(2) Remove engine cover (Refer to 9 - ENGINE -
REMOVAL).
(3) Disconnect camshaft position sensor electrical
connector.
(4) Remove retaining bolt and remove sensor.
INSTALLATION
(1) Install camshaft position sensor and tighten
bolt.
(2) Reconnect electrical connector.
(3) Install engine cover (Refer to 9 - ENGINE -
INSTALLATION).
(4) Reconnect negative battery cable.
CRANKSHAFT POSITION
SENSOR
DESCRIPTION
The crankshaft position sensor is located at the left
rear of the engine just above the starter motor (Fig.
2). This sensor is used to detect engine speed.
OPERATION
The crankshaft position and engine speed are
detected contactlessly. The distance between the
crankshaft position sensor and the teeth of the
driven plate is fixed by the installation position.
When the crankshaft rotates, an alternating volt-
age is generated in the crankshaft position sensor by
the teeth of the driven plate.
In this case, the front edge of a tooth generates a
positive voltage pulse and the rear edge a negative
voltage pulse. The distance from the positive to the
negative voltage peak equals the length of a tooth.
The gap created by 2 missing teeth (arrow) has the
effect that no voltage is generated in the crankshaft
position sensor. This is analyzed in order to detect
the TDC position of cylinder 1
FUEL PRESSURE SENSOR
DESCRIPTION
The rail sensor monitors and passes on the current
rail pressure to the control module (Fig. 3). The non-
constant system pressure influences the position of
the sensor diaphragm which alters the sensors elec-
trical resistance.
OPERATION
The rail pressure sensor measures the current rail
pressure and supplies an appropriate voltage signal
to the Engine Control Module (ECM). The pressure
control valve is then actuated by the ECM through a
control loop until the desired rail pressure is reached.
Fig. 1 CAMSHAFT POSITION SENSOR LOCATION
1 - CAMSHAFT POSITION (CMP) SENSOR
2 - CYLINDER HEAD COVER
Fig. 2 SENSOR LOCATION
1 - CRANKSHAFT POSITION SENSOR
2 - SWIRL ACTUATOR
14a - 2 FUEL INJECTION WG
CAMSHAFT POSITION SENSOR (Continued)
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