Canada - Engine Controls - MIL ON, DTC P219a or P219B Set

L-TCI-3264

January 16, 2013

MIL "ON" DTC P219A OR P219B

Service Category
Engine/Hybrid System

Section
Engine Control

Market
Canada





APPLICABILITY:

INTRODUCTION:

Some 2012 model year RX 350 vehicles may exhibit a MIL "ON" condition with DTC P219A or P219B present The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occuring Please follow the repair procedure below to address this condition.





WARRANTY INFORMATION:





CALIBRATION INFORMATION:





PARTS INFORMATION:





REQUIRED TOOLS & EQUIPMENT:

REPAIR PROCEDURE:

1. Using Techstream, confirm one of the following DTCs are present:

^ P219A - Bank 1 Air-Fuel Ratio Imbalance

^ P219B - Bank 2 Air-Fuel Ratio Imbalance

If other DTCs are present, this bulletin does NOT apply. Continue diagnosis per Repair Manual procedures.





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.

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 reprogramming the vehicle.

^ For details on how to use the GR8 Battery Diagnostic Station, refer to the GR8 Battery Diagnostic Station Instruction Manual located on ETAS/TIS library > Tools > tools and equipment > GR8 Battery Diagnostic Station Instruction Manual.

Follow the procedures outlined in TSB No.2401 "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 In formation section for the CURRENT PART NUMBER]

^ Calibration ID(s) [Refer to the Calibration In formation chart for the NEW CALIBRATION ID]

^ Dealer Code

^ Repair Date

^ Change Authority [This TSB number]

B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through your facing PDC P/N 00451-00001-25.

5. Start the engine and warm it up to normal operating temperature and test drive to confirm proper vehicle operation.

NOTE:
Issue of the Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.

© 2012 Lexus, a division of Toyota Motor Sales, Canada