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Home >> Ford >> 2020 >> Escape Titanium Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Pinpoint Tests (Hybrid) >> Pinpoint Tests TP: Traction Motor OVERSPEED >> Test Procedure
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Test Procedure

  1. TP1 CHECK FOR SELF-TEST DTCS 
    • Ignition ON, engine OFF.

    Is DTC P0A44 present? 

    Yes No
    GO to  TP2. Unable to duplicate or identify the concern at this time.
    RETURN to SYMPTOM CHARTS for further direction.
  2. TP2 CHECK FOR CORRECT TRACTION MOTOR RPM DURING THE ROAD TEST 
    • Clear the SOBDMC DTCs.
    • Access the SOBDMC and monitor the M_SPEED (RPM) PID.
    • Access the SOBDMC and monitor the VSS (SPD) PID.
    • Road test the vehicle.
    • Record traction motor RPM at different vehicle speeds.
      Vehicle Speed KM/H (MPH) Traction Motor RPM
      0 (0) 0
      26 (16) 1, 996
      55 (34) 4, 392
      80 (50) 6, 389
      105 (65) 8, 306

    Does the traction motor RPM correspond with the vehicle speed? 

    Yes No
    GO to  TP3. INSTALL a new Transmission assembly. REFER to the Automatic Transmission article.
    Clear the SOBDMC DTCs. REPEAT the self-test.
  3. TP3 CHECK THE MOTOR RESOLVER CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Transmission Assembly connector disconnected.
    • TCM-B connector disconnected.
    • Measure the resistance between:
      (+) Transmission Assembly Connector, Harness Side (-) TCM-B Connector, Harness Side
      MR1 - Pin 26 MR1 - Pin 6
      MR2 - Pin 25 MR2 - Pin 12
      MS1 - Pin 21 MS1 - Pin 11
      MS2 - Pin 22 MS2 - Pin 5
      MC1 - Pin 23 MC1 - Pin 24
      MC2 - Pin 24 MC2 - Pin 18

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  TP4. REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  4. TP4 CHECK THE MOTOR RESOLVER CIRCUITS FOR A SHORT TO GROUND 
    • Measure the resistance between:
      (+) Transmission Assembly Connector, Harness Side (-)
      MR1 - Pin 26 Ground
      MR2 - Pin 25 Ground
      MS1 - Pin 21 Ground
      MS2 - Pin 22 Ground
      MC1 - Pin 23 Ground
      MC2 - Pin 24 Ground

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  TP5. REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test.
  5. TP5 CHECK THE MOTOR RESOLVER CIRCUITS FOR A SHORT TO VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) Transmission Assembly Connector, Harness Side (-)
      MR1 - Pin 26 Ground
      MR2 - Pin 25 Ground
      MS1 - Pin 21 Ground
      eMS2 - Pin 22 Ground
      MC1 - Pin 23 Ground
      MC2 - Pin 24 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test. GO to  TP6.
  6. TP6 CHECK FOR DTCS 
    • Carry out the SOBDMC self-test.

    Is DTC P0C2F present? 

    Yes No
    GO to PINPOINT TEST TX . Unable to duplicate or identify the concern at this time.
    RETURN to SYMPTOM CHARTS for further direction.
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