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Home >> Ford >> 2021 >> Escape Titanium Plug-In Hybrid >> 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 I: The Analog Tachometer Is Inoperative

Pinpoint Test I: The Analog Tachometer Is Inoperative

  1. Normal Operation and Fault Conditions 

    See Tachometer. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

    If the IPC does not receive the engine rpm data from the PCM for more than 5 seconds, the IPC defaults the tachometer to 0 rpm.

    Possible Sources 

    • Communication concern
    • PCM
    • GWM
    • IPC

  2. I1 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

    • Check for recorded Diagnostic Trouble Codes (DTCs).

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the IPC DTC Chart.
    No  GO to  I2

  3. I2 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (DTCs).

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Communications Network
    No  GO to  I3

  4. I3 PERFORM THE TACHOMETER ACTIVE COMMAND

    • Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).

    • Access the IPC and control the TACH_IND (%) PID

    • NOTE: Make sure to set the scan tool to 0 rpm before beginning this step.

      Command the tachometer in 10% increments while monitoring the tachometer.

    Does the tachometer increase approximately 800 rpm with each 10% increment? 

    Yes  DIAGNOSE all PCM Diagnostic Trouble Codes (DTCs). REFER to the appropriate Electronic Engine Controls article.
    No  GO to  I4

  5. I4 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the IPC connector.

    • Repair:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect the IPC connector. Make sure it seats and latches correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC. REFER to: Instrument Panel Cluster (IPC) 
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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