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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 76 (Hybrid Control System (2GR-FXS) - Diagnostic Codes (2 Of 6)) >> Hybrid Control System >> DTC P0A0F-238: Engine Failed to Start [11/2016 - ] >> Procedure

DTC P0A0F-238: Engine Failed to Start [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      Only DTC P0A0F-238 is output or any DTCs other than P0A1D (Hybrid Powertrain Control Module) are also output. A
      P0A1D (Hybrid Powertrain Control Module) is output. B
    5. Turn the power switch off.

    Result:  2

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2016 - 10/2017]  Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - ] 

    Result:  1

    A 

    See step  2

  2. CHECK CRANKSHAFT PULLEY REVOLUTION (P POSITION) 
    1. Check that the shift lever is in P.
    2. Lift up the vehicle.
    3. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.
      WARNING:

      Do not turn the power switch on (READY) while performing this inspection. Be sure to turn the power switch off before performing this inspection, to prevent the engine from starting.

      NOTE:

      Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

      OK

      The crankshaft rotates smoothly.

    4. Lower the vehicle.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  7

    Result:  1

    OK 

    See step  3

  3. CLEAR DTC 

    See step  3

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  4

  4. CHECK ENGINE RACING 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Generator (MG1) Rev, Engine Revolution.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Engine Revolution
      Generator(MG1) Rev
    4. Read the Data List.
    5. While the READY indicator is on, depress the accelerator pedal for 10 seconds.

      OK

      The engine races

      HINT: 

      • If the engine does not race and DTC P3147-239 (Transmission system) is output or generator (MG1) operates but the engine does not crank, replace the hybrid vehicle transaxle assembly.
      • Refer to the graph for Data List confirmation of "Generator (MG1) Rev" and " Engine Revolution".
      Data List Engine Rev Generator (MG1) Rev
      Reference Value Approximately 1000 rpm Approximately 3600 rpm
      Approximately 1500 rpm Approximately 5400 rpm
      Approximately 2500 rpm Approximately 9000 rpm
      GTY454259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

    Result:  1

    OK 

    See step  5

  5. CHECK CREEP MOVEMENT 
    1. Turn the power switch on (READY).
    2. Depress the brake pedal, move the shift lever to D, and release the brake pedal.

      OK

      The wheels turn (the vehicle creeps forward).

    3. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

    Result:  1

    OK 

    See step  6

  6. INSPECT ENGINE SPEED 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor (MG2) Revolution, Generator (MG1) Rev, Engine Revolution.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Engine Revolution
      Motor(MG2) Revolution
      Generator(MG1) Rev
    4. Read the Data List.
    5. Move the shift lever to D.
    6. Fully depress the accelerator pedal when the vehicle speed is 10 km/h (6 mph) or more.
      NOTE:

      Perform this test only in an appropriate safe location, in accordance with all local laws.

      OK

      The difference between "Engine Revolution" and "0.28 X Generator (MG1) Rev + 0.29 X Motor (MG2) Revolution" is 500 rpm or more and it is maintained for 1 second.

      HINT: 

      If the engine races or DTC P3147-241 (Transmission system) is output, replace the transmission input damper assembly.

    7. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

    Result:  2

    NG 

    REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

  7. CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION) 
    1. Lift up the vehicle.
    2. Move the shift lever to N.
    3. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.
      WARNING:

      Do not turn the power switch on (READY) while performing this inspection. Be sure to turn the power switch off before performing this inspection, to prevent the engine from starting.

      NOTE:

      Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

      OK

      The crankshaft rotates smoothly.

    4. Lower the vehicle.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

    Result:  2

    NG 

    REPAIR OR REPLACE ENGINE 

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