T-SB-0017-08 Rev1
March 12, 2008
Engine “Pinging” or “Knocking” Noise
Service Category
Engine/Hybrid System
Applicability
| YEAR(S) | MODEL(S) | ADDITIONAL INFORMATION |
|---|---|---|
| 2001 – 2003 | Highlander | Body Type(s): SUV
Drive Type(s): 2WD, 4WD Engine(s): 1MZ Transmission(s): 4AT VDS(s): GF21A, HF21A |
TSB REVISION NOTICE
- June 18, 2008 Rev1:
- Applicability has been updated to include 2001 and 2002 model years.
- Parts Information has been updated with part numbers for 2001 and 2002 model years.
Any previous printed versions of this service bulletin should be discarded.
Introduction
Some 2001 – 2003 model year Highlander vehicles equipped with a 1MZ-FE engine may exhibit an intermittent “pinging” or “knocking” noise when accelerating slowly up a grade. The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been improved to address this condition.
Warranty Information
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 correction of a problem based upon a customer’s specific complaint.
Parts Information
| MODEL YEAR | DRIVETRAIN | PREVIOUS PART NUMBER | CURRENT PART NUMBER | PART NAME | QTY |
|---|---|---|---|---|---|
| 2001 | 2WD | 89661-48250 | 89661-48251 | Computer, Engine Control (ECM/PCM) | 1 |
| 4WD | 89661-48260 | 89661-48261 | 1 | ||
| 2002 | 2WD | 89661-48350 | 89661-48351 | 1 | |
| 4WD | 89661-48360 | 89661-48361 | 1 | ||
| 2003 | 2WD | 89661-48410 | 89661-48411 | 1 | |
| 4WD | 89661-48420 | 89661-48421 | 1 |
Inspection Procedure
- Drive the vehicle slowly up a slight grade using light throttle input.
- If engine “pinging” or “knocking” can be heard between 1400 – 1800 rpm, follow the procedure below to resolve the customer’s concern.
Repair Procedure
- Start the engine and warm it up to normal operating temperature before test driving.
- Test drive the vehicle to confirm normal operation. The repair is complete.
Approved J2534 Devices only provide reprogramming capabilities and do not support diagnostic scantool functions. For full diagnostic capabilities, please consider TIS Techstream or Techstream Lite
Toyota, Scion, and Lexus ECMs can be reprogrammed with the TIS Techstream, Techstream Lite, Diagnostic Tester, or can also be reprogrammed using a Toyota validated J2534 interface. Vehicle recalibration requires the use of the following:
- Toyota validated J2534 interface
- TIS Professional Level Subscription
- Toyota Calibration Update Wizard software (installed along with Techstream Software)
- Personal Computer running Microsoft Windows XP/2000 or later operating system
Toyota strongly recommends USING ONLY VALIDATED INTERFACE DEVICES that appear on this list.
Toyota works closely with J2534 interface manufacturers to ensure that their hardware works safely and efficiently with our products. Every device listed on this page has been thoroughly tested and validated on Toyota, Scion, and Lexus vehicles.
It is important to understand that only the specific devices, firmware, DLLs and APIs listed here have been tested by Toyota. We do not recommend use of any other J2534 device, firmware, DLL or API that is not listed here. Changes to J2534 hardware/software is outside of Toyota’s control; in some cases, changes made to device hardware/software can negatively impact reprogramming performance. Toyota makes every effort to continue to work with J2534 interface manufacturers to ensure continued product compatibility as our respective products evolve.
J2534 Approved Device Application Chart
| Supplier | Device Name | Version | CUW Version | Supported OS | ||
|---|---|---|---|---|---|---|
| Firmware* | DLL* | API* | ||||
| Bosch Diagnostics | Flasher LT-Import | 01.02.07 | 01.02.07 | 04.04 | 8.8 | B, C, D, E |
| Bosch Diagnostics | Flasher PRO | 01.09.18 | 01.09.18 | 04.04 | 8.8 | B, C, D, E |
| Bosch Diagnostics | Mastertech VCI | 13.0.75.27 | 2.0.75.27 | 04.04 | Testing in Progress | B, C, D, E |
| Dearborn Group | VSI-2534 | 1.112 | 2.05.22 | 04.04 | 8.10 | C, D |
| Drew Technologies | CarDAQ Plus No products found. | 01.09.18 | 01.09.18 | 04.04 | 8.8 | B, C, D, E |
| Drew Technologies | Mongoose MFC No products found. | 01.02.07 | 01.02.07 | 04.04 | 8.8 | B, C, D, E |
| Drew Technologies | Mongoose PRO No products found. | 1.1.12.0 | 1.1.12.0 | 04.04 | 8.16 | A, B, C, D |
| Snap-On | Pass Thru Pro II | 01.09.18 | 01.09.18 | 04.04 | 8.8 | B, C, D, E |
*Original validated firmware/DLL versions may be superceded by the device manufacturer. Contact the device manufacturer if you are unable to find the versions listed above.
Supported Operating Systems
| A | Windows 8 (32-bit; 64-bit) |
| B | Windows 7 (32-bit; 64-bit) |
| C | Windows VISTA Home Basic, Home Premium, Business, Ultimate |
| D | Windows XP Pro SP1 or later |
| E | Windows 2000 SP2 or later |
For more information about the J2534 devices listed above, click on the vendor names. To report compatibility problems with listed hardware/software, please contact the device manufacturer.
Obtaining Calibration Files
The Flash Reprogramming Calibration CD is no longer available.
ECU Calibrations are now available for download directly from TIS. A valid TIS Professional Level subscription is required to access Calibration files. These files are compatible with the above mentioned scantools and J2534 interfaces. The Calibration page, located on the Diagnostics tab in the TIS site, contains all the most current vehicle calibration files, applicable Service Bulletins, and instructions for use. Select the following link for step by step instructions to access this page.
Note: Calibration Update Software is now included in the Techstream Software Installer. A valid TIS Professional Level subscription is required to download and install Techstream Software.
Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API
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