Network Message Chart
BCM NETWORK INPUT MESSAGES
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| PATS status enable/disable target data | PCM | The PCM sends the BCM a challenge request for a valid ID. |
| IA key status | RFA module | Provide the BCM with the passive key data. The data contains information such as if a passive key has been detected, how many were detected, battery status and if it is a programmed key. |
| IA system status | RFA module | The response from the BCM request for the RFA module ID. If the RFA module ID response is incorrect, then the PATS prevents the engine from starting. |
PCM NETWORK INPUT MESSAGES
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| PATS start request target data | BCM | The response from the BCM supplying the PCM challenge ID. If the BCM ID response is incorrect, then the PATS prevents the engine from starting. |
RFA MODULE NETWORK INPUT MESSAGES
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Intelligent Access (IA) request target data | BCM | A request for the RFA module ID. |
| Door status | BCM | Used by the RFA module to determine if it should search the interior of the vehicle for a passive key. It searches for a key if any door or liftgate/luggage compartment lid is opened and then closed. |