DaimlerChrysler SPRINTER2006 Service Manual page 50

8E - 4 ELECTRONIC CONTROL MODULES
1 - MASS AIR FLOW SENSOR
2 - TURBOCHARGER SERVO MOTOR
3 - CAMSHAFT POSITION SENSOR
4 - ENGINE OIL SENSOR
5 - CRANKSHAFT POSITION SENSOR
6 - PRESSURE REGULATOR VALVE
7 - EGR VALVE
ECM Control Strategy The engine control module
is involved with a variety of functions such as: (Fig.
3)
• Individual injector activation
• Engine idle speed control to ensure smooth
engine idling independent of engine load
• Ride comfort function such as anti jerk control:
The CDI control module detects irregularities in
engine speed (resulting, for example, from load
changes or gear shift) from the signal supplied by the
crankshaft position sensor and reduces them by
adjusting the quantity injected into each of the cylin-
ders
• Constant RPM (high idle feature) for ambulance
vehicle bodies equipped with electrical appliances
• Starter control, immobilizer, cruise control, kick
down, air conditioner
• Maintenance computer ASSYST (optional)
• Glow plug for pre-heating, post heating and
intermittent heating
• Error code memory/diagnostics, communication
interface for diagnosis and handling the fault codes
• The maximum vehicle speed is programmable
from 19–82 m.p.h. The standard is 82 m.p.h.
Fig. 2 ECM
8 - CHARGE AIR PRESSURE SENSOR
9 - CHARGE AIR TEMPERATURE SENSOR
10 - COOLANT TEMPERATURE SENSOR
11 - FUEL RAIL PRESSURE SENSOR
12 - FUEL TEMPERATURE SENSOR
13 - FUEL QUANTITY CONTROL VALVE
14 - AIR INTAKE PRESSURE SENSOR
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