Possible Sources
PINPOINT TEST F : U0121:00
F1 CHECK THE COMMUNICATION NETWORK
Ignition ON. Using a diagnostic scan tool, carry out the Network Test.
Does the ABS module pass the Network Test?
Yes | GO to F2 |
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No | DIAGNOSE the ABS module does not respond to the diagnostic scan tool. REFER to: Communications Network (418-00 Module Communications Network) . |
F2 CHECK THE VDM (VEHICLE DYNAMICS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, carry out the VDM self-test. Clear the Diagnostic Trouble Codes (DTCs). Ignition OFF. Ignition ON. Using a diagnostic scan tool, carry out the VDM self-test. Record the VDM Diagnostic Trouble Codes (DTCs).
Is DTC U0121:00 retrieved again?
Yes | GO to F3 |
|---|---|
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. |
F3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE VDM (VEHICLE DYNAMICS CONTROL MODULE) SELF-TEST
Check the recorded Diagnostic Trouble Codes (DTCs) from the VDM self-test.
Is DTC P0562:16, P0563:17, P1794:17 or P1794:18 present in the VDM?
Yes | If DTC P0562:16 or P1794:18 is present, GO to Pinpoint Test A If DTC P0563:17 or P1794:17 is present, GO to Pinpoint Test B |
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No | GO to F4 |
F4 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE
Using a diagnostic scan tool, carry out the ABS module self-test.
Are any Diagnostic Trouble Codes (DTCs) present in the ABS module?
Yes | DIAGNOSE the ABS module Diagnostic Trouble Codes (DTCs). REFER to: Anti-Lock Brake System (ABS) and Stability Control (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing). |
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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.