Suzuki DF150 Service Manual page 69

3-10 ENGINE CONTROL SYSTEM
ECM cylinder identification:
Cylinders are identified by a calculation combined from two signals; one from the CKP sensor and one from
the CMP sensor.
TDC
#1 Cyl.
#3 Cyl.
#4 Cyl.
#2 Cyl.
CKP
sensor
signal
10˚
CMP
sensor #1
signal
CMP
sensor #2
(VVT) signal
Cm.: Compression,
CMP (Camshaft position) SENSOR #2
• For DF175 model:
CMP sensor #2 is mounted on the cylinder head cover with
trigger vanes pressed onto the end of the intake camshaft.
This sensor detects camshaft position.
• This sensor is the same type as the CMP sensor #1, and
inputs signals to ECM. This signal is used to control intake
camshaft valve timing through OCV (Oil control valve).
Ep.
TDC
Cm.
In.
Ex.
34-signals/crankshaft 1 rotation
[CMP sensor – 6 signals]
360˚ (Crankshaft 1 rotation)
360˚
Ep.: Explosion, Ex.: Exhaust,
Ex.
Ep.
TDC
Cm.
In.
[CMP sensor – 4 signals]
60˚
360˚ (Crankshaft 1 rotation)
In.: Intake, TDC: Top Dead Center
1
1. CMP sensor #1
2. CMP sensor #2
In.
Ex.
Ep.
TDC
Cm.
120˚
2