DTC Fault Trigger Conditions
Description | Fault Trigger Conditions |
|---|---|
U0257:00 Lost Communication With Front Controls / Display Interface Module: No Sub Type Information | Set by the ACM and APIM when Infotainment Controller Area Network (I-CAN) network messages are missing from the FCDIM for more than 5 seconds with the ignition in RUN. |
DTC
Possible Source
FCDIM
PINPOINT TEST AP : U0257:00
AP1 VERIFY THE CUSTOMER'S CONCERN
Ignition ON. Verify there is an observable symptom present.
Is an observable symptom present?
Yes | GO to AP2 |
|---|---|
No | The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. |
AP2 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0257:00
Ignition ON. Using a diagnostic scan tool, clear all Continuous Memory Diagnostic Trouble Codes (CMDTCs). Ignition OFF. Ignition ON. Wait at least 10 seconds. Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Is DTC U0257:00 set in the ACM or APIM?
Yes | GO to AP3 |
|---|---|
No | The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. |
AP3 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, perform the self-test for the following modules:
ACM APIM FCDIM
Are any low or high voltage Diagnostic Trouble Codes (DTCs) recorded in the ACM, APIM, or FCDIM?
Yes | • For DTC U3003:16, GO to Pinpoint Test AQ • For DTC U3003:17, GO to Pinpoint Test AR |
|---|---|
No | GO to AP4 |
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.