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HYBRID CONTROL SYSTEM, Diagnostic DTC:P3147-239, P3147-241

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DTC Code DTC Name
P3147-239 Transmission system
P3147-241 Transmission system
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DESCRIPTION

The hybrid vehicle transaxle assembly consists of the power split planetary gear unit, MG1, MG2 and the motor speed reduction planetary gear unit. The power split planetary gear unit uses a planetary gear to split engine output in accordance with driving requests while the vehicle is driven or the HV battery is charged. MG2 assists engine output while increasing vehicle drive force. MG2 also converts the energy, which would otherwise be consumed in the form of heat during normal braking, into electrical energy. This recovered energy is put back into the HV battery to perform regenerative braking. MG1 generates power, which is used for charging the HV battery or driving MG2, and also regulates the amount of electricity being generated. In addition, MG1 is used as a starter motor to start the engine.

DTC No. INF Code DTC Detection Condition Trouble Area
P3147 239 Hybrid vehicle transaxle input malfunction (shaft damaged)

  • Engine

  • Hybrid vehicle transaxle assembly

  • Wire harness or connector

  • Power management control ECU

  • Transmission input damper assembly
241 Hybrid vehicle transaxle input malfunction l ECU (input system lock)
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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (ENGINE AND ECT)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Check for DTCs.

      Result
      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. B

    5. Turn the power switch off.


  2. Click here

    CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS 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
      DTCs other than P3147-239 or P3147-241 are not output. A
      P3147-240 or P3147-242 is also output. B
      P0A1D is also output. C

    5. Turn the power switch off.


  3. Click here

    CHECK CRANKSHAFT PULLEY REVOLUTION (SHIFT LEVER IN P)


    1. With the shift lever in P and lift up the vehicle.

    2. 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.

      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.

      Result
      Result Proceed to
      The crankshaft rotates. A
      The crankshaft does not rotate. B

    3. Lower the vehicle.


  4. Click here

    CLEAR DTC


    1. Connect the GTS 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 DTCs and freeze frame data.

    6. Turn the power switch off.


  5. Click here

    CHECK ENGINE RACING


    1. Connect the GTS 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. A00087OE15
      Table 1.
      *1 Malfunction
      *2 Normal
      *3 Engine

      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.
      Tip:

      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

    6. Turn the power switch off.


  6. Click here

    CHECK CREEP MOVEMENT


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

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

      If the wheels do not turn and the reading on the GTS shows DTC P3147-239, replace the hybrid vehicle transaxle assembly.


  7. Click here

    INSPECT ENGINE SPEED


    1. Connect the GTS 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 (Click here)

    • NG

      REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY (Click here)

  8. Click here

    CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION)


    1. Turn the power switch on (IG) and move the shift lever to N.

    2. Lift up the vehicle.

    3. 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.

      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.

    4. Lower the vehicle.


    • OK

      REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY (Click here)

    • NG

      REPAIR OR REPLACE ENGINE