NHTSA ID Number: 10177215
Manufacturer Communication Number: NTB20-035a
TSB/Document Date: 2020-07-10
Summary
2018-2019 SENTRA; CVT JUDDER This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
Classification:
Reference:
AT20-001a
Date:
NTB20-035a
June 25, 2020
2018-2019 SENTRA; CVT JUDDER
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.
2018-2019 Sentra (B17)
APPLIED VEHICLES:
MRA8DE (non-turbo engine)
APPLIED ENGINE:
APPLIED TRANSMISSION: CVT (RE0F11A)
IF YOU CONFIRM
The customer reports a transmission judder (shake, shudder, single or multiple bumps or
vibration), hesitation on acceleration, lack of power or RPM flare.
ACTION
Refer to the Repair Overview on pages 2 and 3.
IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you
will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully complete this repair.
Nissan
Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are
properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.
1/147
Repair Overview
The customer reports a transmission judder (shake,
shudder, single or multiple bumps or vibration), hesitation
on acceleration, lack of power or RPM flare
No
Yes
Are one or more of the following DTC(s) stored?
P0746, P0846, P0868, P0965, P17F0, P17F1, P17F2,
P17F3, P17F4, P2857, P2858, P2859, P285A
No
Yes
Confirm the current
TCM part number.
Is reprogramming
available?
Continue to
the next page.
No
Yes
Reprogram the TCM
following NTB20-037.
This bulletin does not
apply.
Refer to ASIST for further
diagnostic information.
2/147
NTB20-035a
Repair Overview (continued)
Continued from the previous page.
Are one or more of the following DTC(s) stored?
P17F2, P17F4, P2857, P2858, P2859, P285A
Yes
No
Is any abnormal CVT noise present?
If so, does the noise occur in Park or
Neutral, but stops when shifting to Drive
or Reverse with the brakes applied?
Yes
No
Inspect the CVT pan for excessive debris.
Reference Figures 18-22 on pages 14-15.
Is excessive debris present?
Yes
Replace the CVT.
Refer to CVT
Assembly
Replacement
Approval Procedures
on page 147.
No
Yes
Is P17F0 stored?
Inspect input shaft
bearing condition starting
on page 43. Is an
abnormality present?
Yes
No
Remove control valve to allow for CVT
belt inspection.
Go to Control Valve (Valve Body)
Removal on page 12.
Is there evidence of CVT belt slippage?
No
Yes
No
Perform Pulse Rotor Inspection
on page 30.
Replace the belt & pulley,
control valve
and oil pump
(starting on page 32).
Yes
Is the pulse rotor loose?
No
Replace only the
control valve (page 32).
Print out the DTCs and
attach to the repair order.
3/147
NTB20-035a
Table of Contents
Required Tools / Material…………………………………………………….……
page 6
Essential Special Service Tools……………………………………...……….…..
page 6
Weights………………………………………………………………………………
page 9
Precautions when Disassembling a CVT Assembly……………………………
page 10
Inspection for Abnormal Noise……………………………………………………
page 11
Control Valve Removal…………………………………………………………….
page 12
CVT Belt Visual Inspection………………………………………………………..
page 18
Pulse Rotor Inspection…………………………………………………………….
page 30
No Belt Damage/Pulse Rotor Not Loose – Replace Control Valve…………..
page 32
Belt Damaged Or Pulse Rotor Loose……………………………………………
page 33
Remove CVT from Vehicle and Disassemble External Parts………………...
page 33
Remove the Fluid Filter……………………………………………….…………..
page 35
Remove the Oil Pan and Torque Converter Housing….………………………
page 37
Remove the Oil Seals from the Torque Converter Housing…………………..
page 38
Remove the CVT Internal Components…………………………………………
page 39
Remove the Sub-assembly……………………………………………………….
page 50
Clean the CVT Surfaces……...…………………….........................................
page 56
Clean Oil Passages in the CVT Case and Oil Pump Cover…..……..……….
page 57
Measuring the CVT Sub-assembly Case Depth……………………………….
page 63
New Snap Ring Selection and Installation to the New Sub-assembly…..….
page 66
Install Sub-assembly to CVT Case………………………………………………
page 72
Install the Oil Pump and the Manual Shaft………………………………….….
page 77
Install Powertrain Parts………………………….……………..…………………
page 80
Install the Torque Converter Housing……………………………………………
page 88
Install the Control Valve and the Oil Pan…..………………………...………...
page 91
Seal the Sub-assembly Cover……………..……………………………………..
page 94
4/147
NTB20-035a
Table of Contents (continued)
Install and Adjust the Transmission Range Switch…………………………….
page 99
Install Exterior CVT Parts.…………………………………….………………….
