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Home >> Ford >> 2018 >> Fusion Energi Titanium >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Pinpoint Tests (Hybrid) >> Pinpoint Tests BB: Transmission Control Module (TCM) Power Relay >> Test Procedure
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Test Procedure

  1. BB1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) 
    NOTE: Turn the ignition OFF for 15 seconds before carrying out the self-test or clearing DTCs. Refer to QUICK TEST DESCRIPTION , for additional information.
    NOTE: The DTC P0887 may set as a result of a low 12 volt battery concern.
    NOTE: The DTC P0562 and DTC U3003 may be set in addition to DTC P0887. Diagnose all other DTCs before entering this pinpoint test.

    Are DTCs P0886, P0887, P2531, or P2533 present? 

    Yes No
    GO to  BB2. If sent to this test from Pinpoint Test BC, GO to  BB2.
    For C-MAX, GO to  BB3.
    For all others, GO to  BB5.
  2. BB2 CHECK THE BATTERY AND CHARGING SYSTEM 
    • Check the battery and charging system voltages. Refer to the appropriate Charging System article.

    Are the battery and charging system voltages within specification? 

    Yes No
    For C-MAX, GO to  BB3. REPAIR as necessary. REFER to the appropriate Charging System article.
    For all others, GO to  BB5. Clear the SOBDMC DTCs. REPEAT the self-test.
  3. BB3 CHECK THE TCM POWER RELAY 
    • Carry out the TCM power relay component test. Refer to the appropriate Wiring Diagrams, Component Testing article.

    Does the TCM power relay pass the component test? 

    Yes No
    GO to  BB4. INSTALL a new TCM Power relay. Clear the SOBDMC DTCs. REPEAT the self-test.
  4. BB4 CHECK THE VOLTAGE TO THE TCM POWER RELAY 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) TCM Power Relay Connector, Harness Side (-)
    B+ - Pin 1, 3 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  BB5. REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  5. BB5 CHECK THE B+ CIRCUIT FOR VOLTAGE 
    • Ignition ON, engine OFF.
    • TCM-A connector disconnected.
    • Measure the voltage between:
    (+) TCM-A Connector, Harness Side (-)
    B+ - Pin 6 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  BB6. REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  6. BB6 CHECK THE TCMRC CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • For C-MAX,
    • Measure the resistance between:
    (+) TCM Power Relay Connector, Harness Side (-) TCM-A Connector, Harness Side
    TCMRC - Pin 2 TCMRC - Pin 40
    • For all others,
    • BJB-B connector disconnected.
    • Measure the resistance between:
    (+) BJB-B Connector, Harness Side (-) TCM-A Connector, Harness Side
    TCMRC - Pin 39 TCMRC - Pin 40

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  BB7. REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  7. BB7 CHECK THE TCMRC CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between:
    (+) TCM-A Connector, Harness Side (-)
    TCMRC - Pin 40 Ground

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  BB8. REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  8. BB8 CHECK THE TCMRC CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) TCM-A Connector, Harness Side (-)
    TCMRC - Pin 40 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test. GO to  BB9.
  9. BB9 CHECK FOR AN OPEN VPWR CIRCUIT 
    • Ignition OFF.
    • For C-MAX,
    • Measure the resistance between:
    (+) TCM Power Relay Connector, Harness Side (-) TCM-A Connector, Harness Side
    VPWR - Pin 5 VPWR - Pin 10, 9
    • For all others,
    • Measure the resistance between:
    (+) BJB-B Connector, Harness Side (-) TCM-A Connector, Harness Side
    VPWR - Pin 46 VPWR - Pin 10, 9

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  BB10. REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  10. BB10 CHECK THE TCM VPWR CIRCUIT FOR VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) TCM-A Connector, Harness Side (-)
    VPWR - Pin 29 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  BB11. REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  11. BB11 CHECK THE TCM POWER RELAY VPWR CIRCUIT FOR A SHORT TO VOLTAGE 
    • For C-MAX,
    • Measure the voltage between:
    (+) TCM Power Relay Connector, Harness Side (-)
    VPWR - Pin 5 Ground
    • For all others,
    • Measure the voltage between:
    (+) BJB-B Connector, Harness Side (-)
    VPWR - Pin 46 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test. GO to  BB12.
  12. BB12 CHECK THE TCM VPWR CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • BJB-B connector connected.
    • Measure the voltage between:
    (+) TCM-A Connector, Harness Side (-)
    VPWR - Pin 29 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test. For C-MAX, GO to PINPOINT TEST Z .
    For all others, GO to  BB13.
  13. BB13 CHECK THE VPWR CIRCUITS FOR VOLTAGE 
    • Ignition OFF.
    • BJB-B connector connected.
    • Connect a 5 amp fused jumper wire between the following:
    Point A TCM-A Connector, Harness Side Point B
    TCMRC - Pin 40 Ground
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) TCM-A Connector, Harness Side (-)
    VPWR - Pin 10, 9 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to PINPOINT TEST Z . INSTALL a new BJB.
    Clear the SOBDMC DTCs. REPEAT the self-test.
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