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Home >> Ford >> 2021 >> Mustang Mach 1, Automatic Trans >> Repair and Diagnosis >> Electrical >> Gauges >> Instrumentation, Message Center And Warning Chimes (2 Of 2) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test S: The HUD (Head Up Display) Performance Shift Indication Is Never On

Pinpoint Test S: The HUD (Head Up Display) Performance Shift Indication Is Never On

  1. Normal Operation and Fault Conditions 

    See HUD Performance Shift Indication. REFER to: Message Center - System Operation and Component Description .

    Possible Sources 

    • HUD concern
    • PCM concern
    • IPC

  2. S1 VERIFY THE PERFORMANCE SHIFT INDICATION FUNCTION IS TURNED ON

    • NOTE: The IPC and message center navigation can be found in the Owner's Literature.

      Using the message center switch, verify through the message center the performance shift indication function is turned on.

    Is the performance shift indication function turned on? 

    Yes  GO to  S2
    No  Turn on the performance shift indication function.
  3. S2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform the IPC self-test.

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to DTC Chart: Instrument Panel Cluster (IPC) .
    No  GO to  S3
  4. S3 PERFORM THE HUD (HEAD UP DISPLAY) SELF-TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform the HUD self-test.

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  DIAGNOSE the HUD Diagnostic Trouble Codes (DTCs). REFER to: Collision Warning and Collision Avoidance System
    No  GO to  S4
  5. S4 RETRIEVE THE RECORDED DTCS FROM THE PCM (POWERTRAIN CONTROL MODULE) SELF-TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform the PCM self-test.

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the appropriate Electronic Engine Controls article.
    No  GO to  S5
  6. S5 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
    No  INSTALL a new HUD.