2006 MERCEDES-BENZ SPRINTER Fuel

TEST ACTION APPLICABILITY
4NOTE: Prior to performing this test, be sure to check the Glow Plug Relay
operation. Refer to CHECKING GLOW PLUG OPERATION for the related
symptom(s).
Refer to the Service Information and check the Glow Plugs for proper operation.
Are the Glow Plugs operating properly?All
Ye s!Go To 5
No!Repair as necessary.
Perform NO START VERIFICATION - VER-1.
5 Inspect the fuel system lines for restrictions, leaks or other problems.
NOTE: Refer to the Service Information to ensure that the fuel system is
properly primed. An unprimed system or excessive air in the supply system
will cause a no-start condition.
Is there any evidence of problems?All
Ye s!Repair as necessary.
Perform NO START VERIFICATION - VER-1.
No!Go To 6
6 Refer to the Service Information and perform the fuel pressure test.
Is the fuel pressure within specification?All
Ye s!Go To 7
No!Repair as necessary.
Perform NO START VERIFICATION - VER-1.
7 Inspect the fuel supply for contamination.
Is the fuel contaminated?All
Ye s!Refer to the Service Information to remove and replace fuel
throughout the fuel system.
Perform NO START VERIFICATION - VER-1.
No!Go To 8
8 Turn the ignition off.
Using the DRBIIItlab scope, backprobe the CMP Sensor Signal circuit at the ECM
harness connector.
Start the engine, if the engine will not start, crank the engine for several seconds
while monitoring the DRBIIIt.
NOTE: Refer to Charts and Graphs to view a correct CMP Sensor signal.
Does the DRBIIItdisplay a steady clean CMP Signal pattern?All
Ye s!Go To 9
No!Perform Test for DTC P2043-Camshaft Position Sensor Circuit
Static Plausibility.
Perform NO START VERIFICATION - VER-1.
240
DRIVEABILITY - DIESEL
*ENGINE CRANKS BUT WILL NOT START ÐContinued

ENGINE CONTROL MODULE C1 (OBD)CAV CIRCUIT FUNCTION
1 16BL FUEL INJECTOR NO. 1 HIGH-SIDE CONTROL
2 16BL/WT FUEL INJECTOR NO. 4 HIGH-SIDE CONTROL
3 16DG FUEL INJECTOR NO. 3 HIGH-SIDE CONTROL
4 20RD/WT FUEL PRESSURE SOLENOID 12 VOLT SUPPLY
8 18BL/GY FUEL TEMPERATURE SENSOR SIGNAL
10 20RD/YL ENGINE OIL SENSOR 5 VOLT SUPPLY
11 20GY/BL ENGINE OIL SENSOR SIGNAL
12 20BR/RD INTAKE PRESSURE SENSOR GROUND
13 20VT/DG INTAKE PRESSURE SENSOR SIGNAL
14 20BR/DG CAMSHAFT POSITION SENSOR GROUND
15 20DG/BK O2 1/1 PUMP CELL SIGNAL
20 18BK/YL WATER IN FUEL SENSOR SIGNAL
21 18BK/RD CRANKCASE HEATER SIGNAL
25 16BK FUEL INJECTOR NO. 2 HIGH-SIDE CONTROL
26 16BK/WT FUEL INJECTOR NO. 5 HIGH-SIDE CONTROL
28 18RD/BK FUEL QUANTITY SOLENOID 12 VOLT SUPPLY
31 20YL/BL MASS AIR FLOW SENSOR GROUND
32 18DG/BK FUEL TEMPERATURE SENSOR GROUND
35 20BR/BK SENSOR GROUND
36 20VT/RD INTAKE PRESSURE SENSOR 5 VOLT SUPPLY
37 20RD/BL CAMSHAFT POSITION SENSOR 5 VOLT SUPPLY
38 20YL/GY CAMSHAFT POSITION SENSOR SIGNAL
39 20GY O2 1/1 SENSOR CELL SIGNAL
40 20GY/WT O2 1/1 VIRTUAL GROUND
49 16BK/VT FUEL INJECTOR NO. 4 LOW-SIDE CONTROL
50 16BK/DG FUEL INJECTOR NO. 3 LOW-SIDE CONTROL
51 16BK/YL FUEL INJECTOR NO. 5 LOW-SIDE CONTROL
52 20BK/WT FUEL PRESSURE SOLENOID CONTROL
55 18BR WATER IN FUEL SENSOR GROUND
56 20BR/WT ENGINE COOLANT TEMPERATURE SENSOR GROUND
57 20DG/RD ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
59 20DG/VT FUEL PRESSURE SENSOR SIGNAL
61 20BR/VT MASS AIR FLOW SENSOR 5 VOLT SUPPLY
62 20DG/YL O2 1/1 PUMP CELL CONTROL
72 20GY/BL O2 1/1 HEATER CONTROL
73 16BK/RD FUEL INJECTOR NO. 1 LOW-SIDE CONTROL
74 16BK/BL FUEL INJECTOR NO. 2 LOW-SIDE CONTROL
76 18BR/YL FUEL QUANTITY SOLENOID CONTROL
79 18BR/RD WATER IN FUEL SENSOR 12 VOLT SUPPLY
84 20BR/GY FUEL PRESSURE SENSOR GROUND
85 20YL/DG MASS AIR FLOW SENSOR SIGNAL
86 20RD/DG FUEL PRESSURE SENSOR 5 VOLT SUPPLY
87 20DG/WT CRANKSHAFT POSITION SENSOR SIGNAL NO. 1
88 20DG CRANKSHAFT POSITION SENSOR SIGNAL NO. 2
90 20DG/WT EGR VALVE CONTROL
91 18BK/BR CRANKCASE HEATER GROUND
93 16YL/DG BOOST PRESSURE SERVOMOTOR CONTROL
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CONNECTOR PINOUTS

