2003 Es 300, GS 430, GX 470, LS 430, Lx 470 And SC 430 Throttle Body (L-CP-3LF)
Publication date: 2003-07-01Reference number: L-CP-3LF
2003 ES 300, GS 430, GX 470, LS 430, LX 470 AND SC 430 THROTTLE BODY
SERVICE CAMPAIGN BULLETIN
| LEXUS: | 2003 ES 300, GS 430, GX 470, LS 430, LX 470 and SC 430 |
| SERVICE CATEGORY: | Special Service Campaign |
| SECTION: | General |
| COPYRIGHT: | © 2018 Lexus, a division of Toyota Motor Sales, USA License Agreement TMS1002 |
PREPARING FOR THE SSC
Overview
Lexus is initiating a Special Service Campaign (SSC). The 3LF SSC is for 2003 ES 300s, GS 430s, GX 470s, LS 430s, LX 470s and SC 430s. On certain early 2003 ES, GS, GX, LS, LX or SC vehicles an electrical contact in the throttle body motor may malfunction. This handbook provides all the details necessary to plan and implement this SSC at your dealership. Key points on the SSC are summarized below.
3LF Condition
On certain 2003 model year vehicles as listed above, an electrical contact in the throttle body motor may malfunction. If this malfunction occurs, the malfunction indicator light (MIL) will illuminate on the dash and the engine ECM will store a trouble code, and place the vehicle in a "limp home" mode.
3LF Repair
The 3LF SSC involves inspecting, and if necessary, replacing the throttle body assembly.
Customer Notification
Notification letters will be sent to the owners of affected vehicles in August 2003. This letter will advise owners of the need to have the throttle body assembly inspected and, if necessary, replaced.
SSC and Customer Satisfaction
This Special Service Campaign provides us with an opportunity to demonstrate the Lexus commitment to total customer satisfaction. By implementing the 3LF SSC in an organized and efficient manner, we can nurture our on-going relationships with these customers and strengthen these associations. Throughout the campaign, we need to let our customers know that we are genuinely interested in resolving the matter in a timely fashion with as little inconvenience to them as possible.
Identifying Affected Vehicles
The 3LF Special Service Campaign only applies to specific 2003 ES 300s, GX 470s, LS 430s, LX 470s and SC 430s within the VIN ranges below. Not all vehicles in the VIN ranges are involved in this SSC. No other vehicles before or after this range are to be repaired under the provisions of this SSC.
| Year | Model | VIN | Production Period | |
|---|---|---|---|---|
| VDS | Range | |||
| 2003 | ES 300 | BF30G | 0137859 - 0145318 6006913 - 6010948 |
March 27, 2003 through May 14, 2003 |
| GS 430 | BL69S | 0013385 - 0013686 | ||
| GX 470 | BT20X | 0014695 - 0017252 | ||
| LS 430 | BN30F | 0115229 - 0118002 | ||
| LX 470 | HT00W | 3532785 - 3533678 | ||
| SC 430 | FN48Y | 0044882 - 0046373 | ||
The enclosed SSC summary report lists vehicles sold by your dealership. From this list, please determine the actual number of customers who should come back to your dealership for this SSC.
Manpower and Facility Requirements
Your dealership must plan carefully to accommodate the additional service volume generated as a result of this SSC.
In reviewing your dealership's manpower and facility requirements for this Special Service Campaign, there are several items you need to consider.
- Do you need to develop ways to increase your service capacity?
- Do you need to hire additional support staff for pick-up/ delivery, car washes and fuel tank fill-ups?
- Enterprise Rent-A-Car arrangements are in effect for SSC 3LF. See page 8 for further details.
You will need to hold a meeting with all dealership associates to discuss:
- Importance of Lexus customer care for each SSC customer.
- Various procedures such as phone inquiries, pick up and delivery, loaners, etc.
- Campaign specifics including your dealership's assigned quantity, completion objectives, and technical details.
We recommend that one person at your dealership be designated as the campaign coordinator.
Your District Operations Manager will meet with you to answer your questions and monitor the progress of this SSC.
Tools and Equipment
Your dealership will need standard hand tools and the Lexus scan tool for this repair procedure.
Technical Training
The back of this handbook contains the repair procedures for this SSC. We suggest that all service department staff who will be directly involved in completing the repair or supporting the SSC should review the repair procedures to prepare for this SSC. Please note that the repair procedures are model specific.
