Engine Controls - MIL ON/DTC's P0133/P0153 Set
ENGINEEG002-04
REVISED
February 27, 2004
Title:
M.I.L. "ON" DTC P0133/P0153
Models:
'04 GS 430, LS 430 & SC 430
TSIB REVISION NOTICE:
March 25, 2004: VIN information has been added. Previous versions of this TSIB should be discarded.
Introduction
Certain 2004 model year GS 430, LS 430 and SC 430 (3UZ-FE) vehicles may exhibit a M.I.L. "ON" condition with Diagnostic Trouble Code P0133 and/or P0153 in the Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM). The ECM software has been improved to correct this condition.
Applicable Vehicles
^ 2004 model year GS 430, LS 430 and SC 430 vehicles equipped with 3UZ-FE engines produced BEFORE the Productive Change Effective VINs shown below.
Production Change Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Lexus Emissions 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.
Required SSTs
NOTE:
Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards or other SSTs may be ordered by calling SPX/OTC at 1-800-933-8335.
Calibration Identification Information
Repair Procedure
1. Check for the Authorized Modification Label affixed to the vehicle in the location shown in Figure 1. Confirm that the ECM (PCM) calibration has been updated. If not the latest ECM (PCM) calibration - go to step 2.
2. Connect the Diagnostic Tester to the vehicle and select "CURRENT ECU CAL" from the ECU REPROGRAM MAIN MENU." Determine the vehicle's current ECU calibration (see Figure 2).
^ The sample screen prints figure 2 are the 10.2a software version, and may differ from subsequent software versions.
NOTE:
^ If Calibration ID matches "Previous Calibration ID" as shown in Calibration Identification chart, proceed with flash reprogramming.
^ If Calibration ID matches "New Calibration ID" as shown in Calibration Identification chart, this vehicle has already been reprogrammed. Refer to Repair Manual for diagnosis.
3. If ECU calibration ID is not the same as the "New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).
Flash Reprogram ECM
CAUTION:
When reprogramming the LS 430, 10.2a production version (dated 12/11/03) or later MUST be used. Using any previous versions of software for reprogramming may result in IRREPARABLE DAMAGE to the ECU!
NOTE:
If the "Check Engine" light is ON when ignition is turned back on to begin the reprogramming process, a scan tool cable problem exists. Refer to TSIB No. SS003-01, "ECU Flash Reprogramming Error Message."
1. Disconnect the radiator fan connectors, and connect a battery charger to the vehicle's battery. This will avoid voltage variations that can permanently damage the ECM (PCM) during the reprogramming process.
2. Follow the procedures outlined in TSIB No. SS001-01, "ECU Flash Reprogramming Process," and flash the ECM (PCM) with new calibration file update.
3. Reconnect the radiator fan connectors, and disconnect the battery charger.
4. Enter the required information on the Authorized Modifications label and affix it to the vehicle at the location shown in Figure 1. The Authorized Modifications label is available through the MDC, P/N 00451-00001-LBL.
Repair Procedure (Continued)
1. Perform the following procedures to check the 02 sensor circuit.
A. Complete the "READINESS MONITOR DRIVE PATTERN" to confirm if there is a failure in the 02 sensor circuit. Refer to the Technical Information System (TIS) to the applicable model and year Repair Manual: Diagnostics: SFI System: Readiness Monitor Drive Pattern - Heated Oxygen Sensor Monitor.
B. Using the Diagnostic Tester, confirm if "complete" is shown on the "MONITOR STATUS" screen. If "complete" continue to step 1-C. If it is not, perform step 1-A again.
C. Using the Diagnostic Tester, confirm if DTC P0133/P0153 is displayed in the "PENDING CODES" or "CURRENT CODES" fields.
If DTC P0133/P0153 is displayed, there is a failure in the 02 sensor circuit. Perform the troubleshooting procedures according to the Repair Manual.