ENGINE CONTROL MODULE C2 (OBD)CAV CIRCUIT FUNCTION
1 16BK/RD FUSED ENGINE CONTROL RELAY OUTPUT
2 14BR GROUND
3 14BK/BL FUSED ENGINE CONTROL RELAY OUTPUT
4 14BR GROUND
5 14BK/BL FUSED ENGINE CONTROL RELAY OUTPUT
6 14BR GROUND
7 18RD S/C SWITCH 12 VOLT SUPPLY
8 18BR/WT HIGH IDLE ON SIGNAL
10 18WT/RD BOOST PRESSURE SENSOR 5 VOLT SUPPLY
11 18WT/DG BOOST PRESSURE SENSOR SIGNAL
12 18BR/WT SENSOR GROUND
13 18GY/DG ACCEL PEDAL POSITION SENSOR SIGNAL NO. 2
14 18BR/GY ACCEL PEDAL POSITION SENSOR GROUND NO. 2
17 18BR/DG KICKDOWN SWITCH SIGNAL
18 20DG/YL ENGINE RPM
19 18BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
24 18BL/RD ACCEL PEDAL POSITION SENSOR 5 VOLT SUPPLY
25 18BL/DG ACCEL PEDAL POSITION SENSOR SIGNAL NO. 1
26 18BR/BL ACCEL PEDAL POSITION SENSOR GROUND NO. 1
28 18BR/DG INTAKE AIR TEMPERATURE SENSOR GROUND
31 20BL/YL K-ECM
32 20DG ENHANCED ACCIDENT REPORT DRIVER
36 18VT IGNITION SWITCH OUTPUT (START)
37 18DG ACCEL/SET SIGNAL
38 18BK VERIFICATION SIGNAL
42 18DG/WT INTAKE AIR TEMPERATURE SENSOR SIGNAL
43 18BK/RD GLOW PLUG MODULE CONTROL
44 18YL/BL ENGINE CONTROL RELAY CONTROL
50 18YL DECEL/SET SIGNAL
51 18GY OFF SIGNAL
52 18BL RESUME SIGNAL
53 20DG/WT CAN C BUS (+)
54 20DG CAN C BUS (-)
55 18BR/RD FUEL PUMP RELAY CONTROL
58 18VT/DG STARTER MOTOR RELAY CONTROL
ENGINE COOLANT TEMPERATURE SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20BR/WT ENGINE COOLANT TEMPERATURE SENSOR GROUND
2 20DG/RD ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
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CONNECTOR PINOUTS

ENGINE OIL SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20GY/BL ENGINE OIL SENSOR SIGNAL
2 20BR/BK SENSOR GROUND
3 20RD/YL ENGINE OIL SENSOR 5 VOLT SUPPLY
FUEL INJECTOR NO. 1 - BLACKCAV CIRCUIT FUNCTION
1 14BK/BL (EXCEPT OBD) FUEL INJECTOR NO. 1 CONTROL
1 16BK/RD (OBD) FUEL INJECTOR NO. 1 LOW-SIDE CONTROL
2 14BK (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 1
2 16BL (OBD) FUEL INJECTOR NO. 1 HIGH-SIDE CONTROL
FUEL INJECTOR NO. 2 - BLACKCAV CIRCUIT FUNCTION
1 14BK/VT (EXCEPT OBD) FUEL INJECTOR NO. 2 CONTROL
1 16BK/BL (OBD) FUEL INJECTOR NO. 2 LOW-SIDE CONTROL
2 14BL (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 2
2 16BK (OBD) FUEL INJECTOR NO. 2 HIGH-SIDE CONTROL
FUEL INJECTOR NO. 3 - BLACKCAV CIRCUIT FUNCTION
1 14BK/RD (EXCEPT OBD) FUEL INJECTOR NO. 3 CONTROL
1 16BK/DG (OBD) FUEL INJECTOR NO. 3 LOW-SIDE CONTROL
2 14BK (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 1
2 16DG (OBD) FUEL INJECTOR NO. 3 HIGH-SIDE CONTROL
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CONNECTOR PINOUTS

