2006 MERCEDES-BENZ SPRINTER turn signal

Symptom:
FUEL LEVEL SENSOR SHORT TO GROUND
POSSIBLE CAUSES
FUEL LEVEL SENSOR
FUEL LEVEL SENSOR CIRCUITS SHORTED TOGETHER
INSTRUMENT CLUSTER
FUEL LEVEL SENSOR SIGNAL (+) SHORT TO GROUND
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Turn the ignition on, with the DRBIIIt, read DTCs.
Does the DRBIIItdisplay: Fuel Level Sensor Shorted to Ground?All
Ye s!Go To 2
No!Replace the Fuel Level Sensor in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Disconnect the Fuel Pump Module harness connector.
Measure the resistance between ground and the Fuel Level Sensor Signal (+) circuit.
Is the resistance below 1000 ohms?All
Ye s!Repair the Fuel Level Sensor Signal (+) circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 3
3 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance between the Fuel Level Sensor Signal (+) circuit and Fuel
Level Sensor Signal Return circuit.
Is the resistance below 1000 ohms?All
Ye s!Repair the Fuel Level Sensor Signal (+) circuit for a short to the
Sensor Return circuit.
Perform BODY VERIFICATION TEST - VER 1.
No!Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
184
INSTRUMENT CLUSTER

TEST ACTION APPLICABILITY
3 Disconnect the Intrusion Sensor No. 1 connector.
Measure the voltage of the Fused B(+) circuit.
Is the voltage above 10.0 volts?All
Ye s!Go To 4
No!Repair the Fused B(+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4 Disconnect the Intrusion Sensor No. 1 connector.
Measure the resistance of the Ground circuit at the Intrusion Sensor connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 5
No!Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Disconnect the Security System Module C2 connector.
Disconnect the Intrusion Sensor No. 1 connector.
Measure the resistance between ground and the Intrusion Sensor 1 Signal circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Intrusion Sensor 1 Signal wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 6
6 Disconnect the Intrusion Sensor No. 1 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance of the Intrusion Sensor 1 Signal circuit between the SSM C2
connector and the Intrusion Sensor No 1 connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 7
No!Repair the Intrusion Sensor 1 Signal wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
7 Disconnect the Intrusion Sensor No. 1 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance between ground and the Intrusion Sensor Interface circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Intrusion Sensor Interface circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 8
8 Disconnect the Intrusion Sensor No. 1 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance of the Intrusion Sensor Interface circuit between the SSM C2
connector and the Intrusion Sensor No. 1 connector.
Is the resistance below 5.0 ohms?All
Ye s!Replace the Intrusion Sensor.
Perform BODY VERIFICATION TEST - VER 1.
No!Repair the Intrusion Sensor Interface circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
221
VEHICLE THEFT/SECURITY
INTRUSION SENSOR 1 CIRCUIT OPEN/SHORT TO GROUND ÐContinued

TEST ACTION APPLICABILITY
3 Disconnect the Intrusion Sensor No. 2 connector.
Measure the voltage of the Fused B(+) circuit.
Is the voltage above 10.0 volts?All
Ye s!Go To 4
No!Repair the Fused B(+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4 Disconnect the Intrusion Sensor No. 2 connector.
Measure the resistance of the Ground circuit at the Intrusion Sensor connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 5
No!Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Disconnect the Security System Module C2 connector.
Disconnect the Intrusion Sensor No. 2 connector.
Measure the resistance between ground and the Intrusion Sensor 2 Signal circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Intrusion Sensor 2 Signal wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 6
6 Disconnect the Intrusion Sensor No. 2 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance of the Intrusion Sensor 2 Signal circuit between the SSM C2
connector and the Intrusion Sensor No 2 connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 7
No!Repair the Intrusion Sensor 2 Signal wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
7 Disconnect the Intrusion Sensor No. 2 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance between ground and the Intrusion Sensor Interface circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Intrusion Sensor Interface circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 8
8 Disconnect the Intrusion Sensor No. 2 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance of the Intrusion Sensor Interface circuit between the SSM C2
connector and the Intrusion Sensor No. 2 connector.
Is the resistance below 5.0 ohms?All
Ye s!Replace the Intrusion Sensor.
Perform BODY VERIFICATION TEST - VER 1.
No!Repair the Intrusion Sensor Interface circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
224
VEHICLE THEFT/SECURITY
INTRUSION SENSOR 2 CIRCUIT OPEN/SHORT TO GROUND ÐContinued

