LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2021 >> Bronco First Edition, 2D Utility >> 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 AU: The TPMS (Tire Pressure Monitoring System) Warning Indicator Is Never Or Always On

Pinpoint Test AU: The TPMS (Tire Pressure Monitoring System) Warning Indicator Is Never Or Always On

  1. Normal Operation and Fault Conditions 

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

    If the tire pressure warning indicator message is missing for 5 seconds or less, the TPMS warning indicator remains in its last indication state (on or off), based upon the last message received.

    If the tire pressure warning indicator message is missing for 5 seconds or longer, the IPC flashes the TPMS warning indicator for approximately 75 seconds, then illuminates the indicator.

    Possible Sources 

    • Low tire pressure
    • Communication concern
    • TPMS
    • BCM
    • GWM
    • IPC

  2. AU1 CHECK THE TIRE PRESSURE

    • Verify the tire pressure in all tires meets the recommended tire pressures on the vehicle certification label.

    Do all the tires meet the recommended tire pressures? 

    Yes  GO to  AU2
    No  CORRECT the tire pressures.

  3. AU2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND

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

    • Access the IPC and control the TPMWARN_LMPPID

    • Command the TPMS warning indicator on and off.

    Does the TPMS warning indicator illuminate when commanded on and turn off when commanded off? 

    Yes  GO to  AU3
    No  GO to  AU6

  4. AU3 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the Diagnostic Trouble Code (DTC) Chart .
    No  GO to  AU4

  5. AU4 PERFORM THE BCM (BODY CONTROL MODULE) SELF-TEST

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

    Are any DTCs recorded? 

    Yes  REFER to the Diagnostic Trouble Code (DTC) Chart .
    No  GO to  AU5

  6. AU5 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: Controller Area Network (CAN) Module Communications Network .
    No  If the TPMS warning indicator is never on, the system is operating correctly. If the TPMS warning indicator is always on, DIAGNOSE the TPMS. REFER to: Tire Pressure Monitoring System (TPMS) .

  7. AU6 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.
scientia non olet · About LEMON Manuals