Knocking Noise From Vacuum Pump At Idle (T-SB-0115-22 REV2)

WARNING: This page is about the Highlander Hybrid LE, 2.5L Eng VIN A, which is a different variant/trim than selected.

Publication date: 2024-08-01
Reference number: T-SB-0115-22 REV2
Supersedes refnos: T-SB-0115-22, T-SB-0115-22 REV1

KNOCKING NOISE FROM VACUUM PUMP AT IDLE

TECHNICAL SERVICE BULLETIN

Reference Number(s): T-SB-0115-22 Rev2, Date of Issue: August 01, 2024

TOYOTA:	2019 - 2022 Avalon; 2018 - 2023 Camry; 2017 - 2022 Highlander; 2017 - 2020 Sienna; 2016 - 2023 Tacoma
SERVICE CATEGORY:	Engine/Hybrid System
SECTION:	Engine Mechanical
MARKET:	USA and Mexico
COPYRIGHT:	© 2018 Lexus, a division of Toyota Motor Sales, USA License Agreement TMS1002

Superceded Bulletin(s): T-SB-0115-22 Rev1, Date of Issue: March 06, 2023, T-SB-0115-22, Date of Issue: December 22, 2022

APPLICABILITY

YEAR(S)	MODEL(S)	ADDITIONAL INFORMATION
2019 - 2022	Avalon
2018 - 2023	Camry
2017 - 2022	Highlander
2017 - 2020	Sienna
2016 - 2023	Tacoma

REVISION NOTICE

August 01, 2024 Rev2:

Applicability has been updated to include 2016 - 2023 model year Tacoma vehicles.
The Warranty Information, Parts Information, Required Tools & Equipment, and Repair Procedure sections have been updated.
The Table of Contents section has been removed.

March 06, 2023 Rev1:

Applicability has been updated to exclude 2016 - 2023 model year Tacoma vehicles.

Any previous printed versions of this bulletin should be discarded.

SUPERSESSION NOTICE

The information contained in this bulletin supersedes Service Bulletin No. T-SB-0316-17.

Applicability has been updated to include 2019 - 2022 model year Avalon, 2020 - 2023 Camry, 2020 - 2022 Highlander, and 2020 Sienna vehicles.
The market indicator has been updated to include the Mexico market.
The Warranty Information and Repair Procedure sections have been updated.

Service Bulletin No. T-SB-0316-17 is obsolete and any printed versions should be discarded.

INTRODUCTION

Some 2019 - 2022 model year Avalon, 2018 - 2023 model year Camry, 2017 - 2022 model year Highlander, 2017 - 2020 model year Sienna, and 2016 - 2023 model year Tacoma vehicles equipped with a 2GR-FKS engine may exhibit a knocking noise from the vacuum pump at idle. Follow the Repair Procedure in this bulletin to address this condition.

WARRANTY INFORMATION

FOR USA MARKET

WARRANTY INFORMATION

OP CODE

MODEL

MODEL YEAR

DESCRIPTION

TIME

OFP

BR1702

Avalon

2019 - 2022

R & R Vacuum Pump

1.8

29300-#####⁽¹⁾

Camry

2018 - 2023

1.8

Highlander

2017 - 2019

2.4

2020 - 2022

1.5

Sienna

2017 - 2020

1.7

Tacoma

2016 - 2023

1.8

⁽¹⁾	Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired by searching for the parts in the Electronic Parts Catalog using the VIN filter.

APPLICABLE WARRANTY

This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months or 36,000 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.

FOR MEXICO MARKET

WARRANTY INFORMATION

OP CODE

MODEL

MODEL YEAR

DESCRIPTION

TIME

OFP

BR1702

Avalon

2019 - 2022

R & R Vacuum Pump

1.8

29300-#####⁽¹⁾

Camry

2018 - 2023

1.8

Highlander

2017 - 2019

2.4

2020 - 2022

1.5

Sienna

2017 - 2020

1.7

Tacoma

2016 - 2023

1.8

⁽¹⁾	Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired by searching for the parts in the Electronic Parts Catalog using the VIN filter.

APPLICABLE WARRANTY

This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months or 60,000 kilometers, 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		MODEL	PART NAME	QTY
PREVIOUS	NEW	MODEL	PART NAME	QTY
29300-0P010 29300-0P011	29300-31040	Avalon, Camry, Highlander, Sienna	Pump Assy, Vacuum	1
29300-0P020 29300-0P021	29300-31060	Tacoma	Pump Assy, Vacuum	1

REQUIRED TOOLS & EQUIPMENT

REQUIRED EQUIPMENT

SUPPLIER

PART NUMBER

QTY

Techstream ADVI⁽¹⁾

ADE

TSADVUNIT

Techstream 2.0

TS2UNIT

Techstream Lite

TSLITEPDLR01

Techstream Lite (Green Cable)

TSLP2DLR01

⁽¹⁾	Essential SST.