Parts
| Vehicle Model | Part Number | Part Description | Qty. |
|---|---|---|---|
| ES 300 | 04003-20320 | Throttle Body Kit | 1 |
| GS 430 LS 430 SC 430 |
04003-18350 | Throttle Body Kit | 1 |
| GX 470 LX 470 |
04003-18550 | Throttle Body Kit | 1 |
These parts have not been added to your Dealer Stocking Guide (D.S.G.). You are encouraged to order only those parts needed to repair vehicles with service appointments. Individual dealer tracking will be done and irregularities in quantity ordering will be passed on to Lexus Area Offices for follow-up and correction. There will be sufficient inventory to accommodate this SSC.
TDN and DMS Systems
The labor operation codes have been transmitted to your dealership (see page 12 for opcodes). Remember that each dealership using TDN must request and apply them to the dealer system. If your dealership has not received the operation codes, call the TDN hotline at (800-421-8154 ). DMS dealer files are automatically updated and no further action should be required.
Planning Your Communication Strategy
It is important that you develop a strategy to communicate effectively. The following are some general statements that can be used when explaining the SSC.
Q1: What is the condition?
A1: On certain 2003 model year vehicles (ES 300, GS 430, GX 470, LS 430, LX 470 and SC 430) the engine ECM will detect malfunctions in the throttle body motor. If this malfunction occurs, the malfunction indicator light (MIL) will illuminate on the dash and the engine ECM will store a trouble code, and place the vehicle in a "limp home" mode.
Q2: What is the cause of this condition?
A2: An electrical contact inside the throttle body motor may be inadequate and cause a malfunction.
Q3: Are there any warnings that this condition has occurred?
A3: Yes, the MIL will illuminate, the ECM will store a diagnostic trouble code.
Q4: Which and how many vehicles are involved?
A4: The following 2003 model year vehicles are involved in the U.S. market.
| Vehicle | Approximate Quantity |
|---|---|
| ES 300 | 4,200 |
| GS 430 | 230 |
| GX 470 | 2,300 |
| LS 430 | 1,700 |
| LX 470 | 600 |
| SC 430 | 1,000 |
Q5: What is the production period of the affected vehicles?
A5: The affected vehicles were produced between March 2003 and May 2003.
Q6: Are there any other Toyota or Lexus vehicles involved?
A6: Yes, this condition also affects certain 2003 model year Toyota 4Runner V8, Camry 4 Cylinder (Japan built), Celica GTS, Prius and Land Cruiser.
Q7: How many incidents of this condition have been reported?
A7: There have been 9 reported cases of this condition in the affected vehicles.
Q8: Have there been any accidents reported?
A8: There have been no reported cases of accidents related to this condition.
Q9: How long will the repair take?
A9: The replacement will take up to approximately two hours depending on the vehicle. However, depending upon the dealer's work schedule, it may be necessary to make the vehicle available for a longer period of time.
Q10: What is Lexus going to do?
A10: Owners of the involved vehicles will receive a Special Service Campaign notification by first class mail. Lexus dealers will inspect and if necessary, replace the throttle body at NO COST to the vehicle owner.
Q11: What should an owner do if they have this condition?
A11: Owners are requested to contact their local Lexus dealer for diagnosis and, if necessary, replacement of the throttle body assembly.
Calls to Your Customers
- Customers involved
in the SSC
- Although each affected vehicle owner will receive a notification letter, we would like your dealership to use the customer list provided in the SSC package to help manage your service volume. We strongly suggest that your dealership's service management and consulting staff review the list and proactively contact customers for prompt service.
- Also let them know how valuable a customer they are and that this Special Service Campaign is being undertaken by Lexus to keep their confidence in the Lexus brand.
- Customers not involved
in the SSC
- Assure any customers with vehicles outside of the involved VIN range that this repair is not needed.
Calls from Your Customers
It is important to institute a system to respond to customers calling for more information regarding the SSC. We recommend designating an individual to answer these inquiries to ensure that callers get accurate, consistent information.
Calls from the Media
We ask that you refer any calls from the media or government agencies directly to Lexus headquarters in Torrance, California. The contact at Lexus is:
Holly Ferris, Lexus Public Relations Manager
IMPLEMENTING THE 3LF SSC
Car Rental and Service Loaners
One of the ways we can demonstrate that Lexus cares is by honoring loaner car requests with the best loaner available for those customers unable or unwilling to wait for this repair.
