Pinpoint Test F: Lost Communication With Another Module
WARNING: This page is about a different variant/trim than selected.
- Refer to All Wheel Drive (AWD)
for schematic and connector information. Refer to Module Communications Network
for schematic and connector information.
Normal Operation and Fault Conditions
The AWD module expects to receive network data from other modules on HS-CAN1. The AWD will set a DTC when it has not received messages from a module for more than 12 seconds. Other modules that require data from the suspect module may set lost communication DTC.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition AWD U0100:00 Lost Communication With ECM/PCM "A": No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0101:00 Lost Communication with TCM: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module "A": No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0126:00 Lost Communication With Steering Angle Sensor Module: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0137:00 Lost Communication With Trailer Brake Control Module: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0138:00 Lost Communication with All Terrain Control Module: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0140:00 Lost Communication With Body Control Module: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0146:00 Lost Communication With Serial Data Gateway "A": No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. AWD U0212:00 Lost Communication With Steering Column Control Module: No Sub Type Information The AWD module has not received messages from the suspect module for more than 12 seconds. Possible Sources
- Suspect module
- Battery voltage concern
- HS-CAN1
- F1 CHECK FOR LOST COMMUNICATION DTC (DIAGNOSTIC TROUBLE CODE) IN OTHER MODULES
- Enter the following diagnostic mode: Run all CMDTC.
Do any other modules on the vehicle also have a Lost Communication DTC with the suspect module?
Yes REFER to: Communications Network No GO to F2 - F2 REVIEW CMDTC (CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODE) FOR LOW VOLTAGE DTC (DIAGNOSTIC TROUBLE CODE)
- Review all module CMDTC for low voltage DTC
Do any modules have low voltage DTC set?
Yes REFER to: Charging System - 1.5L EcoBoost (132kW/180PS) - I3 (Y1) . REFER to: Charging System - 2.0L EcoBoost (177kW/240PS) - MI4 No GO to F3 - F3 INSPECT HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CONNECTORS
- Ignition OFF.
- Refer to Module Communications Network for schematic and connector information.
- DISCONNECT and INSPECT the HS-CAN1 connectors between the AWD and the suspect module.
- Repair:
- corrosion (INSTALL new connector or terminals)
- damaged or bent pins (INSTALL new terminals/pins)
- pushed-out pins (INSTALL new pins)
- Connect all connectors. Make sure each connector seats and latches correctly.
Is the concern still present?
Yes CHECK for an applicable TSB, GSB, SSM, or FSA. If a service bulletin exists for this concern, discontinue this test and follow bulletin instructions. If none address this concern, INSTALL a new suspect module. No The system is now operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.