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

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

DESCRIPTION

The hybrid vehicle transmission assembly consists of the planetary gear unit, generator (MG1) and motor (MG2). The planetary gear unit uses a planetary gear to split the engine output into mechanical power and electrical power in accordance with driving requests when the vehicle is being driven or the HV battery is being charged. When accelerating, motor (MG2) assists engine output by increasing vehicle driving force. Motor (MG2) also converts braking energy, which would otherwise be consumed in the form of heat during braking, into electrical energy. This recovered energy is stored in the HV battery. Generator (MG1) supplies power, which is used for charging the HV battery or driving motor (MG2), and also regulates the amount of electricity being generated. In addition, generator (MG1) is used as a starter motor to start the engine.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P3147-239 Transmission system

Drive force from motor (MG2) or the engine cannot be transmitted to the wheels.

The engine, generator (MG1), motor (MG2) or hybrid vehicle transmission assembly does not run smoothly due to a mechanical malfunction.

(1 trip detection logic)

  • Engine

  • Hybrid vehicle transmission assembly

  • Hybrid vehicle control ECU assembly

  • Transmission input damper assembly

 Does not come on

Master Warning Light:

Comes on
P3147-241 Transmission system

Hybrid vehicle transmission malfunction (input system lock):

When the vehicle is stopped, an engine cranking signal is sent but the generator (MG1) does not rotate.

The generator (MG1) or the engine does not rotate, or the planetary gear unit is malfunctioning.

(1 trip detection logic)

  • Engine

  • Hybrid vehicle transmission assembly

  • Hybrid vehicle control ECU assembly

  • Transmission input damper assembly

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. ECU Data List
P3147-239

  • Motor(MG2) Revolution

  • Motor(MG2) Torq

  • M(MG2) Trq Exec Val

  • Generator(MG1) Rev

  • Generator(MG1) Torq

  • G(MG1) Trq Exec Val

  • Engine Revolution

  • Calculate Load
P3147-241

CAUTION / NOTICE / HINT

Tech Tips


  • If DTC P3147-239 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.


    1. Drive the vehicle at approximately 30 km/h (12 mph) or more for approximately 5 seconds or more using the engine.

  • If DTC P3147-241 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.


    1. With the vehicle stopped and the shift lever in P, turn the power switch on (READY) and gradually depress the accelerator pedal so that the engine starts.

PROCEDURE


  1. 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.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      Only DTC P0335 is output or SFI system DTCs are not output. A
      DTC P0335 and other SFI system DTCs are output or any SFI system DTCs other than P0335 are output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (SFI SYSTEM) Click here

    A

  2. 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.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Proceed to
      DTCs other than P3147-239 and P3147-241 are not output.
      P3147-240 or P3147-242 is also output.
      P0A1D is also output.

    5. Turn the power switch off.


    P3147-240 or P3147-242 is also output.

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here

    P0A1D is also output.

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    DTCs other than P3147-239 and P3147-241 are not output.

  3. 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.

      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.

      OK
      The crankshaft rotates smoothly.

    4. Lower the vehicle.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION) Click here

    OK

  4. 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.


      Powertrain > Hybrid Control > Trouble Codes

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

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


      Powertrain > Engine and ECT > Trouble Codes

    7. Clear the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs
      Powertrain > Engine and ECT > Clear DTCs

    8. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK ENGINE RACING

    Result
    Proceed to
    OK
    NG

    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.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Engine Revolution
      Generator(MG1) Rev
    5. A01O9K4E06

      While the READY indicator is on, depress the accelerator pedal for 10 seconds.

      OK
      "Generator (MG1) Rev" is approximately 3.6 times "Engine Revolution".

      Tech Tips


      • 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 transmission 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 900 rpm Approximately 3200 rpm
      Approximately 1500 rpm Approximately 5400 rpm

    6. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here

    OK

  6. 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).

      Tech Tips

      If the wheels do not turn and DTC P3147-239 is output, replace the hybrid vehicle transmission assembly.

    3. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here

    OK

  7. 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 / Engine Revolution, Motor (MG2) Revolution, Generator (MG1) Rev.

    4. Read the Data List.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Engine Revolution
      Motor(MG2) Revolution
      Generator(MG1) Rev

    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 + 0.22 X Motor (MG2) Revolution" is 500 rpm or more and it is maintained for 1 second.

    7. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY Click here

  8. CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION)


    1. 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 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

    OK

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here

    NG

    REPAIR OR REPLACE ENGINE