Canada - Engine Controls - MIL ON, Multiple Misfire DTC's Set

T-TCI-3718

February 24, 2012

MIL "ON" DTC PO3O# AT COLD STARTUP

Service Category
Engine/Hybrid System

Section
Engine Control

Market
Canada





APPLICABILITY:

INTRODUCTION:

Some 2008-2010 model year Highlander HV vehicles may exhibit a MIL "ON" condition with one or more engine misfire DTCs P0300-P0306 present. The stored DTC (s) would be detected during the initial 45 seconds of engine run time following a cold soak. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring. Please follow the repair procedure below to address this condition.





WARRANTY INFORMATION:





CALIBRATION INFORMATION:





PARTS INFORMATION:





REQUIRED TOOLS & EQUIPMENT:

REPAIR PROCEDURE:

1. Using ETAS Techstream, check for store DTCs. Confirm if any of the following DTCs are present and were detected during the initial 45 seconds of engine run time:

^ P0300 - Random/Multiple Cylinder Misfire Detected

^ P0301 - Cylinder 1 Misfire Detected

^ P0302 - Cylinder 2 Misfire Detected

^ P0303 - Cylinder 3 Misfire Detected

^ P0304 - Cylinder 4 Misfire Detected

^ P0305 - Cylinder 5 Misfire Detected

^ P0306 - Cylinder 6 Misfire Detected

If other DTCs are present or the DTC was detected after 45 seconds of engine run time, this TSB does NOT apply. Continue diagnosis per Repair Manual procedures.





2. Check for the Authorized Modifications Label affixed to the vehicle 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. Flash reprogram the ECM (PCM).

NOTE
^ The GRB 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 the ETAS/TIS library > Tools > tools and equipment > GR8 Battery Diagnostic Station Instructions Manual.

Follow the procedures outlined in TSB No. 2758 "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 Information chart for the NEW PART NUMBER]

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

^ Dealer Code

^ Repair Date

^ Change Authority [This TSB Number]

B Affix the Authorized Modification Label to the vehicle at the location show 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 Toyota Motor Sales, Canada