{Preferred}
Lexus Customer Convenience System (LCCS)
Officially enrolled LCCS vehicles may be claimed at a rate of $44.00 per day. (Lexus vehicles only.)
{Preferred}
Lexus Dealer Fleet (Lexus vehicles only)
A rate of $44.00 per day may be claimed if using this option. Be sure to follow customer supplied insurance guidelines.
Enterprise Rent-A-Car
Recognizing that loaner car capacity may become an issue, Lexus is continuing special arrangements with Enterprise Rent-A-Car to supplement the demand. The specially negotiated price includes a $35.00 per day charge for premium cars and an $11.99 per day rate, plus applicable taxes, for full collision protection (C.D.W.). The total is $46.99, plus tax, in all 48 contiguous states except for New York where the rate structure is different due to state laws covering the sale of a Collision Damage Waiver.
An important feature to this preferred rental arrangement is that this rate entitles your customers to any available Enterprise vehicle including luxury vehicles. So please provide them with a selection of the best available vehicles. Also please employ the strategy (where practical) that SSC customers receive Lexus vehicles and Enterprise vehicles are reserved for regular service customers.
The motivating factor for any of these options is the customer's convenience and consideration. Again please provide the best available vehicle. If extraordinary customer requests are made, please contact your DOM. In addition, loaner car requests that exceed one day must carry proper DOM authorization.
Remote Area Service Plan
"Remote" is defined as those distances where a customer is 100 or more miles from the nearest Lexus dealership. Your DOM will work with you to develop and authorize an action plan.
Guidelines to be used in performing remote repairs are:
- If the customer is within 100 miles of the nearest Lexus dealership, the closest Lexus dealership will perform the repair provided that prior authorization for related expenses has been approved by the DOM.
- If the customer is more than 100 miles from the nearest Lexus dealership, Lexus area associates or, Lexus national associates may perform the repair. Dealerships may also make these repairs but only with the authorization of the Area Coordinator (most likely the F.T.S.).
- Each situation will be handled on a case-by-case basis.
- Lexus will only pay for authorized costs that have been approved by DOM or area offices.
- Alternatives include pick-up and redelivery of remotely located vehicles.
The Service Write-Up
Listed on the following page are some general guidelines to use when the customer arrives at your dealership for the SSC:
- Explain that the inspection and repair will take about two hours. Inform the customer that the special services (refueling, car wash) will require additional time at your dealership.
- Explain the type of repair involved.
- If the customer does not have an SSC notice:
- Check the VIN against the TIS or the national Service History File to see if the vehicle has been previously repaired under this Campaign.
- Check the left front door hinge post for an SSC completion label.
- If the vehicle falls outside of the above guidelines, explain that the vehicle does not require the Campaign repairs.
- If the vehicle is eligible, explain the SSC to the customer; describe the procedure and the amount of time needed for the repair.
- If the customer has an appointment, pull the work order; otherwise, create a work order reflecting the need to complete the SSC 3LF repair.
- Issue the work order to the technician and include job instructions for the SSC.
Preparing for the Delivery After SSC Completion
- Wash/clean the vehicle inside and out.
- Fill the gas tank with the specified unleaded fuel
- Notify customer of completion and arrange for re-delivery or return of rental vehicle.
Delivery of the Vehicle After the SSC Completion
The delivery of the vehicle is a very important part of ensuring a high level of customer satisfaction. Explain all SSC repairs to the customer and apologize for any inconveniences. Thank the customer for his or her time and their continuing patronage.
Follow-Up
Complete 100% after-service follow-up is critical to ensure complete customer satisfaction with the repairs performed and the service provided.
