2006 MERCEDES-BENZ SPRINTER ignition

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Driver Cylinder Lock Switch connector.
Disconnect the Security System Module.
Measure the resistance between ground and the Driver Cylinder Lock Sense circuit.
Is the resistance below 400.0 ohms?All
Ye s!Repair the Driver Cylinder Lock Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Replace the Security System Module.
Perform BODY VERIFICATION TEST - VER 1.
213
VEHICLE THEFT/SECURITY
DRIVER CYLINDER LOCK SWITCH CIRCUIT SHORT TO GROUND Ð
Continued

Symptom:
DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO
GROUND
When Monitored and Set Condition:
DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO GROUND
When Monitored: Whenever the battery voltage is above 10.0 volts and the Security
System Module is connected.
Set Condition: If the Driver Cylinder Unlock Circuit is closed to ground for over 30
seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
DRIVER CYLINDER LOCK SWITCH SHORTED
DRIVER CYLINDER UNLOCK SENSE CIRCUIT SHORT TO GROUND
SECURITY SYSTEM MODULE SHORT TO GROUND
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition switch from ON to OFF to ON.
With the DRBIIIt, read DTC's.
Lock and unlock the doors from the Driver Cylinder Lock Switch several times while
observing the DRBIIIt.
Wait 10 seconds.
Does the DRBIIItdisplay DRIVER CYLINDER UNLOCK SWITCH CIRCUIT
SHORT TO GROUND?All
Ye s!Go To 2
No!The conditions that caused this code to set are not present at this
time. Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Driver Cylinder Lock Switch connector.
Measure the resistance between ground and the Driver Cylinder Unlock Sense
circuit.
Is the resistance below 400.0 ohms?All
No!Replace the Driver Cylinder Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
Ye s!Go To 3
214
VEHICLE THEFT/SECURITY

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Driver Cylinder Lock Switch connector.
Disconnect the Security System Module.
Measure the resistance between ground and the Driver Cylinder Unlock Sense
circuit.
Is the resistance below 400.0 ohms?All
Ye s!Repair the Driver Cylinder Unlock Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Replace the Security System Module.
Perform BODY VERIFICATION TEST - VER 1.
215
VEHICLE THEFT/SECURITY
DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO GROUND Ð
Continued

Symptom:
FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND
When Monitored and Set Condition:
FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND
When Monitored: Whenever the battery voltage is above 10.0 volts and the Security
System Module is connected.
Set Condition: If a front door jamb switch is closed or the front courtesy lamps control
circuit is grounded for over 30 minutes, this code will set.
POSSIBLE CAUSES
DTC PRESENT
DRIVER DOOR JAMB SWITCH SHORTED
PASSENGER DOOR JAMB SWITCH SHORTED
SECURITY SYSTEM MODULE SHORTED
FRONT COURTESY LAMPS CONTROL SHORT TO GROUND
TEST ACTION APPLICABILITY
1NOTE: Ensure the front courtesy lamp switches are operating properly
before proceeding.
NOTE: If this code is active, the front courtesy lamps will remain on with all
the doors closed.
With the DRBIIIt, record and erase DTC's.
Cycle the ignition switch from ON to OFF to ON.
With the DRBIIIt, read DTC's.
Open and close the front doors several times while observing the DRBIIIt.
Wait 10 seconds.
Does the DRBIIItdisplay FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO
GROUND?All
Ye s!Go To 2
No!The conditions that caused this code to set are not present at this
time. Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Driver Door Jamb Switch connector.
Ensure the passenger door is closed.
Observe the courtesy lamps.
Did the courtesy lamps go off?All
Ye s!Replace the Driver Door Jamb Switch.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 3
216
VEHICLE THEFT/SECURITY

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Passenger Door Jamb Switch connector.
Ensure the driver door is closed or the switch is disconnected.
Observe the courtesy lamps.
Did the courtesy lamps go off?All
Ye s!Replace the Passenger Door Jamb Switch.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 4
4 Turn the ignition off.
Disconnect the Security System Module C1 connector.
Ensure the driver and passenger doors are closed or the switches are disconnected.
Observe the courtesy lamps.
Did the courtesy lamps go off?All
Ye s!Replace the Security System Module in accordance with service
information.
Perform BODY VERIFICATION TEST - VER 1.
No!Repair the Front Courtesy Lamps Control circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
217
VEHICLE THEFT/SECURITY
FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND ÐContinued

TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition switch from ON to OFF to ON.
Wait 10 seconds.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay the same DTC?All
Ye s!Replace the Security System Module.
Perform BODY VERIFICATION TEST - VER 1.
No!Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
219
VEHICLE THEFT/SECURITY
INTERNAL ERROR - SSM ÐContinued

Symptom:
INTRUSION SENSOR 1 CIRCUIT OPEN/SHORT TO GROUND
When Monitored and Set Condition:
INTRUSION SENSOR 1 CIRCUIT OPEN/SHORT TO GROUND
When Monitored: Whenever the battery voltage is above 10.0 volts and the Security
System Module is connected.
Set Condition: The Security System Module detects the incorrect voltage on the Intrusion
Sensor circuit.
POSSIBLE CAUSES
DTC PRESENT
FUSE 2 IN FUSE BLOCK 3
FUSED B(+) WIRE OPEN
GROUND CIRCUIT OPEN
INTRUSION SENSOR 1 SIGNAL SHORTED
INTRUSION SENSOR 1 SIGNAL CIRCUIT OPEN
INTRUSION SENSOR INTERFACE WIRE SHORTED
INTRUSION SENSOR INTERFACE WIRE OPEN
INTRUSION SENSOR
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Remove the ignition key.
Close and lock all doors and set the Vehicle Theft Security System.
Wait 1 minute.
Disarm the Vehicle Theft System.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay the same DTC?All
Ye s!Go To 2
No!Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2 Check Fuse 2 in Fuse Block 3.
Is the fuse open?All
Ye s!Check for a short to ground and replace the fuse.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 3
220
VEHICLE THEFT/SECURITY

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