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 transaxle assembly consists of the power split planetary gear unit, generator, motor, 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. motor assists engine output while increasing vehicle drive force. motor 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 motor, and also regulates the amount of electricity being generated. In addition, generator is used as a starter motor to start the engine.

DTC No. INF Code DTC Detection Condition Trouble Area
P3147 239

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 transaxle assembly

  • Wire harness or connector

  • Hybrid vehicle control ECU

  • Transmission input damper assembly
241

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

(1 trip detection logic)
Related Data List
DTC No. 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

The following items can be helpful when performing repairs:


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 ignition switch to 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 ignition switch to ON (IG).

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

    4. Check if DTCs are output.

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

    5. Turn the ignition 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 ignition switch to ON (IG).

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

    4. Check if DTCs are output.

      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 ignition switch off.


    B

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    C

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  3. 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 ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition 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.


    B

    CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION) Click here

    A

  4. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to 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 ignition switch off.


    NEXT

  5. CHECK ENGINE RACING


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON (READY).

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

    4. Read the Data List.

    5. A004EPME01
      *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.

      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 transaxle assembly.

      • 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 ignition switch off.


    NG

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    OK

  6. 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).

      Tech Tips

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


    NG

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    OK

  7. CHECK ENGINE SPEED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to 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 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 + 0.27 X Motor (MG2) Revolution is 500 rpm or more and it is maintained for 1 second.

      Tech Tips

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

    7. Turn the ignition switch off.


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY Click here

  8. 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.

      CAUTION:

      Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition 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.

    4. Lower the vehicle.


    OK

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    NG

    REPAIR OR REPLACE ENGINE