Work Order Closing/ Claim Submission
The following information explains the policies and procedures for preparation and submission of a warranty claim for reimbursement of a repair performed under the SSC 3LF.
| Repair | Claim Type | Model | Opcode | Labor Hours(1) | Sublet | ||
|---|---|---|---|---|---|---|---|
| Inspect Throttle Body LS 430 | SC | LS 430 | 3610FD | 0.3 | GA (fuel), TW (tow), RT (loaner vehicle), DE (pick-up and delivery or remote repair), or CW (car wash) as required and substantiated by invoices | ||
| Replace Throttle Body LS 430 | SC | LS 430 | 3610FQ | 1.7 | |||
| Inspect Throttle Body ES 300 | SC | ES 300 | 3610FB | 0.2 | |||
| Replace Throttle Body ES 300 | SC | ES 300 | 3610FN | 1.3 | |||
| Inspect Throttle Body SC 430 | SC | SC 430 | 3610FK | 0.3 | |||
| Replace Throttle Body SC 430 | SC | SC 430 | 3610FU | 1.6 | |||
| Inspect Throttle Body GX 470 | SC | GX 470 | 3610FH | 0.3 | |||
| Replace Throttle Body GX 470 | SC | GX 470 | 3610FS | 1.3 | |||
| Inspect Throttle Body GS 430 | SC | GS 430 | 3610FJ | 0.3 | |||
| Replace Throttle Body GS 430 | SC | GS 430 | 3610FT | 1.4 | |||
| Inspect Throttle Body LX 470 | SC | LX 470 | 3610FG | 0.3 | |||
| Replace Throttle Body LX 470 | SC | LX 470 | 3610Fr | 1.4 | |||
|
|||||||
Recap of Claim Submission and General Provisions of the SSC
- Lexus will pay for gas tank fill-up (actual cost)
- Lexus will pay for washing the vehicle (up to $20 per vehicle)
- Lexus will provide a loaner vehicle if required (DOM authorization required for more than one day)
- Lexus will pay for costs associated with remote repairs if required
- Lexus will pay for remote pick-up and delivery if required (DOM authorization only)
Claiming Reimbursement for Special Services
You must use sublet to claim any special services required in conjunction with the SSC repair.
- Issue "TW"
(Tow Vehicle)
- Applicable to every vehicle if required
- Claim actual receipt amount as a sublet
- You may utilize AAA or any agency providing Lexus type service
- Issue "RT"
(Rental)
- Applicable to every vehicle if required
- Special Service Campaign customers may also be given L.C.C.S. vehicles at the normal reimbursement rate of $44.00 per day
- Lexus has negotiated a special day rate of $46.99 plus tax per day with Enterprise Rent-A-Car as an option (includes C.D.W., Collision Damage Waiver insurance)
- The loaner vehicle reimbursement rate cap is one day per repair unless otherwise authorized by DOM
- Issue "GA"
(Gas Tank Fill-Up)
- Applicable to every vehicle
- Claim actual fill-up amount
- Issue "CW"
(Car Wash/Administrative Time)
- Applicable to every vehicle
- Claim $20.00 per vehicle
- Issue "DE"
(Pick-Up and Delivery/Remote Repairs
)
- Applicable only under special circumstances (e.g. more than 100 miles from the nearest Lexus dealership)
- Claim actual dealer cost
- F.T.S/A.O.M. authorization is required for this expense
- Issue "DE"
(Pick-Up and Delivery
/Remote Repairs)
- Applicable at dealer discretion
- Claim actual dealer cost
Claim Preparation Instructions
- Unique invoice number
- Description
- Sublet Type
- Dollar Amount
OWNER NOTIFICATION
2003 MODEL YEAR < MODEL >
SPECIAL SERVICE CAMPAIGN NOTICE 3LF FOR ELECTRONIC THROTTLE BODY
Dear Lexus Owner:
Thank you very much for your patronage of Lexus. We are dedicated to providing vehicles of outstanding quality and value. As part of our continuing efforts to provide superior customer satisfaction, Lexus is announcing a Special Service Campaign Program, which includes your vehicle.
What is the condition?
On certain 2003 Model Year < MODEL > vehicles, an electrical contact in the throttle body motor may malfunction. If this malfunction occurs, the malfunction indicator light (MIL) will illuminate on the dash, and the engine ECM will store a trouble code and place the vehicle into a "limp-home" mode.
What will Lexus do?
Lexus will inspect and, if necessary, replace the throttle body assembly with an improved one at NO COST to you.
What should you do?
Please contact any Lexus dealer and make an appointment to inspect and, if necessary, replace the throttle body assembly.
The actual replacement will take approximately two hours. However, depending upon the dealer's work schedule, it may be necessary to make your vehicle available for a longer period of time.
Please present this notice to the dealer at the time of your service appointment.
