Labor Time:
WRX

Fail
Code

CVT Diagnosis

B303986

0.6

0.6

0.6

CVT Replace and TCM Update/Check *

C303186

5.2

5.2

4.8

QMR Submission with CVT Replace**

C303386

MQJ-24
TMA-26
TMB-26

CVTF Replacement and TCM Update/
Check *

C303686

0.5

0.5

0.5

MQU-26

Torque Converter & CVTF replacement
and TCM Update/Check *

C303286

5

4.9

N/A

LAA-26

Transfer Clutch R&R and TCM Update/
Check*

C303486

5.7

5.7

N/A

MSP-26

0.2

MQJ; New CVT Assembly
TMA; Replace OE or NEW CVT with Reman CVT(Remanufactured TR690 units are now available for Legacy/
Outback & Ascent
TMB; Replace Reman CVT with Reman CVT(Remanufactured TR690 units are now available for Legacy/
Outback & Ascent
*Include current or New CID# in warranty claim.
**Use QMR submission Labor Operation when Replacing CVT ONLY

Flow Chart D:
Labor Description

Labor Operation #

Labor Time:

CVT Diagnosis

B303986

0.6

See Labor Operations per Flow Chart Used
Diagnosis and No Fault Found/QMR Submitted

C303386

Fail Code

MKO-00
0.2

IMPORTANT REMINDERS:

•

SOA strongly discourages the printing and/or local storage of service information as
previously released information and electronic publications may be updated at any time.

•

Always check for any open recalls or campaigns anytime a vehicle is in for servicing.

•

Always refer to STIS for the latest service information before performing any repairs.

Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 10 of 27

APPENDIX A (Section 1)
IMPORTANT: 2023MY Legacy & Outback 2.4L vehicles, refer to TSB 16-145-23R.
Function of “Gear Ratio Change Rate Error Judgement”
Description: When feeling shocks or vehicle body vibrations during acceleration, this function will
support the diagnostic process to determine whether a chain slip occurs in the CVT or not.
Precautions for road testing:
•

Use a USB cable to connect the DST-i or DST-010 to a PC. Wireless communication may lead
to a wrong determination

•

When driving on public roads, pay attention to the surrounding traffic conditions and drive
safely incompliance with the law.

•

To ensure accurate detection of abnormal gear ratio changes, please refrain from the following
actions during the test drive:
○ Sudden deceleration or acceleration
○ Driving on rough roads
○ Driving the vehicle with the four wheels not stably contacting the ground, such as driving
over bumps and/or putting the vehicle on lift before completing the detection process.

SSM Workflow
1. On the [Start] screen, select [Diagnosis].
2. On the [Select Vehicle] screen, enter the vehicle information and select [Confirm].
3. On the [Main Menu] screen, select [Each System].
4. On the [Select System] screen, select [Transmission].
5. On the [Select Function] screen, select [Work Support].
6. On the [Work Support] screen, select [Gear Ratio Change Rate Error Judgement].
7. Follow the instruction displayed on the screen and perform a road test.
8. Once the concern is replicated, end the testing and the results will automatically populate.
When the message “Gear Ratio Change Rate Error Judgment is Complete” is displayed, the
detection process has finished. Testing automatically ends after a time period approximately
50 minutes. If an additional measurement is desired, restart the Subaru Select Monitor after
saving the data.
Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 11 of 27

Road Test Pattern:
No.

Accelerator Opening
Degree

Vehicle Speed

1

30%

0  30mph

2

50%

0  30mph

3

100%

0  30mph

4

After driving at a constant
speed for 20s at the vehicle
speed shown on the right,
accelerate by stepping on
the accelerator opening
10% more.

30(constant speed) 
40mph
40(constant speed) 
50mph
50(constant speed) 
60mph

5
6

Number Of Times
Implemented

Note

Each 1 time

If the customer’s
suggestions are specific,
such as vehicle speed
and accel pedal opening,
implement that driving
pattern.

Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 12 of 27

APPENDIX A (Section 2)
Lockup Judder Type A Diagnosis Procedure.
CAUTION: Confirm WRK-21/22 Has Previously Been Performed.
After the test drive has been completed with replication of the symptom, refer to the judgement criteria
and example graph below to determine if the condition matches Lockup Judder Type A. If replication
has not been completed, refer to the replication steps below.

