T-SB-0044-14 Service Bulletin/Repair Instructions

@TOYOTA

T-SB -0044-14
Rev1
Technical Service Bulletin
July 7, 2014
Spark Knock Noise

Service

Category
Engin e/Hybrid System
Section
Engine Co ntrol
A
Market
Toyota Supports

ASE Cert1ficat1on ~
USA
Applicability

YEAR(S)
MODEL(S)
2012 - 2014
Tacoma
ADDITIONAL INFORMATION
REVISION NOTICE

Octo ber 14, 2014 Rev1:

• The Warranty Information and Parts Information sections have been updated .

Any previous printed versi ons of this bulletin should be disca rd ed .
Introduction

Some 2012 - 2014 model year Tacoma vehicles equipped with 1GR-FE engines may exhibit spark

knock (detonation) during light acceleration and/or uphill in hot weather (80 F or higher) . The Eng ine

Control module/ECM (SAE term : Powertrain Control Module/PCM) log ic has been modified to

reduce the possibi lity of this condition occurring . Follow th e Repair Procedure in this bulletin to

address this condition .

Warranty Information

OP CODE
EG 1404
DESCRIPTION
Reprogram ECM (PCM)
TIME
OFP
T1
T2
0.4
89661-04EOO

89661-04F40

89661-04F50

89661 - 04G60

89661 - 04G70

89661 - 04G80
06
99
APPLICABLE WARRANTY

• Th is repair is covered under the Toyota Federa l Emission Warranty. This warra nty 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 .
© 2014 Toyota Motor Sales, USA
Page 1 of 5
@ TOYOTA
T-SB-0044-14
July 7, 2014
Rev1
Page 2 of 5
Spark Knock Noise
Calibration Information

CALIBRATION ID

MOD EL
MODEL YEAR
DRIVETRAIN
ENGINE
4WD I 2WD

PreRunner

2012

Tacoma
2WD

1GR-FE
4WD

4WD I 2WD

PreRunner
2013 - 2014
2WD
TRANSMISSION
SAT

6MT

SAT

6MT
4WD
PREVIOUS
NEW
304SSOOO
304SS 100
30467000
30467100
30468000
30468100
30480000
30480100
30481000
30481 100
30482000
30482100
Parts Information

MODEL YEAR
DRIVETRAIN
ENGINE
PART NUMBER
TRAN SMISSION
PREVIOUS
NEW
SAT
89661 -04EOO
89661-04E01
89661 -04F40
89661 -04F41
PART NAME
QTY
4WD

2WD

PreRunner
2012
,___
2WD

4WD

4WD

2013 - 2014
2WD

PreRunner

2WD

4WD
-
6MT

1GR-FE

SAT
,___

~
8966 1-04FSO
89661 -04FS1
89661-04G60
89661-04G61
89661-04G70
89661-04G7 1
8966 1-04G80
89661-04G 81
Computer,

Engine Control

(ECM/PCM)
-
,___

6MT
-
------
PART NUMBER
PART NAME
QTY
004S1-00001 -LB L
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.
© 2014 Toyota Motor Sales, USA
@TOYOTA
Rev1
T-SB-0044-14
Page 3 of 5
July 7, 2014
Spark Knock Noise
Required Tools & Equipment

REQUIRED EQUIPMENT
SUPPLIER
Techstream 2.0·

Techstream Lite
PART NUMBER
QTY
TS2U NIT

ADE
1
TSLIT EPDLR01
NOTE

• Only ONE of the Techstream units listed above is requi red.

• Software version 9.20.022 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 o r 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 SS Ts may be ordered by calling 1-800-933-8335.

• Essential SST.
© 201 4 Toyota Motor Sales, USA
@TOYOTA
T-SB-0044-14
Rev1
Page 4 of 5
July 7, 2014
Spark Knock Noise
Repair Procedure
1. Confirm the condition .

Does the condition duplicate after driving under light acceleration or uphill with the engine

warmed up to operating temperature?

• YES • NO -
Continue to step 2.

This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. 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 3. If the calibration ID is the latest, go

to step 5.

Figure 1. Location of Authorized Modifications La bel on 2012 - 2014 Tacoma
THESE MODIFICATIONS HAVE BEEN APPROVED

AS APPROPRIATE BY EPAAND CARB

J}---1...._ DEALER COD E:

D ATE:
4'1111-~4
~C~H~A~N~G~E~A~U~T~H~O~R~ITY~

: ~~~~~~============j-~---{5
1
Replacement ECM (PCM) Part Number

(i.e., 89661-04E01)
2
New Calibration ID(s) (i.e., 30455100)
3
Dealer Code
4

5
© 2014 Toyota Motor Sales. USA
I
Date Completed

This SB Number
@ TOYOTA
T-SB-0044-14
Rev1
July 7, 2014
Page 5 of 5
Spark Knock Noise
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 reprog ramming the vehicle.

•
For details on how to use the GR8 Battery Diagnostic Station, refer to the

GR8 Instruct ion Manual located on the Technical Information System (TIS),

Diagnostics - Tools & Equipment - Battery Diagnostics.
Follow the procedures outlined in Service Bulletin No. T-SB-00 12-13, "Techstream ECU Flash

Reprogramming Procedure," and flash the ECM (PCM) with the NEW calibration file update.

4. 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 Au thorized Modifications Label to the vehicle at the location shown in Figure 1.

The Authorized Modifications Label is available through the MDC, PIN 00451-00001-LBL.

5. Test drive to confirm the repai r.
© 201 4 Toyota Motor Sales, USA

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