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DTC    P0A0F-238    Engine Failed to Start

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DESCRIPTION

If the power management control ECU (HV CPU) detects that the engine or transmission gear has seized, the power management control ECU (HV CPU) will perform fail-safe control. Also, if a substance or object is preventing the engine or transmission internal components from rotating, the power management control ECU (HV CPU) will perform fail-safe control.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0A0F
238
Engine does not start even though it is being cranked (transaxle input malfunction [engine system])
  1. Hybrid vehicle transaxle assembly
  2. Transmission input damper assembly
  3. Power management control ECU
  4. Engine

A217594E01


INSPECTION PROCEDURE

HINT:
If this DTC is output, the engine or transmission gear may be seized. Be sure to check the level of the engine oil, automatic transmission fluid (ATF), and coolant before inspection.

1.CHECK DTC OUTPUT (HV)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

  1. Check if DTCs are output.

    Result:
    Result
    		Proceed to
    P0A0F-238 only is output.
    		A
    P0A1D (hybrid vehicle control ECU circuit malfunction) is output.
    		B

  1. Turn the power switch off.



B
GO TO DTC CHART (Click here)
A


2.CHECK CRANKSHAFT PULLEY REVOLUTION (PARK (P) SELECTED)

  1. Push the P position switch.

  1. Lift up the vehicle.

  1. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.

    CAUTION:
    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.

    NOTICE:
    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.



NG
Go to step 7
OK


3.CLEAR DTC (HV)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

  1. Read and record the DTCs and freeze frame data.

  1. Clear DTCs and freeze frame data.

  1. Turn the power switch off.


NEXT


4.CHECK ENGINE RACING

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Push the P position switch.

  1. Enter the following menus: Powertrain / Hybrid Control / Data List / Generator (MG1) Rev, Engine Revolution.

  1. Read the Data List.

  1. Turn the power switch on (READY).



    A212091E01

  1. 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

  1. Turn the power switch off.



NG
REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY (Click here)
OK


5.CHECK CREEP MOVEMENT

  1. Turn the power switch on (READY).

  1. Depress the brake pedal, move the selector lever to D, and release the brake pedal.

    OK:
    The wheels turn (the vehicle creeps forward).

  1. Turn the power switch off.



NG
REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY (Click here)
OK


6.CHECK ENGINE SPEED

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (READY).

  1. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor (MG2) Revolution, Generator (MG1) Rev, Engine Revolution.

  1. Read the Data List.

  1. Move the selector lever to D.

  1. Fully depress the accelerator pedal to accelerate the vehicle from a stop.

    NOTICE:
    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 + 0.27 X Motor (MG2) Revolution is 500 rpm or more and it is maintained for 1 second.

  1. Turn the power switch off.



NG
REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY (Click here)
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)  

7.CHECK CRANKSHAFT PULLEY REVOLUTION (SELECTOR LEVER IN N)

  1. Lift up the vehicle.

  1. Turn the power switch on (IG).

  1. Move the selector lever to N.

  1. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.

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

    NOTICE:
    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.



NG
REPAIR OR REPLACE ENGINE
OK

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY (Click here)