2006 MERCEDES-BENZ SPRINTER ignition

Symptom:
NO CAN COMMUNICATION WITH TCM
POSSIBLE CAUSES
DTC PRESENT
OPEN CAN CIRCUITS AT INSTRUMENT CLUSTER
INSTRUMENT CLUSTER
CHECK POWERS AND GROUNDS TO THE AFFECTED MODULE
OPEN CAN CIRCUITS AT TCM
TCM
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.
Did this DTC reset?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 With the DRBIIIt, check the ABS, ECM for this same or similar TCM message error
DTC.
Is the same or similar DTC set in the ECM?All
Ye s!Go To 3
No!Go To 5
3 Turn the ignition off.
Disconnect the TCM harness connector.
Check each power and ground circuit to the module.
Were any problems found?All
Ye s!Refer to the wiring diagrams located in the service information to
help isolate an open or shorted condition. Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 4
4 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-)
circuit in the TCM harness connector.
Is the resistance 60 ohms,   3.0 ohms?All
Ye s!Replace the TCM in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1.
No!Repair the CAN C Bus (+) or the CAN C Bus (-) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
192
INSTRUMENT CLUSTER

TEST ACTION APPLICABILITY
5 Turn the ignition off to the lock position.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-)
circuit in the Instrument Cluster harness connector.
Is the resistance 60 ohms,   3.0 ohms?All
Ye s!Replace the Instrument Cluster in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No!Repair the CAN C Bus (+) or the CAN C Bus (-) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
193
INSTRUMENT CLUSTER
NO CAN COMMUNICATION WITH TCM ÐContinued

Symptom:
PREGLOW INDICATOR LAMP FAILURE
POSSIBLE CAUSES
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1NOTE: The Instrument Cluster performs internal tests on the indicators
during each ignition cycle.
With the DRBIIIt, erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
With the DRBIIIt, read DTCs.
Does the DRBIIItread: Preglow Indicator Lamp Failure?All
Ye s!Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No!Test Complete.
194
INSTRUMENT CLUSTER

Symptom:
SRS INDICATOR LAMP FAILURE
POSSIBLE CAUSES
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 If this fault is present, interrogate the Airbag Control Module for any SRS Indicator
faults.
NOTE: The Instrument Cluster performs internal tests on the indicators
during each ignition cycle.
With the DRBIIIt, erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
With the DRBIIIt, read DTCs.
Does the DRBIIItread: SRS Indicator Lamp Failure?All
Ye s!Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No!Test Complete.
195
INSTRUMENT CLUSTER

Symptom:
DRIVER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO
GROUND
When Monitored and Set Condition:
DRIVER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND
When Monitored: Whenever the battery is above 10.0 volts and the module is connected.
Set Condition: Whenever the CTM senses resistance on the Driver Door Ajar Indicator
Driver circuit for over 30 seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
MASTER DOOR LOCK SWITCH SHORTED
CENTRAL TIMER MODULE SHORTED
DRIVER DOOR AJAR INDICATOR DRIVER WIRE 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.
Operate the Door Locks several times while observing the DRBIIIt.
Wait 10 seconds.
Does the DRBIIItdisplay DRIVER DOOR AJAR INDICATOR 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 Master Door Lock Switch connector.
Measure the resistance between ground and the Driver Door Ajar Indicator Driver
circuit..
Is the resistance below 1000.0 ohms?All
Ye s!Go To 3
No!Replace the Master Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
196
POWER DOOR LOCKS/RKE

Symptom:
PASSENGER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT
TO GROUND
When Monitored and Set Condition:
PASSENGER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND
When Monitored: Whenever the battery is above 10.0 volts and the module is connected.
Set Condition: Whenever the CTM senses resistance on the Passenger Door Ajar
Indicator Driver circuit for over 30 seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
MASTER DOOR LOCK SWITCH SHORTED
CENTRAL TIMER MODULE SHORTED
PASSENGER DOOR AJAR INDICATOR DRIVER WIRE 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.
Operate the Door Locks several times while observing the DRBIIIt.
Wait 10 seconds.
Does the DRBIIItdisplay PASSENGER DOOR AJAR INDICATOR 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 Master Door Lock Switch connector.
Measure the resistance between ground and the Passenger Door Ajar Indicator
Driver circuit..
Is the resistance below 1000.0 ohms?All
Ye s!Go To 3
No!Replace the Master Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
198
POWER DOOR LOCKS/RKE

Symptom:
RKE INTERFACE CIRCUIT SHORT TO GROUND - CTM
When Monitored and Set Condition:
RKE INTERFACE CIRCUIT SHORT TO GROUND - CTM
When Monitored: Whenever the battery voltage is above 10.0 volts and the module is
connected.
Set Condition: If the CTM monitors a resistance below 7500.0 ohms for over 1 minute,
this code will set.
POSSIBLE CAUSES
DTC PRESENT
CENTRAL TIMER MODULE SHORTED
RKE INTERFACE WIRE SHORTED
SKREEM SHORTED
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.
Using the RKE transmitter, operate the Door Locks several times while observing the
DRBIIIt.
Wait 10 seconds.
Does the DRBIIItdisplay RKE INTERFACE CIRCUIT SHORT TO GROUND?All
Ye s!Go To 2
No!Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition. Using the
RKE transmitter, operate the door locks several times and re-
check for any DTC's.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Central Timer Module C1 connector.
Measure the resistance between ground and the RKE Interface circuit.
Is the resistance below 8500.0 ohms?All
Ye s!Go To 3
No!Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
201
POWER DOOR LOCKS/RKE

Symptom:
RKE INTERFACE CIRCUIT SHORT TO GROUND - SKREEM
When Monitored and Set Condition:
RKE INTERFACE CIRCUIT SHORT TO GROUND - SKREEM
When Monitored: Whenever the battery voltage is above 10.0 volts and the module is
connected.
Set Condition: If the SKREEM monitors a resistance below 4000.0 ohms or over 9000.0
ohms for over 30 seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
SENTRY KEY REMOTE ENTRY MODULE SHORTED
RKE INTERFACE WIRE SHORTED
RKE INTERFACE WIRE OPEN
CENTRAL TIMER MODULE FAILURE
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.
Using the RKE transmitter, operate the Door Locks several times while observing the
DRBIIIt.
Wait 10 seconds.
Does the DRBIIItdisplay RKE INTERFACE CIRCUIT OPEN OR SHORT TO
GROUND?All
Ye s!Go To 2
No!Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition. Using the
RKE transmitter, operate the door locks several times and re-
check for any DTC's.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Sentry Key RemotE Entry Module connector.
Measure the resistance between ground and the RKE Interface circuit.
Is the resistance between 5500.0 (5.5K) and 6500.0 (6.5K) ohms?All
Ye s!Replace the Sentry Key Remote Entry Module.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 3
203
POWER DOOR LOCKS/RKE