Replication Method
STEP 1: Warm up the CVT until CVTF temperature reaches 122-158 degrees F (50-70 degrees C).
STEP 2: Make a complete stop, then accelerate the vehicle with throttle opening of approx. 15%.
STEP 3: As soon as the lockup operation begins at around 13mph with a slight drop of engine speed,
open the throttle further to 25% quickly.
STEP 4: Repeat the Step 2 and 3, 10 (ten) times.
STEP 5: In case a when a judder sensation is felt, the vehicle is presenting <Lockup Judder Type A>.

Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 13 of 27

APPENDIX A (Section 2)
Lockup Judder Type B Diagnosis Procedure:
After the test drive has been completed with replication of the symptom, refer to the judgement criteria
and example graph below to determine if the condition matches Lockup Judder Type B. If replication
has not been completed, refer to the replication steps below.

Replication Method
STEP 1: Warm up the CVT until CVTF temperature reaches 68-122 degrees F (20-50 degrees C).
STEP 2: Make a complete stop, then accelerate the vehicle with constant throttle opening of 15-20%.
STEP 3: Repeat the Step 2, 10 (ten) times.
STEP 4: In a case when a judder sensation is felt, the vehicle is presenting <Lockup Judder Type B>.

Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 14 of 27

APPENDIX A (Section 3)
Forward Clutch Judder Diagnosis Procedure:

Examples Graph for Forward Clutch Judder:

Replication Method
STEP 1: Warm up the CVT until CVTF temperature reaches 104-140 degrees F (40-60 degrees C).
STEP 2: Using Eyesight Adaptive Cruise Control (without using gas pedal,) drive the vehicle at 5060mh for more than 7 (seven) miles.
STEP 3: Turn the Eyesight Adaptive Cruise Control off and keep constant speed of 40-60mph using
gas pedal.
STEP 4: Depress gas pedal to increase throttle opening by 3-4% per second up to 30%.
STEP 5: Repeat Step 3 and Step 4 10 (ten) times.
STEP 6: In a case when a judder sensation is felt, the vehicle is presenting < Forward Clutch
Judder>.
Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 15 of 27

APPENDIX A (Section 4)
A jerk or judder sensation felt from the powertrain during braking
with the air conditioning on.
IMPORTANT: 2023-24MY Legacy & Outback 2.4L, 2023-24MY Ascent, and 2023-24MY WRX
vehicles, refer to TSB 16-150-24

For vehicles within the Basic New Car Limited Warranty period or covered by an active Subaru
Added Security Classic or Gold plan, this repair may be submitted using the following claim
information:
Labor Description

Labor Operation #

Labor Time:

Fail Code

TRANSMISSION CONTROL MODULE
REPROGRAMMING

B860-686

0.5

MJZ-48

TRANSMISSION CONTROL MODULE R&R
INCLUDING RELEARN

B860-786

0.8
MJT-43

TCM UPDATE AFTER REPLACEMENT

C860-118

0.3

Continued...
Bulletin Number: 16-151-24R; Revised: 06/04/26

Page 16 of 27

APPENDIX A (Section 5)
Noise and/or Judder While Turning Symptom Diagnosis Procedure:
NOTE: The noise/vibration typically occurs under cold conditions.
STEP 1: With the SSM connected confirm the CVT temperature is below 176 degrees F (80C) before
driving to collect data. If 176F (80C) or above, let the CVT cool before evaluating it.
STEP 2: Confirm if the noise/vibration appears by driving the vehicle under the conditions below.
Pay full attention when performing a road test. Conducting the road test in closed area and with an
additional person is recommended.
Items

Conditions

CVT oil pan temperature

Up to 176Deg F*

Accelerator opening angle

10 to 30%

Steering angle

Full Steer

Vehicles speed

Under 20mph

NOTE: *The noise/vibration may not occur when the CVTF temperature is higher than 176 degrees
F (80 C).
Countermeasure Service Procedures:
Lockup Judder Type A & B: Torque Convertor (p.n. 31100AB460) replacement, CVT Fluid (p.n.
31333AA160) replacement, and TCM software reprogramming (newest software available).
Forward Clutch Judder: CVT Fluid (p.n. 31333AA160) replacement and TCM software
reprogramming (newest software available).
Noise and/or Judder While Turning Symptom: TCM software reprogramming (newest software
available). Replacement of the referenced parts below. See the tables below for applicability.
LEGACY XT & OUTBACK XT

ASCENT & OUTBACK WILDERNESS

Part Description

Part Number

Qty

Part Description

Part Number

Qty

CLUTCH ASSY-TRF

33119AA740

1

CLUTCH ASSY-TRF

33119AA720

1

THRUST BEARING

806536020

806536020

806535030

806535030

806535040

806535040