TEST ACTION APPLICABILITY
3 Disconnect the Intrusion Sensor No. 3 connector.
Measure the voltage of the Fused B(+) circuit.
Is the voltage above 10.0 volts?All
Ye s!Go To 4
No!Repair the Fused B(+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4 Disconnect the Intrusion Sensor No. 3 connector.
Measure the resistance of the Ground circuit at the Intrusion Sensor connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 5
No!Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Disconnect the Security System Module C2 connector.
Disconnect the Intrusion Sensor No. 3 connector.
Measure the resistance between ground and the Intrusion Sensor 3 Signal circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Intrusion Sensor 3 Signal wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 6
6 Disconnect the Intrusion Sensor No. 3 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance of the Intrusion Sensor 3 Signal circuit between the SSM C2
connector and the Intrusion Sensor No 3 connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 7
No!Repair the Intrusion Sensor 3 Signal wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
7 Disconnect the Intrusion Sensor No. 3 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance between ground and the Intrusion Sensor Interface circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Intrusion Sensor Interface circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 8
8 Disconnect the Intrusion Sensor No. 3 connector.
Disconnect the Security System Module C2 connector.
Measure the resistance of the Intrusion Sensor Interface circuit between the SSM C2
connector and the Intrusion Sensor No. 3 connector.
Is the resistance below 5.0 ohms?All
Ye s!Replace the Intrusion Sensor.
Perform BODY VERIFICATION TEST - VER 1.
No!Repair the Intrusion Sensor Interface circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
227
VEHICLE THEFT/SECURITY
INTRUSION SENSOR 3 CIRCUIT OPEN/SHORT TO GROUND ÐContinued

Symptom:
CHECKING THE RAIN SENSOR/WIPER OPERATION
POSSIBLE CAUSES
CHECK THE WIPER MOTOR CIRCUIT CAVITY 2
CHECK THE WIPER MOTOR CIRCUIT CAVITY 5
CHECK THE WIPER MOTOR CIRCUIT CAVITY 5 II
CHECK THE WIPER MOTOR CIRCUIT CAVITY 6
CHECK THE WIPER MOTOR CIRCUIT CAVITY 6 II
CHECK WIPER MOTOR GROUND CIRCUIT
CHECKING THE 12 VOLT POWER SUPPLY
CHECKING THE GROUND CIRCUIT
CHECKING THE RAIN SENSOR OPERATION
CHECKING WIPER SIGNALS TO THE RAIN SENSOR MODULE
RAIN SENSOR
RAIN SENSOR CIRCUIT(S) OPEN
RAIN SENSOR CIRCUIT(S) SHORTED TO GROUND
RAIN SENSOR CIRCUIT(S) SHORTED TO VOLTAGE
RAIN SENSOR MODULE
RAIN SNSR CKTS SHORTED TOGETHER
WIPER MOTOR
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Monitor the windshield wipers while turning the wiper switch to each of the 4 switch
positions: OFF, INTERMITTENT, LOW and HIGH.
Did the wipers functions properly in each wiper switch position?All
Ye s!Go To 2
No!Go To 8
2NOTE: The Rain Sensor is located in the windshield mount of the rear view
mirror in the top-center of the windshield.
NOTE: The Rain Sensor Module (RSM) is mounted above the accelerator
pedal assembly.
Turn the ignition on.
Move the Wiper Switch to the Intermittent position.
Spray or pour water on the Rain Sensor area of the windshield.
Did the wipers activate when water was sprayed/poured on the Rain Sensor area of
the windshield?All
Ye s!Rain Sensor/Wiper System operating properly. Test complete.
No!Go To 3
239
WINDSHIELD WIPER & WASHER

