Vin Checksum Error; Vin Previously Stored - Dodge Ram 2004 Service Manual

INSTRUMENT CLUSTER
Symptom List:

VIN CHECKSUM ERROR

VIN PREVIOUSLY STORED

Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be VIN CHECKSUM ERROR.
When Monitored and Set Condition:
VIN CHECKSUM ERROR
When Monitored: With the ignition on.
Set Condition: Once the Instrument Cluster learns a valid VIN and another valid VIN is
transmitted on the bus. The Instrument Cluster decodes the VIN that is transmitted on
the bus by the PCM. If the VIN is valid the Instrument Cluster stores the information. If
the VIN information does not equate to the encrypted value then the fault is set.
VIN PREVIOUSLY STORED
When Monitored: With the ignition on.
Set Condition: Once the Instrument Cluster learns a valid VIN and another VIN is
transmitted on the bus. This code can only be set if a PCM or MIC has been exchanged or
swapped from another vehicle. The VIN is embedded in both the cluster and the PCM and
cannot be used in any other vehicle.
POWERTRAIN CONTROL MODULE
TEST
1 NOTE: The V.I.N. is embedded into the Instrument Cluster memory during
production and can not be modified. Do not attempt to swap a cluster from
one vehicle to another. Refer to the Instrument Cluster Caution in the
Service Information.
NOTE: This code will only be set if the PCM has been exchanged or
swapped into this vehicle from another.
If any components have been exchanged or swapped , reinstall the original parts.
With the DRBIII , erase DTCs.
Cycle the ignition.
With the DRBIII , read DTCs.
If this code resets, view repair.
Repair
POSSIBLE CAUSES
ACTION
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
440
APPLICABILITY
All