Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Ford >> 2021 >> F-150 Raptor >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System (Abs) And Stability Control >> Diagnosis And Testing >> Anti-Lock Brake System (ABS) and Stability Control >> Pinpoint Tests >> Pinpoint Test T: SASM Communication Concern With BCM >> Notes

Pinpoint Test T: SASM Communication Concern With BCM: Notes

Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.

Normal Operation and Fault Conditions 

With the ignition ON, the BCM sends messages to the SASM over the HS-CAN. If the SASM does not receive these messages within the specified time frame, the module sets a DTC. This can be due to a BCM failure, a circuit failure on the HS-CAN or an excessive load on the network. For information on the cruise control messages sent to the SASM by the BCM, REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Condition
SASM U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the SASM does not receive any messages from the BCM.
SASM U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Sets if the SASM receives invalid data in the BCM personality message.

Possible Sources 

scientia non olet · About Mike's Workshop Manuals