page 100
Install the CVT Assembly…………………………………………………………
page 105
Additional Service When Replacing Control Valve or Transaxle Assembly
page 106
TCM Reprogramming.……………………….………………………………….…
page 107
TCM Recovery……………………………………………………………………..
page 126
Control Valve Replacement……………………………………………………….
page 127
Erase Learning Value………………………………………………………………
page 132
Conform CVTF Deteriortn………………………………………………………….
page 134
Auxiliary Gearbox Clutchpoint Learning………………………………………….
page 137
PARTS INFORMATION……………………………………………………………
page 140
CLAIMS INFORMATION…………………………………………………………..
page 142
KIT PARTS REFERENCE TABLE.………………………………………….…..
page 144
CVT Assembly Replacement Approval Procedures…………………………….
page 147
AMENDMENT HISTORY…………………………………..………………………
page 147
5/147
NTB20-035a
REQUIRED TOOLS / MATERIALS
Petroleum jelly or equivalent
Extendable magnet
Large clean surface / 1 to 2 work tables
Brake cleaner
Rubbing alcohol
Plastic scraper
Mallet
Sandpaper
Essential Special Service Tools
Additional Essential Tools are available from Tech•Mate online: www.nissantechmate.com
or by phone: 1-800-662-2001.
J-52278
CVT2 Oil Pump
Seal Installer
J-50255
CVT Service Tool Kit
J-50272
Digital Depth
Gauge
J-51923
J-Hook Case
Separator
J-25721-A
Slide Hammer Set
J-50271
Gauge Block
J-8092 or J-52280
Driver Handle
Figure 1
Figure 2
6/147
J-52281
CVT Case Differential
Seal Installer
J-52272 Assembly Guide
Pins, Pulley Bracket
NTB20-035a
Essential Special Service Tools (continued)
Tech Cam J-51951
Figure 3
J-52306-1 and J-52306-2
Transmission Range Switch
Alignment Bracket and Pin
J-52273 Clutch
Engagement Tool
Figure 4
Figure 5
J-42909 Evap
Pressure Test Kit
Figure 6
7/147
NTB20-035a
Essential Special Service Tools (continued)
Split Ring Seal Installer Kit J-52595
J-52595-4
Split Ring Seal Cover
J-52595-3
Seal Driver
Figure 7
Figure 8
J-52595-1
First Groove Seal Tool (Top)
J-52595-1
First Groove Seal Tool (Bottom)
Figure 10
Figure 9
J-52595-2
Second Groove Seal Tool (Bottom)
J-52595-2
Second Groove Seal Tool (Top)
Figure 11
Figure 12
8/147
NTB20-035a
Essential Special Service Tools (continued)
J-52728
Pulse Rotor Lock
Figure 13
J-52729-2 Wheel
Lug Torque Adapter
Figure 14
A.
Weights
CVT assembly: 150 lbs. approximately
CVT sub-assembly: 40 lbs. approximately
9/147
NTB20-035a
SERVICE PROCEDURE
IMPORTANT: Repairs performed for this bulletin require CONSULT-III plus (C-III plus)
Diagnostic result reporting function-Setting be turned ON and Diagnosis (All
Systems) be performed. If not done, it may result in a repair being non-warrantable.
Precautions when Disassembling a CVT Assembly
IMPORTANT:
Transmissions are vulnerable to particle contamination (dust, metal, lint, etc.).
When disassembling a CVT, make sure your work environment (shop, workbench, etc.),
transmission area (sub-frame, oil pan, harness connector, etc.), and your hands are free of
any contamination.
It is essential that any foreign contamination be kept out of the CVT internals. Disassembly
and re-assembly shall be carried out under the following conditions:
To prevent possible drivability concerns, cover all air breather and
drive shaft holes to prevent water intrusion.
Wash and clean the exterior of the CVT assembly prior to disassembling.
Work in a covered indoor room to prevent contamination of the CVT.
Work on a clean stainless drain table.
Avoid debris from dropping into the converter housing, side cover or CVT case.
Remove any sealant remaining on bolts or mating surfaces of the converter housing,
side cover and/or the CVT case using a scraper, and then clean with lint-free paper
cloths.
Do not use cotton gloves or woven cloths. Latex or rubber gloves are recommended.
Use only lint-free paper cloths.
Apply rust penetrant to locator / dowel pins on the torque converter housing and side
cover of CVT and allow to soak as needed.
Only disassemble those parts which are mentioned in this bulletin.
Make sure all parts are clean prior to assembling / installing.
Brake cleaner is acceptable to remove remaining CVT fluid and residual sealer.
Unpack service parts just before installation.
Use only specified sealant material.
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TSB/Document ID: NTB20-035a
Replacement Service Bulletin Number:
MFR Communication Date: 2020-06-25
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN:AUTOMATIC TRANSMISSION
MFR Component System:
MFR Component Subsystem:
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