Rolling Code Failure; Vin Mismatch - Chrysler Pacifica CS 2004 Service Manual

Symptom List:

ROLLING CODE FAILURE

VIN MISMATCH

Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be ROLLING CODE FAILURE.
When Monitored and Set Condition:
ROLLING CODE FAILURE
When Monitored: At ignition on, after ignition on during any rolling code handshake that
occurs with the PCM due to a SKIM or PCM reset.
Set Condition: When a PCM STATUS message with a Valid Key status is not received by
the SKIM within 3.5 seconds of transmitting the last Valid Key Code message to the PCM.
VIN MISMATCH
When Monitored: With the ignition on.
Set Condition: When the VIN received from the PCM does not match the VIN stored in
the SKIM's EEPROM.
VERIFYING PCM VIN
REPLACE SKREEM AND CHECK DTC'S
INTERMITTENT WIRING HARNESS PROBLEM
PCM
TEST
1 With the DRBIII , erase the SKREEM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on and wait 2 minutes.
With the DRBIII , read the SKREEM DTCs.
Does the DRBIII display the DTC that was previously erased?
Yes → Go To 2
→ Go To 4
No
POSSIBLE CAUSES
ACTION
303
SKREEM
APPLICABILITY
All