Rolling Code Failure

Tests 754 - 757:

Tests 758 - 762:

Tests 763 - 768:

Tests 769 - 770:

SYMPTOM
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
This condition exists when a PCM STATUS message is not received by the SKIM within 3.5 seconds of transmitting what the SKIM believes to be a "key code" message to the PCM. The "key code" sent by the SKIM may or may not be "valid" in this case.

POSSIBLE CAUSES
- Hard skim VIN mismatch
- PCM EEPROM DTC present
- Skim communication link failure
- Skim EEPROM failure
- Skim PCM failure
- Skim PCM problem
- Skim unidentified problem
- Skim VIN mismatch
- VIN does not match
- VIN mismatch not cleared