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Pinpoint Test J : U0146:00 - GFM (Generic Function Module): Notes

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

With the ignition ON, the GWM sends messages to the GFM using the MS-CAN2. If the GFM does not receive these messages within a predetermined time frame, the GFM sets a DTC. For information on the messages sent to the GFM by the GWM refer to the Network Message Chart. REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0146:00 Lost Communication with Gateway "A": No Sub Type Information This DTC sets in continuous memory and on-demand in the GFM if any of the GWM messages are missing. This can be due to a GWM failure, a circuit failure on the MS-CAN2 or an excessive load on the network.

Possible Sources 

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