MERCEDES-BENZ SPRINTER 2006 Service Manual

TEST ACTION APPLICABILITY
5 Turn the ignition off.
Disconnect the Water In Fuel Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between the 12-volt supply circuit and the Water In Fuel
Sensor Signal circuit.
Is the resistance above 1000 ohms?All
Ye s!Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the Water In Fuel Sensor Signal circuit for a short to the
12-volt Supply circuit.
Perform ROAD TEST VERIFICATION - VER-2.
6 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance of the 12-Volt Supply circuit between the ECM harness
connector and the Water In Fuel Sensor harness connector.
Is the resistance below 10.0 ohms?All
Ye s!Go To 7
No!Repair the 12-Volt Supply circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
7 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance of the Sensor Ground circuit.
Is the resistance below 10.0 ohms?All
Ye s!Replace the Water In Fuel Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
8 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance of the Water In Fuel Sensor Signal circuit.
Is the resistance below 10.0 ohms?All
Ye s!Go To 9
No!Repair the Water In Fuel Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
9 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance between ground and the Water In Fuel Sensor Signal circuit.
Is the resistance above 1000 ohms?All
Ye s!Go To 10
No!Repair the Water In Fuel Sensor Signal circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
108
DRIVEABILITY - DIESEL
P2009-WATER IN FUEL SENSOR - WATER IN FUEL ÐContinued

TEST ACTION APPLICABILITY
10 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance between Sensor Ground and the Water In Fuel Sensor Signal
circuit.
Is the resistance above 1000 ohms?All
Ye s!Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the Water In Fuel Sensor Signal circuit for a short to the
Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
11WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No!Test Complete.
109
DRIVEABILITY - DIESEL
P2009-WATER IN FUEL SENSOR - WATER IN FUEL ÐContinued

Symptom List:
P2010-MASS AIR FLOW SENSOR NEGATIVE DEVIATION
P2010-MASS AIR FLOW SENSOR POSITIVE DEVIATION
P2068-MASS AIR FLOW SENSOR PLAUSIBILITY SIGNAL RATIO
TOO LARGE
P2068-MASS AIR FLOW SENSOR PLAUSIBILITY SIGNAL RATIO
TOO SMALL
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2010-MASS AIR FLOW SENSOR
NEGATIVE DEVIATION.
When Monitored and Set Condition:
P2010-MASS AIR FLOW SENSOR NEGATIVE DEVIATION
When Monitored: With the ignition on.
Set Condition: The ECM detects a rationality problem with the MAF Sensor.
P2010-MASS AIR FLOW SENSOR POSITIVE DEVIATION
When Monitored: With the ignition on.
Set Condition: The ECM detects a rationality problem with the MAF Sensor.
P2068-MASS AIR FLOW SENSOR PLAUSIBILITY SIGNAL RATIO TOO LARGE
When Monitored: With the ignition on.
Set Condition: The ECM detects a rationality problem with the MAF Sensor.
P2068-MASS AIR FLOW SENSOR PLAUSIBILITY SIGNAL RATIO TOO SMALL
When Monitored: With the ignition on.
Set Condition: The ECM detects a rationality problem with the MAF Sensor.
POSSIBLE CAUSES
MASS AIRFLOW SENSOR
INTERMITTENT CONDITION
11 0
DRIVEABILITY - DIESEL

TEST ACTION APPLICABILITY
1NOTE: Inspect the turbocharger inlet tube between the MAF Sensor and the
turbocharger for damage, restriction or poor connection. Any of these
conditions can cause a MAF Plausibility DTC.
NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
Turn the ignition on.
With the DRBIIIt, erase the ECM DTCs.
Test drive the vehicle.
With the DRBIIIt, read the ECM DTCs.
Does the DRB III display a Mass Air Flow Sensor DTC?All
Ye s!Replace the MAF Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No!Go To 2
2WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No!Test Complete.
111
DRIVEABILITY - DIESEL
P2010-MASS AIR FLOW SENSOR NEGATIVE DEVIATION ÐContinued