If you no longer own the vehicle, please indicate so on the enclosed postage-paid form, and if possible providing us with the name and address of the new owner.
What if you have any other questions?
Please contact any Lexus dealer or call the Lexus Customer Assistance Center at 1-800-255-3987.
What if you live in California and don't have this Special Service Campaign performed?
The State of California requires the completion of Special Service Campaigns on emission related parts prior to vehicle registration renewal. In addition, the State requires that every vehicle must pass an emission test (SMOG Check) every two years and before it is sold. Without the completion of the NO COST Special Service Campaign we are providing, your vehicle may be more likely to fail this test.
State of California regulations require Lexus to provide the Department of Motor Vehicles with a record of all vehicles that have not had this Special Service Campaign completed.
Please take advantage of this offer at your earliest convenience.
We have sent this notice in the interest of your continued satisfaction with our products, and we sincerely regret any inconvenience this condition may have caused you.
Sincerely,
LEXUS DIVISION
TOYOTA MOTOR SALES, U.S.A., INC.
TECHNICAL INSTRUCTIONS
II. IDENTIFICATION OF AFFECTED VEHICLES
A. AFFECTED VIN RANGE
| Model | Year | VIN Range | |
|---|---|---|---|
| VDS | Ranges | ||
| ES 300 | 2003 | BF30G | 0137859 - 0145318 6006913 - 6010948 |
III. PREPARATION
A. PARTS
For throttle body replacement
| Part No. | Parts Name | Q'ty/ Vehicle |
|---|---|---|
| 04003-20320 | Throttle Body Kit | 1 |
B. TOOLS
- Standard Hand Tools
- Lexus Scantool
IV. WORK PROCEDURE
A. THROTTLE BODY INSPECTION
- REMOVE THE FRONT UPPER SUSPENSION BRACE
- INSPECT THE THROTTLE BODY LOT NUMBER
- Using a mirror inspect the lot number of the throttle body near the throttle motor.
- Check the throttle body lot number.
- If the throttle body lot number is:THROTTLE BODY LOT NUMBERS
3D02 3D06 3D10 3D14 3D18 3D22 3D03 3D07 3D11 3D15 3D19 3D23 3D04 3D08 3D12 3D16 3D20 3D24 3D05 3D09 3D13 3D17 3D21 3D25 proceed to throttle body replacement SECTION B.
- If the throttle body lot number is not in the list above proceed to step 3.
- If the throttle body lot number is:
- REINSTALL FRONT UPPER SUSPENSION BRACE
- Remove the 4 nuts.
- Reinstall the 4 spacers.
- Reinstall the front upper suspension brace.
- Reinstall the 4 nuts.
Torque:
80 N.m (816 kgf.cm, 59 ft.lbf)
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
B. THROTTLE BODY REPLACEMENT
- RECORD AUDIO STATION PRESETS
- DISCONNECT THE NEGATIVE BATTERY CABLE
- REMOVE THE V-BANK COVER SUBASSEMBLY
- REMOVE THE AIR CLEANER CAP SUB-ASSEMBLY
- Disconnect the following:
- MAF sensor connector (a)
- VSV connector (b)
- No. 1 emissions tube (c)
- 4 vacuum hoses (d)
- Fuel vapor feed hose (e)
- Ventilation hose (f)
- Loosen the 2 air cleaner cap bolts (g).
- Loosen the air cleaner hose clamp bolt (h).
- Remove the air cleaner cap and hose.
- Remove the air cleaner filter element.
- Disconnect the following:
- REMOVE THROTTLE BODY ASSEMBLY
- INSTALL THE NEW THROTTLE BODY ASSEMBLY
- REINSTALL THE AIR CLEANER CAP SUB-ASSEMBLY
- Reinstall the air cleaner filter element.
- Reinstall the air cleaner cap and hose.
- Tighten the air cleaner hose clamp bolt (h).
- Tighten the 2 air cleaner cap bolts (g).
Torque:
5 N.m (51 kgf.cm, 44 in.lbf)
- Reconnect the following:
- Ventilation hose (f)
- Fuel vapor feed hose (e)
- 4 vacuum hoses (d)
- No. 1 emissions tube (c)
- VSV connector (b)
- MAF connector (a)
- RECONNECT THE NEGATIVE BATTERY CABLE
- CHECK FOR COOLANT LEAKS
- INSPECT THE FUNCTION OF THE THROTTLE BODY
- Connect the scantool to the DLC3 connector.
