circuit Description

The CMP sensor sends a cam position signal to the ECM. If the cam position signal is lost while the engine is
running, the fuel injection system shifts to a calculated sequential fuel injection mode based on the last fuel
injection pulse, and the engine continuous to run.

Camshaft Position Sensor Signal Voltage Inspection

1. Measure the voltage between the ECM terminal No. 11 and No. 106 while the engine speed is at idle.

Failure

Code

Description

Trouble  Area

Maintenance Hint

Camshaft position

sensor signal : No. 1

cylinder recognition

failure

Camshaft position

sensor signal : No. 1

cylinder synchronization

failure

When no cam recognition

signal during TN 24 counts

more.

(maintain the constant low or

high level)

When synchronization fault of

cylinder 1

(TDC recognition)

•

Inspection the source voltage of CMP
sensor

•

Inspection the ECM pin 106, 104 about
short circuit or open with bad contact

•

Inspection the CMP sensor

•

Inspection the damage of sensor or
sprocket

•

Inspection the ECM

19

58

Specified Value

1.2 ~ 1.7 v

Notice: The signal voltage will be changed in the range of 1.2 ~ 1.7 v.

SSANGYONG  Y200

1F1-18  M162 ENGINE CONTROLS

Camshaft Position Sensor Output Wave
Inspection

1. Measure the output wave between the ECM

terminals No. 104 and No. 106 using the scan tool
or the oscilloscope while engine speed is at idle.

Notice: Replace the CAM sensor if cannot get the
out-put wave as shown in the figure.

YAD1F160

Camshaft Position Sensor Power Supply
Inspection

1. Disconnect the CMP sensor Connector.

2. Measure the voltage between the No. 1and 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.

SSANGYONG  Y200

1F1-20  M162 ENGINE CONTROLS

CAMSHAFT ACTUATOR

YAD1F170

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 RPM

Engine stop

0 ~ 1,500 rpm

1,500 ~ 4,300 rpm

Above 4,300 rpm

Camshaft Position

Retard

Retard

Advanced

Retard

Effect

-

Idle speed is improved

Blow-by gas is decreased

Valve overlap is decreased

Torque is increased

Fuel loss is decreased

NOx is decreased

Engine overrun is prohibited

1 Bolt
2 Camshaft Actuator
3 Bolt

4 Armature
5 Roll Pin
6 Nut