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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes - (Hybrid) (1 Of 8) >> Hybrid Control System >> DTC P0A0F-238: Engine Failed to Start [10/2014 - 10/2015] >> Procedure

DTC P0A0F-238: Engine Failed to Start [10/2014 - 10/2015]: Procedure

  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.

      Result

      Result Proceed to
      P0A0F-238 only is output. A
      P0A1D (Hybrid Powertrain Control Module) is output. B
    5. Turn the power switch off.

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

    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.

    NG 

    See step  7

    OK 

    See step  3

  3. CLEAR DTC 
    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. Read and record the DTCs and freeze frame data.
    5. Clear the DTCs and freeze frame data.
    6. Turn the power switch off.

    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.
    4. Read the Data List.
    5. While the READY indicator is on, fully depress the accelerator pedal for 10 seconds.

      OK

      Generator (MG1) Rev increases to approximately 3.6 times that of Engine Revolution.

      HINT: 

      Refer to the graph for Data List confirmation of "Generator (MG1) Rev" and " Engine Revolution".

      Data List Engine Rev MG1 Rev
      Reference Value Approximately 1000 rpm Approximately 3600 rpm
      Approximately 1500 rpm Approximately 5400 rpm
      Approximately 2500 rpm Approximately 9000 rpm
      GTY586330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Turn the power switch off.

    NG 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    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.

    NG 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    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.
    4. Read the Data List.
    5. Move the shift lever to D.
    6. Fully depress the accelerator pedal to accelerate the vehicle from a stop.
      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.

    7. Turn the power switch off.

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    NG 

    REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

  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.

    OK 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    NG 

    REPAIR OR REPLACE ENGINE 

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