- Turn the ignition switch to the "ON" position.
- Press down on the accelerator pedal, and ensure that the throttle motor is operating properly and does not bind or make any friction noises.
- Inspect the TPS.
- Check that the MIL is "OFF".
- Using the throttle linkage fully open the throttle.
- Check that the "THROTTLE POS" on the CURRENT DATE screen shows the standard value.
Standard Value:
60% or greater
NOTE: If the Standard Value is out of specifications, refer to the appropriate repair manual.
- Start the engine and allow it to reach normal operating temperature.
- Turn the A/C switch to the "ON" position.
- Check idle speed.
- Turn the A/C to the "OFF" position.
- Check idle speed.NOTE: Refer to the appropriate repair manual for idle speed specifications.
- Check idle speed.
- Connect the scantool to the DLC3 connector.
- RESET AUDIO STATION PRESETS
- REINITIALIZE THE FOLLOWING COMPONENTS IF EQUIPPED:
- Compass
- Moon roof
- REINSTALL THE V-BANK COVER
- REINSTALL FRONT UPPER SUSPENSION BRACE
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
2003 MY GS 430, LS 430, SC 430 THROTTLE BODY REPLACEMENT
II. IDENTIFICATION OF AFFECTED VEHICLES
A. AFFECTED VIN RANGE
| Model | Year | VIN Range | |
|---|---|---|---|
| VDS | Ranges | ||
| GS 430 | 2003 | BL69S | 0013385 - 0013686 |
| LS 430 | 2003 | BN30F BN36F |
0115229 - 0118002 |
| SC 430 | 2003 | FN48Y | 0044882 - 0046373 |
PREPARATION
B. TOOLS
- Standard Hand Tools
- Lexus Scantool
III. WORK PROCEDURE
A. THROTTLE BODY INSPECTION
- REMOVE THE V-BANK COVER
- Remove the 2 nuts holding the V-Bank cover.
- Check the throttle body lot number.
- If the throttle body lot number is:THROTTLE BODY LOT NUMBERS
3D02 3D06 3D10 3D14 3D18 3D22 3D03 3D07 3D11 3D15 3D19 3D23 3D04 3D08 3D12 3D16 3D20 3D24 3D05 3D09 3D13 3D17 3D21 3D25 proceed to throttle body replacement SECTION B.
- If the throttle body lot number is not in the list above proceed to step 2.
- If the throttle body lot number is:
- Remove the 2 nuts holding the V-Bank cover.
- REINSTALL V-BANK COVER
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
B. THROTTLE BODY REPLACEMENT
- RECORD AUDIO STATION PRESETS
- DISCONNECT THE NEGATIVE BATTERY CABLE
- REMOVE THE NO. 1 AIR CLEANER INLET
- REMOVE THE INTAKE AIR CONNECTOR PIPE
- Disconnect the following from the air connector pipe:
- The air hose.
- PCV hose.
- Remove the bolt and hose clamp.
- Remove the air connector pipe.
- Disconnect the following from the air connector pipe:
- REMOVE THE THROTTLE BODY ASSEMBLY
- INSTALL THE NEW THROTTLE BODY ASSEMBLY
- REINSTALL THE INTAKE AIR CONNECTOR PIPE
- Reinstall the air connector pipe with the bolt and hose clamp.
Torque:
Hose Clamp:
4 N.m (40 kgf.cm, 35 in.lbf)
Bolt
5 N.m (50 kgf.cm, 44 in.lbf)
- Reconnect the following to the air connector pipe:
- The air hose.
- PCV hose.
- Reinstall the air connector pipe with the bolt and hose clamp.
- REINSTALL THE NO. 1 AIR CLEANER INLET
- RECONNECT THE NEGATIVE BATTERY CABLE
- CHECK FOR COOLANT LEAKS
- REINSTALL THE V-BANK COVER
Torque:
5 N.m (50 kgf.cm, 44 in.lbf)
- INSPECT THE FUNCTION OF THE THROTTLE BODY
- Connect the scantool to the DLC3 connector.
- Turn the ignition switch to the "ON" position.
- Press down on the accelerator pedal, and ensure that the throttle motor is operating properly and does not bind or make any friction noises.
- Inspect the TPS.
