Chrysler PT Cruiser 2001 Service Manual Supplement page 2705

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 a PCM reset.
Set Condition: This condition exists 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: Monitored with the ignition on.
Set Condition: This condition exists when the VIN received from the PCM does not match
the VIN stored in the SKIM's EEPROM.
PCM
INTERMITTENT WIRING HARNESS PROBLEM
VERIFYING PCM VIN
TEST
1 Using the DRB, erase the codes.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on and wait 2 minutes.
Using the DRB, read the codes.
Does the DRB display the code that was previously erased?
Yes → Go To 2
→ Go To 4
No
VEHICLE THEFT/SECURITY
POSSIBLE CAUSES
ACTION
245
APPLICABILITY
All