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

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

U0146:00 -- GFM 

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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