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DTC P3147-79: Transmission (Shaft) Mechanical Linkage Failure: Notes

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1. - 

Outline of diagnosis: 

Driving force of the motor or engine cannot be transmitted to the tires

Smooth rotation is not possible due to mechanical fault of the engine, generator, motor or transaxle

(1 trip detection logic)

Trouble symptom: 

Hybrid system stopped

CAUTION:
G13618146Courtesy of SUBARU OF AMERICA, INC.
  1. CHECK DTC  .

    Read the DTC of [Engine Control System] using the Subaru Select Monitor. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>DIAGNOSTIC TROUBLE CODE (DTC) .

    NOTE:
    Related DTC
    P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT
    P0336 CRANKSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE

    Are any DTCs listed in reference above displayed?

    Yes  : Perform the diagnosis for the displayed DTCs. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT . Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC P0336 CRANKSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE .

    No  : Go to  2.

  2. CHECK CRANK PULLEY ROTATION (P POSITION)  .
    1. Check that the shift is placed in P position.
    2. Lift up the vehicle at all wheels.
    3. Rotate the crank pulley clockwise by hand and check if the crank shaft rotates.
      CAUTION: Turn to READY ON during inspection. Be sure to check for IG OFF before inspection to prevent the engine from starting.
      NOTE: It is occasionally difficult to rotate the crank pulley due to resistance with compression in the engine. Therefore check whether or not the rotation can be done (locked/unlocked) by applying appropriate torque by hand (a torque that can rotate the crank pulley in normal engine condition of the same type).

    Does the crank pulley rotate?

    Yes  : Go to  3.

    No  : Go to  6.

  3. CHECK ENGINE RACING  .
    1. Using the Subaru Select Monitor, read and record the following DTCs and freeze frame data. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>FREEZE FRAME DATA . Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>FREEZE FRAME DATA .
      • Engine
      • P-HEV Hybrid Powertrain Control
    2. Using the Subaru Select Monitor, perform the following clear memory. Ref. to COMMON (DIAG)>CLEAR MEMORY .
      • Engine
      • P-HEV Hybrid Powertrain Control
    3. Check that the shift is placed in P position.
    4. Using the Subaru Select Monitor, display the following items in the [Data Monitor] of [P-HEV Hybrid Powertrain Control]. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DATA MONITOR .
      • Engine Speed
      • Generator Revolution
    5. With the READY light illuminating, depress the accelerator pedal for 10 seconds.
    6. Check the revolution speed.
    NOTE:
    • Reference value
      Item Engine speed Generator revolution speed
      Condition Approx. 1000 rpm Approx. 3400 rpm
      Approx. 1500 rpm Approx. 5100 rpm
      Approx. 2000 rpm Approx. 6800 rpm
    • Alignment chart
    G13618147Courtesy of SUBARU OF AMERICA, INC.

    Does [Generator Revolution] become approximately 3.4 times of [Engine Speed]? (See the reference values and alignment chart above)

    NOTE: When the engine is not racing and DTC P314779 ([TRANSMISSION (SHAFT) MECHANICAL LINKAGE FAILURE]) is displayed as a result of reading DTC using the Subaru Select Monitor, or when the generator turns but the engine cranking does not occur, replace Transmission assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>TRANSMISSION ASSEMBLY .

    Yes  : Go to  4.

    No  : Replace Transmission assembly and Damper (with torque limiter). Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>TRANSMISSION ASSEMBLY . Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>FLYWHEEL .

  4. CHECK CREEP RUNNING  .
    1. Turn to READY ON.
    2. Depress the brake pedal and shift to D position. Then, release the brake pedal.
    3. Check the tires for smooth rotation (check whether creep running is possible).

    Do the tires rotate? (Is creep running possible?)

    Yes  : Go to  5.

    No  : Replace Transmission assembly and Damper (with torque limiter). Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>TRANSMISSION ASSEMBLY . Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>FLYWHEEL .

  5. CHECK ENGINE SPEED AT ACCELERATION  .
    1. Using the Subaru Select Monitor, display the following items in the [Data Monitor] of [P-HEV Hybrid Powertrain Control]. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DATA MONITOR .
      • Engine Speed
      • Generator Revolution
      • Motor Revolution
    2. Shift to D position.
    3. Fully accelerate from the vehicle speed at 10 km/h (6.2 MPH) or more.
      CAUTION: Check the safety around the vehicle and perform the test.
    4. Check the revolution speed.

    Does the difference (absolute value) of 500 r/min or more between "[Engine Speed]" and "0.29 x [Generator Revolution] + 0.17 x [Motor Revolution]" continue for one second or more?

    Yes  : Replace Transmission assembly and Damper (with torque limiter). Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>TRANSMISSION ASSEMBLY . Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>FLYWHEEL .

    No  : Replace Damper (with torque limiter). Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>FLYWHEEL .

  6. CHECK CRANK PULLEY ROTATION (N POSITION)  .
    1. Lift up the vehicle at all wheels.
    2. Depress the brake pedal and shift the select lever to N position.
    3. Rotate the crank pulley clockwise by hand and check if the crank shaft rotates.
      CAUTION: Turn to READY ON during inspection. Be sure to check for IG OFF before inspection to prevent the engine from starting.
      NOTE: It is occasionally difficult to rotate the crank pulley due to resistance with compression in the engine. Therefore check whether or not the rotation can be done (locked/unlocked) by applying appropriate torque by hand (a torque that can rotate the crank pulley in normal engine condition of the same type).

    Does the crank pulley rotate?

    Yes  : Replace Transmission assembly and Damper (with torque limiter). Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>TRANSMISSION ASSEMBLY . Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>FLYWHEEL .

    No  : Replace Damper (with torque limiter), and repair or replace the engine. Ref. to SPECIFICATION . Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>FLYWHEEL .

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