Rolling Code Failure

Tests 946 - 949:

SYMPTOM
ROLLING CODE FAILURE

TEST NOTE
This symptom is diagnosed using the test PCM STATUS 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 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
- Intermittent wiring harness problem
- Wiring harness inspection
- SKIM/PCM defective