NOTE:

Only ONE of the Techstream units listed above is required.
GTS+ software version 2024.02.004.02 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at 1-800-368-6787 (USA) or 01-55-50103041 (Mexico), or by visiting TIS - Diagnostics - Tools & Equipment - Techstream Order Portal .
Use Techstream or an approved J2534 interface to perform flash reprogramming updates. Visit techinfo.toyota.com for more information regarding J2534 reprogramming.

PARTS INFORMATION

SPECIAL SERVICE TOOLS (SST)

PART NUMBER

QTY

Picoscope Automotive Pressure Transducer Kit (Optional)⁽¹⁾

PIOKP355

⁽¹⁾	Essential SST.

NOTE: Additional SSTs may be ordered by calling 1-800-933-8335 (USA) or 01-800-504-5330 (Mexico).

REPAIR PROCEDURE

Is the vehicle a 2016 - 2023 model year Tacoma vehicle?
- YES - Continue to step 2.
- NO - Go to step 3.
Is the vehicle equipped with crawl control?
- YES - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
- NO - Continue to step 3.
Confirm a knocking noise can be heard from the vacuum pump at idle.
Refer to the audio link below for an example of the knocking noise condition:

Knocking Noise Example

Can a knocking noise be heard from the vacuum pump at idle?
- YES - Continue to step 4.
- NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
Using a stethoscope, check for the source of the noise with the vehicle's hood open.
Is the noise loudest at the bank 1 head cover near the high-pressure fuel pump?
- YES - Continue to step 5.
- NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
Check for ANY vacuum leaks.
1. Disconnect a vacuum hose between the vacuum pump and the brake booster.
2. Install a vacuum gauge with T-fitting in-line to measure the system vacuum.
  NOTE: An additional hose may be helpful to install the vacuum gauge in-line.
  
  Refer to TIS, applicable model and model year Repair Manual:
  - 2019 - 2022 Avalon:
    Brake - Brake System (Other) - Vacuum Pump (for 2GR-FKS) - On-vehicle Inspection
  - 2018 - 2023 Camry:
    Brake - Brake System (Other) - Vacuum Pump (for 2GR-FKS) - On-vehicle Inspection
  - 2017 - 2019 Highlander:
    Brake - Brake System (Other) - Vacuum Pump - On-vehicle Inspection
  - 2020 - 2022 Highlander:
    Brake - Brake System (Other) - Vacuum Pump - On-vehicle Inspection
  - 2017 - 2020 Sienna:
    Brake - Brake System (Other) - Vacuum Pump - On-vehicle Inspection
  - 2016 - 2023 Tacoma:
    Brake - Brake - Vacuum Pump - On-vehicle Inspection
3. Connect the vehicle to Techstream.
4. With the engine running and the coolant temperature between 14 - 140°F (-10 - 60°C), pinch or plug the booster side to confirm vacuum operation.
  Does the reading measure AT LEAST-86.7 kPa (-25.60 in. Hg)?
  - YES - Continue to substep E.
  - NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
5. Remove the pinch/plug and measure the vacuum of the entire system.
  Does the reading on the gauge measure AT LEAST-86.7 kPa (-25.60 in. Hg)?
  - YES - Continue to substep F.
  - NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
6. Press the brake pedal to the end of the stroke three times to completely consume vacuum.
7. Release the brake pedal and IMMEDIATELY monitor the vacuum level on the gauge.
8. Is the noise heard while the vacuum level is -80 through -95kPa (-23.6 through -28.05 in. Hg)?
  - YES - Continue to step 6.
  - NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
Remove the vacuum pump assembly.
Refer to TIS, applicable model and model year Repair Manual:
- 2019 - 2022 Avalon:
  Brake - Brake System (Other) - Vacuum Pump (for 2GR-FKS) - Removal
- 2018 - 2023 Camry:
  Brake - Brake System (Other) - Vacuum Pump (for 2GR-FKS) - Removal
- 2017 - 2019 Highlander:
  Brake - Brake System (Other) - Vacuum Pump - Removal
- 2020 - 2022 Highlander:
  Brake - Brake System (Other) - Vacuum Pump - Removal
- 2017 - 2020 Sienna:
  Brake - Brake System (Other) - Vacuum Pump - Removal
- 2016 - 2023 Tacoma:
  Brake - Brake - Vacuum Pump - Installation
Install the NEW vacuum pump assembly.
Refer to TIS, applicable model and model year Repair Manual:
- 2019 - 2022 Avalon:
  Brake - Brake System (Other) - Vacuum Pump (for 2GR-FKS) - Installation
- 2018 - 2023 Camry:
  Brake - Brake System (Other) - Vacuum Pump (for 2GR-FKS) - Installation
- 2017 - 2019 Highlander:
  Brake - Brake System (Other) - Vacuum Pump - Installation
- 2020 - 2022 Highlander:
  Brake - Brake System (Other) - Vacuum Pump - Installation
- 2017 - 2020 Sienna:
  Brake - Brake System (Other) - Vacuum Pump - Installation
- 2016 - 2023 Tacoma:
  Brake - Brake - Vacuum Pump - Installation
Confirm the knocking noise has been reduced.