VIN Checksum Error

Test 1:

SYMPTOM
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.

POSSIBLE CAUSES
- Powertrain control module