FUEL INJECTOR NO. 4 - BLACKCAV CIRCUIT FUNCTION
1 14BK/YL (EXCEPT OBD) FUEL INJECTOR NO. 4 CONTROL
1 16BK/VT (OBD) FUEL INJECTOR NO. 4 LOW-SIDE CONTROL
2 14BK (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 1
2 16BL/WT (OBD) FUEL INJECTOR NO. 4 HIGH-SIDE CONTROL
FUEL INJECTOR NO. 5 - BLACKCAV CIRCUIT FUNCTION
1 14BK/DG (EXCEPT OBD) FUEL INJECTOR NO. 5 CONTROL
1 16BK/YL (OBD) FUEL INJECTOR NO. 5 LOW-SIDE CONTROL
2 14BL (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 2
2 16BK/WT (OBD) FUEL INJECTOR NO. 5 HIGH-SIDE CONTROL
FUEL PRESSURE SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20BR/GY FUEL PRESSURE SENSOR GROUND
2 20DG/VT FUEL PRESSURE SENSOR SIGNAL
3 20RD/DG FUEL PRESSURE SENSOR 5 VOLT SUPPLY
FUEL PRESSURE SOLENOIDCAV CIRCUIT FUNCTION
1 20BK/WT FUEL PRESSURE SOLENOID CONTROL
2 20RD/WT FUEL PRESSURE SOLENOID 12 VOLT SUPPLY
FUEL PUMP (OBD)CAV CIRCUIT FUNCTION
1 14BK FUEL PUMP RELAY OUTPUT
2 14BR GROUND
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CONNECTOR PINOUTS

FUEL PUMP RELAY (OBD)CAV CIRCUIT FUNCTION
30 14RD/BK FUSED B(+)
85 18BR/RD FUEL PUMP RELAY CONTROL
86 18BK/RD FUSED ENGINE CONTROL RELAY OUTPUT
87 14BK FUEL PUMP RELAY OUTPUT
87A - -
FUEL QUANTITY CONTROL VALVE (OBD)CAV CIRCUIT FUNCTION
1 20BK/WT FUEL QUANTITY SOLENOID CONTROL
2 18RD/BK FUEL QUANTITY SOLENOID 12 VOLT SUPPLY
FUEL TEMPERATURE SENSORCAV CIRCUIT FUNCTION
1 18DG/BK FUEL TEMPERATURE SENSOR GROUND
2 18BL/GY FUEL TEMPERATURE SENSOR SIGNAL
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CONNECTOR PINOUTS

FUSED IGNITION SWITCH RUN-START RELAY (RELAY BLOCK)CAV CIRCUIT FUNCTION
30 14RD FUSED B(+)
85 18BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
86 16BR GROUND
87 14BK/YL FUSED IGNITION SWITCH RUN-START RELAY OUTPUT
87A --
SPEED CONTROL SWITCHCAV CIRCUIT FUNCTION
1 18GY OFF SIGNAL
2 18BK VERIFICATION SIGNAL
3 18BL RESUME SIGNAL
4 18YL DECEL/SET SIGNAL
5 18DG ACCEL/SET SIGNAL
6 18RD S/C SWITCH 12 VOLT SUPPLY
WATER IN FUEL SENSOR - BLACKCAV CIRCUIT FUNCTION
1 18BR WATER IN FUEL SENSOR GROUND
2 18BR/RD WATER IN FUEL SENSOR 12 VOLT SUPPLY
3 18BK/YL WATER IN FUEL SENSOR SIGNAL
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CONNECTOR PINOUTS

GROUP TAB LOCATOR
Introduction
0Lubrication & Maintenance
2Suspension
3Differential & Driveline
5Brakes
7Cooling
8AAudio/Video
8BChime/Buzzer
8EElectronic Control Modules
8FEngine Systems
8GHeated Systems
8HHorn
8IIgnition Control
8JInstrument Cluster
8LLamps
8NPower Systems
8ORestraints
8PSpeed Control
8QVehicle Theft Security
8RWipers/Washers
8WWiring
9Engine
11Exhaust System
13Frame & Bumpers
14Fuel System
19Steering
21Transmission
22Tires/Wheels
23Body
24Heating & Air Conditioning
25Emissions Control
Component and System Index
Service Manual Comment Forms (Rear of Manual)