Rolling Code Failure

Test 1:

Test 2 - 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
- Replace SKIM and check DTCs
- Intermittent wiring harness problem
- PCM