TEST ACTION APPLICABILITY
8 Turn the ignition off.
NOTE: The Rain Sensor Module (RSM) is mounted above the accelerator
pedal assembly.
Disconnect the Rain Sensor Module harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Battery Supply circuit at the
Rain Sensor Module harness connector cavity A-1.
Does the test light illuminate brightly?All
Ye s!Go To 9
No!Repair the open 12 Volt Power Supply circuit.
9 Turn the ignition off.
Disconnect the Rain Sensor Module harness connector.
Using a 12-volt test light connected to 12 volts, check the Ground circuit at the Rain
Sensor Module harness connector cavity C-1.
Does the test light illuminate brightly?All
Ye s!Go To 10
No!Repair the open Ground circuit.
10 Turn the ignition off.
Disconnect the Rain Sensor Module harness connector.
Turn the ignition on.
Refer to the Wiper/Washer Switch Voltage Chart in Charts and Graphs to verify
correct wiper switch voltage signals to the Rain Sensor Module when the wiper
switch is adjusted to each of the four positions.
Do voltage readings at the RSM connector correspond correctly to voltages specified
in the chart?All
Ye s!Go To 11
No!Refer to the Rain Sensor/Wiper System Schematic in Charts and
Graphs to diagnose base wiper system problem with the circuit(s)
that did not have the correct corresponding voltage to the chart.
11 Turn the ignition off.
Disconnect the wiper motor harness connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit at the Wiper
Motor harness connector.
Does the test light illuminate brightly?All
Ye s!Go To 12
No!Repair the Wiper Motor Ground circuit for an open.
241
WINDSHIELD WIPER & WASHER
CHECKING THE RAIN SENSOR/WIPER OPERATION ÐContinued

Verification Tests
ABS VERIFICATION TEST - VER 1 APPLICABILITY
1. Turn the ignition off.
2. Connect all previously disconnected components and connectors.
3. Ensure all accessories are turned off and the battery is fully charged.
4. Ensure that the Ignition is on, and with the DRBIII, erase all Diagnostic Trouble Codes from
ALL modules. Start the engine and allow it to run for 2 minutes and fully operate the system
that was malfunctioning.
5. Turn the ignition off and wait 5 seconds. Turn the ignition on and using the DRBIII, read
DTC's from ALL modules.
6. If any Diagnostic Trouble Codes are present, return to Symptom list and troubleshoot new
or recurring symptom.
7. NOTE: If the CAB/HCU was replaced, ensure the CAB has been initialized
8. NOTE: If the SKREEM or ECM was replaced, refer to the service information for
proper programming procedures.
9. NOTE: For Sensor Circuit/Signal and Pump Motor faults, the CAB must sense all 4
wheels at 12 km/h (8 mph) before it will extinguish the ABS Indicator.
10. If there are no DTC's present after turning ignition on, road test the vehicle for at least 5
minutes. Perform several antilock braking stops.
11. CAUTION: Ensure braking capability is available before road testing.
12. Again, with the DRBIIItread DTC's. If any DTC's are present, return to Symptom list.
13. If there are no Diagnostic Trouble Codes (DTC's) present, and the customer's concern can
no longer be duplicated, the repair is complete.
Are any DTC's present or is the original concern still present?All
Ye s!Repair is not complete, refer to appropriate symptom.
No!Repair is complete.
AIRBAG VERIFICATION TEST - VER 1 APPLICABILITY
1. Remove any special tools or jumper wires and reconnect all previously disconnected
components - except the Battery.
2. WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON,
THEN RECONNECT THE BATTERY.
3. Connect the DRBIIItto the Data Link Connector - use the most current software available.
4. Use the DRBIIItand erase the stored codes in all airbag system modules.
5. Turn the ignition off, and wait 15 seconds, then turn the ignition on.
6. Wait one minute, and read active codes and if there are none present read the stored codes.
7. Note: If equipped with Airbag On - Off switch, read the DTC's in all switch positions.
8. Note: Read the DTC's in all airbag system related modules.
9. If the DRBIIItshows any active or stored codes, return to the Symptom list and follow path
specified for that trouble code. If no active or stored codes are present, the repair is complete.
Are any DTC's present or is the original condition still present?All
YES
Repair is not complete, refer to appropriate symptom list.
NO
Repair is complete.
244
VERIFICATION TESTS

AIRBAG SQUIB-DRIVER - YELLOWCAV CIRCUIT FUNCTION
1 20DG DRIVER AIRBAG SQUIB 1 LINE 2
2 20VT DRIVER AIRBAG SQUIB 1 LINE 1
AIRBAG SQUIB-PASSENGER - YELLOWCAV CIRCUIT FUNCTION
1 20BL/DG PASSENGER AIRBAG SQUIB 1 LINE 2
2 20BR/DG PASSENGER AIRBAG SQUIB 1 LINE 1
AMBIENT TEMPERATURE SENSORCAV CIRCUIT FUNCTION
1 20BL/DG AMBIENT TEMPERATURE SENSOR SIGNAL (+)
2 20BR/DG AMBIENT TEMPERATURE SENSOR SIGNAL RETURN
C
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N
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258
CONNECTOR PINOUTS