T-SB-0077-16 Rev

T-SB-0077-16
Rev1
July 14, 2016
ECM Calibration: Shift Feeling Enhancements
Service
Category
Drivetrain
Section
Automatic Transmission/Transaxle
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2016 - 2017
Tacoma
VDS(s): AZ5CN, BZ5DN, CZ5AN, DZ5BN,
EZ5CN, GZ5AN, RZ5CN, SZ5AN
Engine(s): 2GR
Transmission(s): 6AT
REVISION NOTICE
November 15, 2016 Rev1:
The Applicability, Introduction, Parts Information, and Calibration Information sections have
been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2016 – 2017 model year Tacoma vehicles equipped with the 2GR engine and the AC60
6-speed automatic transmission may exhibit one or more of the following shift feeling concerns:

Delayed engagement Park to Drive or Reverse to Drive.

Harsh 1st – 2nd upshift.

Delayed upshift when using cruise control.

Busy shift-like hunting gear behavior when driving on highway speed/slight grade.

Engine flare during 3rd to 4th gear shift when in cold condition after several hours soak.
The Engine Control Module (ECM, SAE term: Powertrain Control Module/PCM) calibration has
been revised to address this condition.
© 2016 Toyota Motor Sales, USA
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ECM Calibration: Shift Feeling Enhancements
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
TC1601
Reprogram ECM (PCM) Engine
0.4
89661-04K52
26
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.
Parts Information
PART NUMBER
PREVIOUS
NEW
89661-04K52
89661-04K51
89661-04K50
89661-04K53
00451-00001-LBL
PART NAME
QTY
Computer, Engine Control
–
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 – Parts – Dealer Support Material Order.
Required Tools & Equipment
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.
© 2016 Toyota Motor Sales, USA
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Rev1
July 14, 2016
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ECM Calibration: Shift Feeling Enhancements
Required Tools & Equipment (Continued)
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream 2.0*
QTY
TS2UNIT
Techstream Lite
ADE
Techstream Lite (Green Cable)
TSLITEPDLR01
1
TSLP2DLR01
* Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
Software version 11.20.019 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.
Calibration Information
MODEL
Tacoma
ENGINE
CALIBRATION ID
ECM(CPU)
PREVIOUS
VDS
NEW
Main
8966304B0100
8966304B0000
8966304B0200
8966304B0300
Sub
896650401100
896650401000
896650401200
896650401300
2GR
AZ5CN
BZ5DN
CZ5AN
DZ5BN
EZ5CN
GZ5AN
RZ5CN
SZ5AN
Repair Procedure
1. Does the vehicle exhibit a delayed engagement Park to Drive or Reverse to Drive, harsh
1st – 2nd upshift, delayed upshift when using cruise control, busy shift on highway
speed/slight grade, or engine flare during 3rd to 4th gear shift when in cold condition after
several hours soak?

YES – Continue to step 2.

NO – This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
© 2016 Toyota Motor Sales, USA
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Rev1
July 14, 2016
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ECM Calibration: Shift Feeling Enhancements
Repair Procedure (Continued)
2. Check for the Authorized Modifications Label affixed to the vehicle in the location shown below.
Confirm if the ECM (PCM) calibration has been updated.
Is the calibration ID listed NOT the latest ECM (PCM) calibration?

YES – Continue to step 3.

NO – This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
Figure 1. Location of Authorized Modifications Label on 2016 – 2017 Tacoma
1
Replacement ECM (PCM) Part Number
(i.e,. 89661-04K53)
4
Date Completed
2
New Calibration ID(s) (i.e., 8966304B0300)
5
This SB Number
3
Dealer Code
© 2016 Toyota Motor Sales, USA
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ECM Calibration: Shift Feeling Enhancements
Repair Procedure (Continued)
3. 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 detail 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 the Service Bulletin T-SB-0134-16, “Techstream ECU Flash
Reprogramming Procedure”, and flash the ECM (PCM) with the NEW calibration file update.
4. Prepare and 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]
Dealer Code
Repair Date
Change Authority [This bulletin number]



B. Install 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.
5. Start the engine and warm it up to normal operating temperature and test drive to confirm
proper vehicle operation.
© 2016 Toyota Motor Sales, USA