2006 MERCEDES-BENZ SPRINTER Service Manual

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Page 249 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
4 Disconnect the Siren connector.
Measure the resistance of the Ground circuit at the Siren connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 5
No!Repair the Ground

Page 250 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual Symptom:
SIREN INTERNAL FAILURE
When Monitored and Set Condition:
SIREN INTERNAL FAILURE
When Monitored: Whenever the battery voltage is above 10.0 volts and the Security
System Module is connected.
S

Page 251 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual Symptom:
SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND
When Monitored and Set Condition:
SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND
When Monitored: Whenever the battery voltage is above 10.0 volts an

Page 252 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual 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 WIPE

Page 253 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Rain Sensor Module harness connector.
Measure the resistance between ground and each of the Rain Sensor circuits at the
Rain Sensor Mo

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Rain Sensor Module harness connector.
Measure the resistance between ground and each of the Rain Sensor circuits at the
Rain Sensor Module harness connector.
Is the resistance above 1000 ohms for each measurement?All
Ye s!Go To 4
No!Repair the circuit(s) that measured below 1000 ohms for a short to
ground.
4 Turn the ignition off.
Disconnect the Rain Sensor Module harness connector.
Turn the ignition on.
Measure the voltage of each of the Rain Sensor circuits at the Rain Sensor Module
harness connector.
Is the voltage below 1.0 volt for each measurement?All
Ye s!Go To 5
No!Repair the circuit(s) that measured above 1.0 volt for a short to
voltage.
5 Turn the ignition off.
Disconnect the Rain Sensor harness connector.
Disconnect the Rain Sensor Module harness connector.
Measure the resistance of each Rain Sensor circuit between the Rain Sensor Module
harness connector and the Rain Sensor harness connector.
Is the resistance below 10.0 ohms for each measurement?All
Ye s!Go To 6
No!Repair the circuit(s) that measured above 10.0 ohms for an open.
6 Turn the ignition off.
Disconnect the Rain Sensor harness connector.
Disconnect the Rain Sensor Module harness connector.
Measure the resistance between Rain Sensor harness connector cavities 1 and 2.
Repeat this step for cavities 1 and 3, cavities 2 and 3.
Is the resistance above 1000 ohms for each measurement?All
Ye s!Go To 7
No!Repair the circuit(s) that measured below 1000 ohms for a short
together.
7 Turn the ignition off.
Replace the Rain Sensor in accordance with the Service Information.
Turn the ignition on.
Move the Wiper Switch to the Intermittent position.
Spray or pour water on the Rain Sensor area of the windshield.
NOTE: The Rain Sensor is located in the windshield mount of the rear view
mirror in the top-center of the windshield.
Did the wipers activate when water was sprayed/poured on the Rain Sensor area of
the windshield?All
Ye s!Replace the original Rain Sensor in accordance with the Service
Information.
No!Replace the Rain Sensor Module in accordance with the Service
Information.
240
WINDSHIELD WIPER & WASHER
CHECKING THE RAIN SENSOR/WIPER OPERATION ÐContinued

Page 254 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual 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 ign

Page 255 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
12NOTE: Ensure the Rain Sensor Module harness connector is reconnected.
Turn the ignition off.
Disconnect the wiper motor harness connector.
Connect a voltmeter between groun

TEST ACTION APPLICABILITY
12NOTE: Ensure the Rain Sensor Module harness connector is reconnected.
Turn the ignition off.
Disconnect the wiper motor harness connector.
Connect a voltmeter between ground and the wiper motor harness connector cavity
2 (harness side).
Turn the ignition on.
While observing the voltmeter, move the wiper switch to the OFF, INTERMITTENT,
LOW and HIGH positions.
Does the voltmeter display above 10.0 volts for each of the wiper switch positions?All
Ye s!Go To 13
No!Repair circuit between Wiper Motor harness connector cavity 2
and Rain Sensor Module harness connector cavity C-2 for an
open, short to ground or short to voltage. If ok, Replace the Rain
Sensor Module.
13 Turn the ignition off.
Disconnect the wiper motor harness connector.
Connect a voltmeter between ground and the wiper motor harness connector cavity
5 (harness side).
Move the wiper switch to the OFF position.
Turn the ignition on.
While observing the voltmeter, move the wiper switch from the OFF position to the
INTERMITTENT position only.
Does the voltmeter display above 10.0 volts for both of the wiper switch positions?All
Ye s!Go To 14
No!Repair circuit between Wiper Motor harness connector cavity 5
and Rain Sensor Module harness connector cavity B-8 for an
open, short to ground or short to voltage. If ok, Replace the Rain
Sensor Module.
14 Turn the ignition off.
Disconnect the wiper motor harness connector.
Connect a voltmeter between ground and the wiper motor harness connector cavity
5 (harness side).
Move the wiper switch to the OFF position.
Turn the ignition on.
NOTE: The voltmeter should display above 10.0 volts for approximately 20
seconds then switch to 0.0 volts.
Does the voltmeter display above 10.0 volts then switch to 0.0 volts after 20 seconds?All
Ye s!Go To 15
No!Repair circuit between Wiper Motor harness connector cavity 5
and Rain Sensor Module harness connector cavity B-8 for an
open, short to ground or short to voltage. If ok, Replace the Rain
Sensor Module.
242
WINDSHIELD WIPER & WASHER
CHECKING THE RAIN SENSOR/WIPER OPERATION ÐContinued

Page 256 of 2305

MERCEDES-BENZ SPRINTER 2006 Service Manual TEST ACTION APPLICABILITY
15 Turn the ignition off.
Disconnect the wiper motor harness connector.
Connect a voltmeter between ground and the wiper motor harness connector cavity
6 (harness side).
Turn

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