Normal Operation and Fault Conditions
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2019 Ford Expedition, 2018 Lincoln MKZ, 2018 Ford Transit-350 HD, 2018 Ford Transit-350, and 2018 Ford Transit-250. However, it is still accessible from the selected car via links, so may be relevant.
The BECMB provides battery voltage to the RCM and, if equipped, PAD indicator (vehicles without center stack display only). The BECMB compares HS-CAN1 messages to ignition voltage inputs. If the status of the HS-CAN1 message and the voltage input do not match, the BECMB sets a DTC.
If a fault is detected, the BECMB stores the appropriate DTC in memory and sends a message to the RCM over HS-CAN1 and HS-CAN2, indicating that a BECMB fault is present. Upon receipt of this message, the RCM sets DTC U0413:92 and sends a message to the IPC to illuminate the airbag warning indicator.
PPT BI BECMB DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1142:62 | Ignition Status 1: Signal Compare Failure | Sets when the status of the hard-wired ignition input to the BECMB does not match the ignition status reported from the HS-CAN1 |
| B13BF:12 | Run/Start Input: Circuit Short to Battery | Sets when the hardwired ignition input to the BECMB is inactive, but the BECMB receives an ignition status from the HS-CAN1 that contradicts the hardwired input status. |