Yes | CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new RTM. REFER to: Radio Transceiver Module (RTM) (419-10 Multifunction Electronic Modules, Removal and Installation). |
|---|---|
No | The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues. |
U0401:00, U0401:82
Normal Operation and Fault Conditions
With the ignition ON, the PCM sends vehicle speed data messages to the GWM along the HS-CAN1. The GWM relays the messages to the RTM using the MS-CAN 1. If the vehicle speed data messages are invalid or faulted, the RTM sets a DTC and the TPMS warning indicator is illuminated.
DTC Fault Trigger Conditions
DTC | Description | Fault Trigger Conditions |
|---|---|---|
U0401:00 Invalid Data Received from ECM / PCM "A": No Sub Type Information | This DTC sets in continuous memory if the vehicle speed message from the PCM is "invalid" or "faulted" instead of the actual vehicle speed data. | |
U0401:82 Invalid Data Received from ECM / PCM "A": Alive / Sequence Counter Incorrect / Not Updated | This DTC sets in continuous memory if the vehicle speed message from the PCM does not refresh. |
Possible Sources
Network communication concern GWM PCM RTM
PINPOINT TEST J : U0401:00, U0401:82
J1 CHECK THE RTM (RADIO TRANSCEIVER MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, carry out the RTM self-test.
Is DTC U0146:00 also present?
Yes | DIAGNOSE DTC U0146:00 before diagnosing DTC U0401:00 or U0401:82, GO to Pinpoint Test H |
|---|---|
No | GO to J2 |
J2 CHECK THE COMMUNICATION NETWORK
Ignition ON. Using a diagnostic scan tool, carry out the Network Test.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.