- Check that the MIL is "OFF".
- Using the throttle linkage fully open the throttle.
- Check that the "THROTTLE POS" on the CURRENT DATE screen shows the standard value.
Standard Value:
60% or greater
NOTE: If the Standard Value is out of specifications refer to the appropriate repair manual
- Start the engine and allow it to reach normal operating temperature.
- Turn the A/C switch to the "ON" position.
- Check idle speed.
- Turn the A/C to the "OFF" position.
- Check idle speed.NOTE: Refer to the appropriate repair manual for idle speed specifications.
- Check idle speed.
- Disconnect the scantool.
- Connect the scantool to the DLC3 connector.
- RESET AUDIO STATION PRESETS
- REINITIALIZE THE FOLLOWING COMPONENTS IF EQUIPPED:
- Compass
- Drivers seat and head restraint position.
- SSC COMPLETION LABEL INSTALLATION
2003 GX 470 THROTTLE BODY REPLACEMENT
II. IDENTIFICATION OF AFFECTED VEHICLES
A. AFFECTED VIN RANGE
| Model | Year | VIN Range | |
|---|---|---|---|
| VDS | Ranges | ||
| GX 470 | 2003 | BT20X | 0014695 - 0017252 |
III. PREPARATION
B. TOOLS
- Standard Hand Tools
- Lexus Scantool
IV. WORK PROCEDURE
A. THROTTLE BODY INSPECTION
- REMOVE THE V-BANK COVER
- Remove the 2 nuts holding the throttle body cover sub-assembly.
- Check the throttle body lot number.
- If the throttle body lot number is:THROTTLE BODY LOT NUMBERS
4E02 4E06 4E10 4E14 4E18 4E22 4E03 4E07 4E11 4E15 4E19 4E23 4E04 4E08 4E12 4E16 4E20 4E24 4E05 4E09 4E13 4E17 4E21 4E25 proceed to throttle body replacement SECTION B.
- If the throttle body lot number is not in the list above proceed to step 2.
- If the throttle body lot number is:
- Remove the 2 nuts holding the throttle body cover sub-assembly.
- REINSTALL THE V-BANK COVER
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
B. THROTTLE BODY REPLACEMENT
- RECORD AUDIO STATION PRESETS
- DISCONNECT THE NEGATIVE BATTERY CABLE
- REMOVE THE AIR CLEANER INLET HOSE ASSEMBLY
- Disconnect the following from the air cleaner inlet hose assembly:
- Power steering idle-up vacuum hose.
- Fuel pressure regulator vacuum hose.
- Ventilation hose.
- Remove the air cleaner hose assembly.
- Disconnect the following from the air cleaner inlet hose assembly:
- REMOVE THE THROTTLE BODY ASSEMBLY
- Disconnect the following coolant hoses:
- Water by-pass hose.
- Water by-pass hose No. 7.
- Disconnect the TPS connector.
- Remove the 2 nuts and 2 bolts from the throttle body.
- Disconnect the throttle body from the intake manifold.
- Remove the throttle body gasket.
- Disconnect the No. 8 water by-pass hose.
- Disconnect the following coolant hoses:
- INSTALL THE NEW THROTTLE BODY ASSEMBLY
- REINSTALL THE AIR CLEANER INLET HOSE ASSEMBLY
- Reinstall the air cleaner hose assembly.
- Reconnect the following from the air cleaner inlet hose assembly:
- Ventilation hose.
- Power steering idle-up vacuum hose.
- Fuel pressure regulator vacuum hose.
- RECONNECT THE NEGATIVE BATTERY CABLE
- CHECK FOR COOLANT LEAKS
- REINSTALL THE THROTTLE BODY COVER SUB-ASSEMBLY
- REINSTALL THE V-BANK COVER
- INSPECT THE FUNCTION OF THE THROTTLE BODY
- Connect the scantool to the DLC3 connector.
- Turn the ignition switch to the "ON" position.
- Press down on the accelerator pedal, and ensure that the throttle motor is operating properly and does not bind or make any friction noises.
- Inspect the TPS.
- Check that the MIL is "OFF".
- Using the throttle linkage fully open the throttle.
- Check that the "THROTTLE POS" on the CURRENT DATE screen shows the standard value.
