Mercedes-Benz Sprinter / Dodge Sprinter. Service manual — part 52
Symptom:
RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - CTM
When Monitored and Set Condition:
RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - CTM
When Monitored:
Whenever the battery voltage is above 10.0 volts and the module is
connected.
Set Condition:
If the CTM monitors a voltage on the RKE Interface circuit for over 30
seconds, this code will set.
POSSIBLE CAUSES
CENTRAL TIMER MODULE SHORT TO VOLTAGE
RKE INTERFACE WIRE SHORT TO VOLTAGE
SKREEM SHORTED
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Central Timer Module C1 connector.
Measure the voltage between ground and the RKE Interface circuit.
Is there any voltage present?
All
Yes
→ Go To 2
No
→ Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the Central Timer Module C1 connector.
Disconnect the SKREEM connector.
Turn the ignition on.
Measure the voltage between ground and the RKE Interface circuit.
Is there any voltage present?
All
Yes
→ Repair the RKE Interface circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Sentry Key RemotE Entry Module.
Perform BODY VERIFICATION TEST - VER 1.
205
POWER DOOR LOCKS/RKE
Symptom:
RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - SKREEM
When Monitored and Set Condition:
RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - SKREEM
When Monitored:
Whenever the battery voltage is above 10.0 volts and the module is
connected.
Set Condition:
If the SKREEM monitors a voltage on the RKE Interface circuit for over
30 seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
SENTRY KEY REMOTE ENTRY MODULE SHORT TO VOLTAGE
RKE INTERFACE WIRE SHORT TO VOLTAGE
CENTRAL TIMER MODULE SHORTED
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from ON to OFF to ON.
With the DRBIII
t, read DTC’s.
Turn the ignition off and remove the key.
Using the RKE transmitter, operate the Door Locks several times while observing the
DRBIII
t.
Wait 10 seconds.
Does the DRBIII
t display RKE INTERFACE CIRCUIT SHORT TO VOLTAGE?
All
Yes
→ 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 voltage between ground and the RKE Interface circuit.
Is there any voltage present?
All
Yes
→ Go To 3
No
→ Replace the Sentry Key Remote Entry Module.
Perform BODY VERIFICATION TEST - VER 1.
206
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
3
Disconnect the Central Timer Module C1 connector.
Disconnect the SKREEM connector.
Turn the ignition on.
Measure the voltage between ground and the RKE Interface circuit.
Is there any voltage present?
All
Yes
→ Repair the RKE Interface circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
207
POWER DOOR LOCKS/RKE
RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - SKREEM —
Continued
Symptom:
THE ACM HAS UNLOCKED THE DOORS
When Monitored and Set Condition:
THE ACM HAS UNLOCKED THE DOORS
When Monitored:
Whenever the battery is above 10.0 volts and the module is connected.
Set Condition:
Whenever the CTM senses battery voltage for over 50ms on the Enhanced
Accident Report Driver circuit, this code will set. If the ACM senses a near deployment
impact (not enough to fire the airbag) this code may set.
POSSIBLE CAUSES
DTC PRESENT
POWERTRAIN DTC
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from ON to OFF to ON.
With the DRBIII
t, read DTC’s.
Operate the Door Locks several times while observing the DRBIII
t.
Wait 10 seconds.
Does the DRBIII
t display THE ACM HAS UNLOCKED THE DOORS?
All
Yes
→ Refer to symptom P1681 ACM CIRCUIT FAULT in the POWER-
TRAIN SERVICE INFORMATION.
Perform BODY VERIFICATION TEST - VER 1.
No
→ The condition that set this code is not present at this time. By
erasing the DTC the door locks should work properly at this time.
Perform BODY VERIFICATION TEST - VER 1.
208
POWER DOOR LOCKS/RKE
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