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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Electronic Power Assist Steering Component Testing >> PSCM DTC/Symptom Selection >> Symptom Chart - Steering System and NVH >> Unable To Replicate Customer's Intermittent Assist Concern During A Test Drive

Unable To Replicate Customer's Intermittent Assist Concern During A Test Drive

Possible Source Action
  • If lost communication or voltage DTCs exist in the PSCM or other vehicle modules, possible sources can be:
  • Fuse(s)
  • Wiring, terminals or connectors
GO to Pinpoint Test A 
  • If DTCs other than lost communication or voltage exist in the PSCM or other vehicle modules, the possible sources can be:
  • Module internal fault - PSCM
  • Module internal fault - other modules
REFER to appropriate DTC Chart and CARRY OUT the diagnostics listed for the DTC.
  • If no DTCs are present in the PSCM or other vehicle modules, the concern could be indicated by a TSB or a SSM.
  • TSBs existing for concern
  • GSBs existing for concern
  • SSMs existing for concern
  • FSAs existing for concern
CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions.
If there are not DTCs present and there are no service articles associated with this concern and the concern cannot be verified, RETURN the vehicle to the customer.