diagram MERCEDES-BENZ SPRINTER 2006 Repair 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 and the Security
System Module is connected.
Set Condition: The Security System Module detects a short to ground on the Siren Signal
Control circuit.
POSSIBLE CAUSES
DTC PRESENT
SIREN SIGNAL CONTROL WIRE SHORTED
SIREN
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 Disconnect the Siren connector.
Disconnect the Security System Module C2 connector.
Measure the resistance between ground and the Siren Signal Control circuit.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Siren Signal Control circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No!Replace the Siren.
Perform BODY VERIFICATION TEST - VER 1.
238
VEHICLE THEFT/SECURITY

10.0 SCHEMATIC DIAGRAMS
10.1 AIRBAG SYSTEM
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
289
SCHEMATIC DIAGRAMS

10.2 COMMUNICATION
10.2.1 COMMUNICATION K-LINES
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
290
SCHEMATIC DIAGRAMS

10.2.2 CAN BUS NETWORK
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
291
SCHEMATIC DIAGRAMS

10.3 HEATING & A/C
10.3.1 AUTOMATIC TEMPERATURE CONTROL (ATC)
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
292
SCHEMATIC DIAGRAMS

10.3.2 CABIN HEATER MODULE (CHM)
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
293
SCHEMATIC DIAGRAMS

10.3.3 HEATER BOOSTER MODULE (HBM)
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
294
SCHEMATIC DIAGRAMS
10.3 HEATING & A/C (Continued)

10.4 INSTRUMENT CLUSTER
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
295
SCHEMATIC DIAGRAMS

10.5 POWER DOOR LOCKS/RKE
10.5.1 FRONT DOORS
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
296
SCHEMATIC DIAGRAMS

10.5.2 SLIDING AND REAR DOORS
S
C
H
E
M
A
T
I
C
D
I
A
G
R
A
M
S
297
SCHEMATIC DIAGRAMS