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Home >> Mercedes Benz Truck >> 2010 >> Sprinter 3500 Cab (906.155) V6-3.0L DSL Turbo (642.898) >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> GF07.16-D-6000HU Component Description For CDI Control Unit

GF07.16-D-6000HU Component Description For CDI Control Unit




GF07.16-D-6000HU Component Description For CDI Control Unit

- with CODE (MG5) Engine OM 642 DE 30 LA, 140 kW (190 hp) 3800 rpm
- with CODE (MH1) Low-emission engine EPA 10/CARB
- with CODE (ZU7) National version for Canada
- with CODE (ZU8) National version for USA







N3/30 CDI control unit

Location
The CDI control unit is located in the front right of the engine compartment.

Task
The CDI control unit creates the engine control in electrical connection with the sensors and actors of engine 642.
The following systems and functions are controlled and coordinated by the CDI control unit according to input signals:
- Fuel supply
- Preheating plant control
- Injected quantity control
- Diagnosis and fault storage
- Drive authorization system and immobilizer
- Torque interface
- Alternator interface
- Exhaust gas recirculation (EGR)
- Exhaust gas cleaning

The CDI control unit has an internal atmospheric pressure sensor.

Input and output signals
The following input signals are evaluated by the engine control and issued in the respective output signals:
- Direct input signals
- Direct output signals
- Drive LIN (LIN C1) signals
- Engine compartment CAN (CAN C) input signals
- Drive train sensor CAN (CAN I) input signals
- Engine compartment CAN output signals
- Drive train sensor CAN output signals

Direct input signals
- Circuit 15
- Circuit 30
- Circuit 31
- Circuit 87
- Hot film mass air flow sensor (B2/14)
- Intake air temperature sensor (B2/14b1)
- Rail pressure sensor (B4/17)
- Boost pressure sensor (B5/8)
- Camshaft sensor (B6/24)
- Temperature sensor upstream of SCR catalytic converter (B16/12)
- Coolant temperature sensor (B11/19)
- Charge air temperature sensor (B17/15)
- Temperature sensor upstream of catalytic converter (B19/18)
- Temperature sensor upstream of diesel particulate filter (B19/19)
- Temperature sensor upstream of turbocharger (B16/11)
- Intake manifold pressure sensor (B28/19)
- Diesel particulate filter differential pressure sensor (B28/20)
- Accelerator pedal module (B37/3)
- Fuel temperature sensor (B50/6)
- Left EKAS end position measurement sensor (B90/2)
- Right EKAS end position measurement sensor (B90/3)
- Exhaust back pressure sensor (B60/4)
- Fuel filter heater with water level sensor (R53/1)
- Oxygen sensor (B85/3)
- Crankshaft sensor (B70/1)
- Engine oil sensor (B40/8)
- Actual value potentiometer for throttle valve (M16/48r1)
- Actual value potentiometer for drive (M16/48r2)
- Actual value potentiometer (sliding contact 1) (M16/48r3)
- Actual value potentiometer (sliding contact 2) (M16/48r4)
- Crash signal from AB Lowliner control unit (N2/14), except code (SH6) Thorax bag for driver (in the backrest), except code (SH7) Thorax bag for driver and front passenger (in the backrest), except code (SH9) Window bag for driver and front passenger or AB Lowliner control unit (N2/15), with code (SH6) Thorax bag for driver (in the backrest), with code (SH7) Thorax bag for driver and front passenger (in the backrest), with code (SH9) Window bag for driver and front passenger

Direct output signals
- Viscous fan (A27/2)
- Actuator motor (M16/48m1) for the throttle flap positioner (M16/48)
- Fuel pump relay (K40/9k3)
- Circuit 50 starter relay (K40/9k5)
- Engine timing circuit 87 relay (K40/9k7)
- Intake port shutoff actuator (M72/2)
- Vent line heater element (R39/4)
- Accelerator pedal module
- Exhaust gas recirculation positioner (Y27/17)
- Pressure regulator valve (Y74/6)
- Cylinder 1 injector (Y76/18)
- Cylinder 2 injector (Y76/19)
- Cylinder 3 injector (Y76/20)
- Cylinder 4 injector (Y76/21)
- Cylinder 5 injector (Y76/22)
- Cylinder 6 injector (Y76/23)
- Boost pressure actuator (Y77/8)
- Quantity control valve (Y94/4)

Drive LIN signals
- ALT with LIN bus (G2/7), communication
- Glow output stage (N14/3), communication

Engine compartment-CAN input signals
Instrument cluster (A1)
- Fuel reserve signal

AB Lowliner control unit, except code (SH6) Thorax bag for driver (in the backrest), except code (SH7) Thorax bag for driver and front passenger (in the backrest), except code (SH9) Window bag for driver and front passenger or AB Lowliner control unit, with code (SH6) Thorax bag for driver (in the backrest), with code (SH7) Thorax bag for driver and front passenger (in the backrest), with code (SH9) Window bag for driver and front passenger
- Crash signal

ETC [EGS] control unit (N15/3)
- Drive position
- Transmission mode
- Actual gear, target gear

Engine torque reduction request
- Starter enable in selector lever position "P", "N"
- Engine idle specified speed for actuation of torque converter lockup clutch
- Status of torque converter lockup clutch
- Limp-home mode for electronic transmission control (EGS)

KLA control and operating unit (S98), with code (HH9) Regulated air conditioning (Tempmatic)
- Request for fan nominal rotational speed of A/C 1 additional fan (M4/13) and A/C 2 additional fan (M4/14)
- Air conditioning, status

EIS [EZS] control unit (N73)
- Start enable by the drive authorization system (FBS)

PSM control unit (N26/15) (with code (ED5) Parameterizable special module (PSM) or code (ED8) Preinstallation for a parameterizable special module (PSM))
- Working speed control, adaptation of the engine rpm

ESP control unit (N30/4)
- Vehicle speed
- Wheel speed signal
- Brake recognition
- Cruise control request, with code (MS1) CC
- Engine torque request

Drive train sensor CAN input signals
AdBlue(R) control unit (N141)
- Injected reduction agent quantity for nitrogen oxides (NOx) reduction
- Reduction agent quantity to be injected for cooling the AdBlue(R) injection valve
- Fill level status in the AdBlue(R) tank
- Diagnosis communication

NOx sensor control unit upstream of SCR CAT (A97/1) and NOx sensor control unit downstream of SCR CAT (A97/2)
- NOx concentration in the exhaust
- Oxygen concentration in the exhaust
- Diagnosis communication

Engine compartment CAN output signals
Instrument cluster
- Messages in the display (A1p1)
- Actuation of CHECK ENGINE indicator lamp (A1e41)
- Circuit 61 signal

EIS control unit
- Query regarding start enable by the FBS

EGS control unit
- Requests for shift line displacement for CAT heating Switching request
- Engine torque
- Engine coolant temperature
- Engine speed
- Engine load
- Kickdown
- Engine speed limitation active
- Limp-home mode engine control

PSM control unit () (with code (ED5) Parameterizable special module (PSM) or code (ED8) Preinstallation for a parameterizable special module (PSM))
- Working speed control, feedback

If the CDI control unit receives the signal "circuit 15 OFF" a processor run-on of approx. 4 seconds is started. However, it may also last for several minutes due to various functions (such as OBD, FBS).

Drive train sensor CAN output signals
AdBlue(R) control unit
- Request from reduction agent injection
- Specification of the reduction agent quantity to be injected
- Specification of the run-on period of the control units
- Diagnosis communication

NOx sensor control unit upstream of SCR CAT and NOx sensor control unit downstream of SCR CAT
- Diagnosis communication
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