Transponder Communication Failure

Tests 786 - 788:

SYMPTOM
TRANSPONDER COMMUNICATION FAILURE

WHEN MONITORED
At ignition ON and during Key Programming Mode.

SET CONDITION
This failure condition exists when an invalid message format is received from the transponder after five consecutive transponder read attempts.

POSSIBLE CAUSES
- Sentry key failure
- Skim communication failure
- Transponder CRC failure