Mach-Lee
Well-Known Member
- First Name
- Lee
- Joined
- Jul 16, 2021
- Threads
- 207
- Messages
- 7,875
- Reaction score
- 15,827
- Location
- Wisconsin
- Vehicles
- 2022 Mach-E Premium AWD
- Occupation
- Sci/Eng
- Thread starter
- #1
Some 2021-2022 Mustang Mach-E built on or before 17-Jan-2022, 2022 Escape built on or before 03-Mar-2022, Bronco Sport built on or before 04-Mar-2022, 2022 Maverick built on or before 25-Jan-2022 and 2022 Transit built on or before 17-May-2022 may exhibit a powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0929:77 stored in the gear shift module (GSM). This may be due to the software in the GSM. To correct this condition, perform Pinpoint Test D. Refer to Workshop Manual (WSM), Section 307-05 > Diagnosis and Testing. If the GSM is not operating correctly, perform the replacement of the GSM. Do not perform a PMI after installing a new GSM assembly. The GSM is shipped with the latest software level. For claiming, use causal part 7P155 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
----End SSM----
Note: The WSM directs Pinpoint Test E (not D) for code P0929:77. Perhaps D was chosen since it includes a calibration update check in the steps. Editing the WSM to include an update check in Pinpoint Test E would have made more sense.
This is another GSM bulletin similar to what has been seen previously (similar to TSB 22-2343). Sometimes a software glitch causes the GSM to malfunction, which may set a stop safely now (SSN) error on the Mach-E. In general, if the P0929 code is observed, the GSM should be updated to the latest software level with FDRS, and if the problem persists, the GSM should be replaced. A new piece of critical information is NOT to perform a PMI (programmable module installation) on the new GSM if replaced. Apparently the versions in FDRS may be older than the currently shipping software.
----End SSM----
Note: The WSM directs Pinpoint Test E (not D) for code P0929:77. Perhaps D was chosen since it includes a calibration update check in the steps. Editing the WSM to include an update check in Pinpoint Test E would have made more sense.
This is another GSM bulletin similar to what has been seen previously (similar to TSB 22-2343). Sometimes a software glitch causes the GSM to malfunction, which may set a stop safely now (SSN) error on the Mach-E. In general, if the P0929 code is observed, the GSM should be updated to the latest software level with FDRS, and if the problem persists, the GSM should be replaced. A new piece of critical information is NOT to perform a PMI (programmable module installation) on the new GSM if replaced. Apparently the versions in FDRS may be older than the currently shipping software.
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