Network Message Chart
PCM NETWORK INPUT MESSAGES
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| PATS start request target 1 | BCM | This is a request from the BCM for the PCM ID. The request is part of the PATS process of the BCM to check the PCM ID with the ID stored in the BCM. |
BCM NETWORK INPUT MESSAGES
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| PATS status enable/disable target data | PCM | This is a response from the PCM to the BCM request. The BCM compares the PCM ID to the ID stored within the BCM. If the PCM ID response is correct, the engine is allowed to start. |
| Passive entry control data | RFA module | This data contains the RFA module ID (which is checked by the BCM) and information such as if an IA key has been detected, how many were detected, and if it is a programmed key. When the BCM confirms the RFA module ID and detects a programmed key inside the vehicle, it allows the ignition state to change and the engine to start. |
RFA MODULE NETWORK INPUT MESSAGES
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Passive entry target data | BCM | This is a response to the BCM request for the RFA module ID and IA key data. The request is part of the PATS process of the BCM to check the RFA module ID with the ID stored in the BCM. If the RFA module ID and IA key data response is correct, the engine is allowed to start |
| Door ajar status | BCM | The RFA module uses this information to determine if it should search the interior of the vehicle for an IA key. It searches for an IA key if any door or luggage compartment lid is opened and then closed. |