NHTSA ID Number: 10060705
Manufacturer Communication Number: T-SB-0021-14
TSB/Document Date: 2016-03-31
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
®TOYOTA
T-58-0021-14
Technical Service Bulletin
April 10, 2014
Shudder on Deceleration After a Cold Soak
Service
Category
Drivetrain
Section
Automatic Transmission!Transaxle
Market
Toyota Supports ~
ASE C ertifica tion ~
USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2012-2014
Tacoma
Transmission (s): 4AT
Introduction
Some 2012 - 2014 model year Tacoma vehicles equipped with the A340 automatic transmission
may exhibit a shudder condition on deceleration at approximately 20 mph after the vehicle has cold
soaked . The Engine Control Module/ECM (SAE term : Powertrain Control Module/PCM) logic has
been modified to reduce the possibility of this condition occurring . Use the following procedure to
address this condition.
Warranty Information
OP CODE
EG1402
DESCRIPTION
TIME
OFP
T1
T2
0.4
89661 -04F80
89661-04F90
89661-04J10
89661-04J20
04
99
APPLICABLE WARRANTY
• This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect
for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
• Warranty application is limited to occurrence of the specified condition described in this
bulletin.
© 20 14 Toyota Motor Sales , USA
Page 1 of 5
April 10, 2014
T-SB-0021-14
Page 2 of 5
Shudder on Deceleration After a Cold Soak
Parts Information
PART NUMBER
MODEL YEAR
TRANS
DRIVETRAIN
PART NAME
2WD
2012
A340
2013-2014
PREVIOUS
NEW
89661-04F80
89661-04F81
4WD I PreRunner
89661-04F90
89661-04F91
2WD
89661-04J10
89661 -04J11
4WD I PreRunner
89661-04J20
89661-04J 21
QTY
-
>-----
Computer,
Engine Control
(ECM/PCM)
-
-
PART NUMBER
PART NAME
QTY
00451-00001-LBL
Authorized Modification Labels
1
NOTE
• The ECM (PCM) should NOT be replaced as part of the repair procedure.
• Authorized Modification Labels may be ordered in packages of 25 from the Materials
Distribution Center (MDC) through Dealer Daily- Dealer Support Materials Orders.
Calibration Information
CALIBRATION ID
MODEL
TRANS
MODEL YEAR
DRIVETRAIN
2WD
VOS
PREVIOUS
NEW
30471000
30471100
NX4CN
TX4CN
JX4CN
2012
Tacoma
4WD I PreRunner
30472000
30472100
TX4GN
JX4GN
PX4EN
UX4EN
2WD
30485000
30485100
NX4CN
TX4CN
JX4CN
30486100
TX4GN
JX4GN
PX4EN
UX4EN
A340
2013-2014
4WD I PreRunner
© 2014 Toyota Motor Sales, USA
30486000
T-SB-0021-14
Page 3 of 5
April 10, 2014
Shudder on Deceleration After a Cold Soak
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
QTY
TS2UNIT
Techstream 2.0*
TIS Techstream
PART NUMBER
ADE
TSPKG1
1
TSLITEDLR01
Techstream Lite
NOTE
• Only ONE of the Techstream units listed above is required.
• Software version 9.00.026 or later is required.
• Additional Techstream units may be ordered by calling Approved Dealer
Equipment (ADE) at 1-800-368-6787.
• The Diagnostic Tester is NOT recommended for flash reprogramming.
Please use Techstream or an approved J2534 interface to perform flash
reprogramming updates. Visit techinfo.toyota.com for more information
regarding J2534 reprogramming.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
GR8 Battery Diagnostic Station*
00002-MCGR8
1
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
* Essential SST.
Repair Procedure
1. Confirm the condition .
Is there a shudder/vibration felt on deceleration at approximately 20 mph after the vehicle has
cold soaked?
• YES -
Continue to step 2.
• NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. Is the shudder/vibration gone after the vehicle has reached operating temperature?
• YES • NO -
Continue to step 3.
This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
© 2014 Toyota Motor Sales , USA
T-SB-0021-14
April 10, 2014
Page 4 of 5
Shudder on Deceleration After a Cold Soak
Repair Procedure (Continued)
3. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in
Figure 1. Confirm if the ECM (PCM) calibration has been updated . If the calibration ID listed is
NOT the latest ECM (PCM) calibration - go to step 4.
Figure 1. Location of Authorized Modifications Label on 2012 - 2014 Tacoma
THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
THESE MODIFICATIONS HAVE BEEN APPROVED
AS APPROPRIATE BY EPA AND CARB
3 >-- •* DEALER CODE :
CHANGE AUTHORITY:
1
Replacement ECM (PCM) Part Number (i.e.,
89661-04F81)
2
New Calibration ID(s) (i .e., 30471100)
3
Dealer Code
DATE:
4
5
© 2014 Toyota Motor Sales, USA
I
D•I• Comploted
This SB Number
April 10, 2014
T-SB-0021-14
Page 5 of 5
Shudder on Deceleration After a Cold Soak
Repair Procedure (Continued)
4. Flash reprogram the ECM (PCM) .
NOTE
• The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain
battery voltage at 13.5 volts while flash reprogramming the vehicle.
• For details on how to use the GR8 Battery Diagnostic Station , refer to the
GR8 Instruction Manual located on the Technical Information System (TIS),
Diagnostics - Tools & Equipment - Battery Diagnostics.
Follow the procedures outlined in Service Bulletin No. T-SB-0012-13, "Techstream ECU Flash
Reprogramming Procedure," and flash the ECM (PCM) with the NEW calibration file update.
5. Disconnect the negative (-) battery terminal for 1 minute to clear the ECM learned values.
NOTE
There is NOT a Techstream utility to Reset Memory on a Tacoma equipped with an A340
transmission.
6. Test drive and confirm the repair.
7. Install the Authorized Modifications Label.
A Using a permanent marker, enter the following information on the label:
• ECM part number [Refer to the Parts Information section for the NEW PART NUMBER]
• Calibration ID(s) [Refer to the Calibration Information section for the NEW
CALIBRATION ID]
• Dealer Code
• Repair Date
• Change Authority [This bulletin number]
B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1.
The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.
© 2014 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0021-14
Replacement Service Bulletin Number:
MFR Communication Date: 2014-04-10
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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