Symptom List:
P2013-AMBIENT AIR TEMPERATURE SIGNAL VOLTAGE TOO
HIGH
P2013-AMBIENT AIR TEMPERATURE SIGNAL VOLTAGE TOO LOW
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2013-AMBIENT AIR TEMPER-
ATURE SIGNAL VOLTAGE TOO HIGH.
When Monitored and Set Condition:
P2013-AMBIENT AIR TEMPERATURE SIGNAL VOLTAGE TOO HIGH
When Monitored: With the ignition on.
Set Condition: The Ambient Air Temperature Sensor signal is above 4.82 volts.
P2013-AMBIENT AIR TEMPERATURE SIGNAL VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The Ambient Air Temperature Sensor signal is below 0.068 volt.
TEST ACTION APPLICABILITY
1NOTE: The Ambient Air Temperature Sensor is hardwired to the Instrument
Cluster
NOTE: Refer to the Instrument Cluster Diagnostic Information for the
related symptom(s).
Test Complete.All
Ye s!Test Complete.
11 2
DRIVEABILITY - DIESEL

Symptom List:
P2014-ENGINE OIL SENSOR OIL TEMPERATURE PLAUSIBILITY
P2014-ENGINE OIL SENSOR SIGNAL PLAUSIBILITY
P2014-ENGINE OIL SENSOR SIGNAL VOLTAGE IS TOO HIGH
P2014-ENGINE OIL SENSOR SIGNAL VOLTAGE IS TOO LOW
P2040-ENGINE OIL SENSOR CIRCUIT INVALID LEVEL
P2040-ENGINE OIL SENSOR CIRCUIT LEVEL OUT OF RANGE
P2040-ENGINE OIL SENSOR CIRCUIT LEVEL OUT OF RANGE
P2041-ENGINE OIL SENSOR POOR OIL QUALITY
P2041-ENGINE OIL SENSOR QUALITY MEASUREMENT ERROR
P2041-ENGINE OIL SENSOR QUALITY PLAUSIBILITY
P2042-ENGINE OIL SENSOR WATER CONTAMINATION
P2061-ENGINE OIL SENSOR OPEN CIRCUIT
P2062-ENGINE OIL SENSOR SIGNAL ERROR
P2062-ENGINE OIL SENSOR SYNCHRONIZATION ERROR
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2014-ENGINE OIL SENSOR OIL
TEMPERATURE PLAUSIBILITY.
POSSIBLE CAUSES
5-VOLT SUPPLY CIRCUIT OPEN
ECM - ENGINE OIL SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
ECM - ENGINE OIL SENSOR SIGNAL SHORT TO GROUND
ENGINE OIL SENSOR FAILURE
ENGINE OIL SENSOR SIGNAL CIRCUIT OPEN
ENGINE OIL SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
ENGINE OIL SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND
ENGINE OIL SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
SENSOR GROUND CIRCUIT OPEN
ENGINE OIL CONTAMINATION
INTERMITTENT CONDITION
11 3
DRIVEABILITY - DIESEL

TEST ACTION APPLICABILITY
1NOTE: If DTC P1611, P2306 or P2332 is present with this DTC, diagnose
DTCs P1611, P2306 or P2332 before diagnosing this DTC.
NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
NOTE: The engine oil must be at the proper level for this test to be valid.
Refer to the Service Information and ensure the engine oil level is at the
specified level.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Start the engine several times, letting the engine run for at least 30 seconds at a
time.
With the DRB, read ECM DTCs.
Did this DTC set again?All
Ye s!Go To 2
No!Go To 10
2WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Refer to any Technical Service Bulletins (TSB) that may apply.
Turn the ignition off.
NOTE: This DTC implies that the engine may be contaminated by water,
engine coolant or other material due to a mechanical or service failures
such as failed gaskets, seals, cracks or incorrectly installed components.
Inspect the engine for conditions referred to in the above note.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No!Go To 3
3 Turn the ignition off.
Disconnect the Engine Oil Sensor harness connector.
Turn the ignition on.
Measure the voltage of the Engine Oil Sensor Signal circuit.
Select the appropriate voltage reading.All
Voltage is above 5.4 volts.
Go To 4
Voltage is between 4.7 and 5.4 volts.
Go To 5
Voltage is below 4.7 volts.
Go To 7
11 4
DRIVEABILITY - DIESEL
P2014-ENGINE OIL SENSOR OIL TEMPERATURE PLAUSIBILITY Ð
Continued

TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Engine Oil Sensor harness connector.
Disconnect the ECM harness connectors.
Remove the Engine Control Relay.
Connect a jumper wire between cavity 30 and cavity 87 of the Engine Control Relay
connector.
Turn the ignition on.
Measure the voltage of the Engine Oil Sensor Signal circuit.
Is the voltage below 1.0 volt?All
Ye s!Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the Engine Oil Sensor Signal circuit for a short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Engine Oil Sensor harness connector.
Measure the resistance of the 5-Volt Supply circuit between the ECM harness
connector and the Engine Oil Sensor harness connector.
Is the resistance below 10.0 ohms?All
Ye s!Go To 6
No!Repair the 5-Volt Supply circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
6 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Engine Oil Sensor harness connector.
Measure the resistance of the Sensor Ground circuit.
Is the resistance below 10.0 ohms?All
Ye s!Replace the Engine Oil Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
7 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Engine Oil Sensor harness connector.
Measure the resistance of the Engine Oil Sensor Signal circuit.
Is the resistance below 10.0 ohms?All
Ye s!Go To 8
No!Repair the Engine Oil Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
8 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Engine Oil Sensor harness connector.
Measure the resistance between ground and the Engine Oil Sensor Signal circuit.
Is the resistance above 1000 ohms?All
Ye s!Go To 9
No!Repair the Engine Oil Sensor Signal circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
11 5
DRIVEABILITY - DIESEL
P2014-ENGINE OIL SENSOR OIL TEMPERATURE PLAUSIBILITY Ð
Continued

TEST ACTION APPLICABILITY
9 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Engine Oil Sensor harness connector.
Measure the resistance between Sensor Ground and the Engine Oil Sensor Signal
circuit.
Is the resistance above 1000 ohms?All
Ye s!Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the Engine Oil Sensor Signal circuit for a short to the
Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
10WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No!Test Complete.
11 6
DRIVEABILITY - DIESEL
P2014-ENGINE OIL SENSOR OIL TEMPERATURE PLAUSIBILITY Ð
Continued

Symptom List:
P2015-FUEL RAIL PRESSURE MALFUNCTION MAXIMUM FUEL
FLOW EXCEEDED
P2016-FUEL RAIL PRESSURE MALFUNCTION DECELERATION
ERROR
P2016-FUEL RAIL PRESSURE MALFUNCTION FUEL FLOW BE-
LOW MINIMUM QUANTITY
P2017-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE IS
TOO LOW
P2018-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE IS
TOO HIGH
P2019-FUEL RAIL PRESSURE MALFUNCTION MAXIMUM FUEL
PRESSURE EXCEEDED
P2019-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE IS
TOO LOW
P2020-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE IS
TOO LOW
P2020-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE
TOO HIGH
P2021-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE
TOO LOW
P2023-FUEL RAIL PRESSURE MALFUNCTION RAIL PRESSURE
TOO HIGH
P2047-FUEL RAIL PRESSURE MALFUNCTION MAXIMUM FUEL
PRESSURE EXCEEDED
P2049-FUEL RAIL PRESSURE MALFUNCTION DECELERATION
ERROR
P2051-FUEL RAIL PRESSURE MALFUNCTION MAXIMUM FUEL
PRESSURE EXCEEDED
P2052-FUEL RAIL PRESSURE MALFUNCTION PLAUSIBILITY
WITH FUEL PRESSURE SOLENOID
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2015-FUEL RAIL PRESSURE
MALFUNCTION MAXIMUM FUEL FLOW EXCEEDED.
POSSIBLE CAUSES
AIR IN FUEL SYSTEM
CHECKING ELECTRICAL CIRCUITS-ENGINE RUNNING
CHECKING ELECTRICAL CIRCUITS-NO START
CHECKING FOR OTHER DTC'S
CHECKING THE FUEL DELIVERY SYSTEM
11 7
DRIVEABILITY - DIESEL