PINPOINT TEST O : DTC (DIAGNOSTIC TROUBLE CODE) U0257:00
O1 VERIFY THE CUSTOMER CONCERN
Ignition ON. Verify there is an observable symptom present.
Is an observable symptom present?
Yes | GO to O2 |
|---|---|
No | The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. CLEAR the DTC. |
O2 CHECK THE COMMUNICATION NETWORK
Using a diagnostic scan tool, perform the network test.
Do the FCDIM and the GWM pass the network test?
Yes | GO to O3 |
|---|---|
No | REFER to: Communications Network (418-00 Module Communications Network) . |
O3 PERFORM THE FCDIM (FRONT CONTROL/DISPLAY INTERFACE MODULE) SELF-TEST
Using a diagnostic scan tool, perform the FCIM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes | REFER to: Information and Entertainment System (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Diagnosis and Testing). |
|---|---|
No | GO to O4 |
O4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes | REFER to: Communications Network (418-00 Module Communications Network) . |
|---|---|
No | GO to O5 |
O5 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs). Operate the system and test for normal operation. Check the PAM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
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.