Rolling Code Failure

Tests 1 - 2:

Tests 3 - 4:

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
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.

POSSIBLE CAUSES
- Verifying PCM VIN
- Intermittent wiring harness problem
- PCM