Standard Value:
60% or greater
NOTE: If the Standard Value is out of specifications refer to the appropriate repair manual
- Start the engine and allow it to reach normal operating temperature.
- Turn the A/C switch to the "ON" position.
- Check idle speed.
- Turn the A/C to the "OFF" position.
- Check idle speed.NOTE: Refer to the appropriate repair manual for idle speed specifications.
- Check idle speed.
- Connect the scantool to the DLC3 connector.
- RESET AUDIO STATION PRESETS
- REINITIALIZE THE FOLLOWING COMPONENTS IF EQUIPPED:
- Compass
- Power windows
- Moon roof
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
2003 LX 470 Throttle Body Replacement
II. IDENTIFICATION OF AFFECTED VEHICLES
B. AFFECTED VIN RANGE
| Model | Year | VIN Range | |
|---|---|---|---|
| VDS | Ranges | ||
| LX 470 | 2003 | HT00W | 3532785 - 3533678 |
III. PREPARATION
B. TOOLS
- Standard Hand Tools
- Lexus Scantool
IV. WORK PROCEDURE
A. THROTTLE BODY INSPECTION
- REMOVE THE V-BANK COVER
- Remove the 2 nuts and 2 bolts holding the V- Bank cover.
- Unclip the fuel return line from the V-Bank cover.
- Check the throttle body lot number.
- If the throttle body lot number is:THROTTLE BODY LOT NUMBERS
4E02 4E06 4E10 4E14 4E18 4E22 4E03 4E07 4E11 4E15 4E19 4E23 4E04 4E08 4E12 4E16 4E20 4E24 4E05 4E09 4E13 4E17 4E21 4E25 proceed to throttle body replacement SECTION B.
- If the throttle body lot number is not in the list above proceed to step 2.
- If the throttle body lot number is:
- REINSTALL THE V-BANK COVER
- Reinstall the V-Bank cover using the 2 nuts and the 2 bolts.
- Reinstall the clip for the fuel return hose onto the V-Bank cover.
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
B. THROTTLE BODY REPLACEMENT
- RECORD AUDIO STATION PRESETS
- DISCONNECT THE NEGATIVE BATTERY CABLE
- REMOVE THE AIR CLEANER INLET HOSE ASSEMBLY
- REMOVE THE THROTTLE BODY ASSEMBLY
- INSTALL THE NEW THROTTLE BODY ASSEMBLY
- REINSTALL THE AIR CLEANER INLET HOSE ASSEMBLY
- Reinstall the air cleaner hose assembly.
- Reconnect the following from the air cleaner inlet hose assembly:
- Ventilation hose.
- Power steering idle-up vacuum hose.
- Fuel pressure regulator vacuum hose.
- RECONNECT THE NEGATIVE BATTERY CABLE
- CHECK FOR COOLANT LEAKS
- REINSTALL THE THROTTLE BODY COVER SUB-ASSEMBLY
- REINSTALL THE V-BANK COVER
- INSPECT THE FUNCTION OF THE THROTTLE BODY
- INSPECT THE FUNCTION OF THE THROTTLE BODY
- Connect the scantool to the DLC3 connector.
- Turn the ignition switch to the "ON" position.
- Press down on the accelerator pedal, and ensure that the throttle motor is operating properly and does not bind or make any friction noises.
- Inspect the TPS.
- Check that the MIL is "OFF".
- Using the throttle linkage fully open the throttle.
- Check that the "THROTTLE POS" on the CURRENT DATE screen shows the standard value.
Standard Value:
60% or greater
NOTE: If the Standard Value is out of specifications refer to the appropriate repair manual
- Start the engine and allow it to reach normal operating temperature.
- Turn the A/C switch to the "ON" position.
- Check idle speed.
- Turn the A/C to the "OFF" position.
- Check idle speed.NOTE: Refer to the appropriate repair manual for idle speed specifications.
- Check idle speed.
- Connect the scantool to the DLC3 connector.
- RESET AUDIO STATION PRESETS
- REINITIALIZE THE FOLLOWING COMPONENTS IF EQUIPPED:
- Compass
- VGRS System
- PROCEED TO SSC COMPLETION LABEL INSTALLATION
SSC COMPLETION LABEL INSTALLATION
After completing the repair and before returning the vehicle to the owner, an SSC completion label, which is enclosed in the owner's notification, must be affixed to the left front door hinge post, near the check strap.