Canada - Engine Controls - MIL ON/DTC P0456 Set

Bulletin
TSB3438

Issue Date
September 1, 2010

Market
Canada

Title
MIL "ON" DTC P0456

Component
FUEL

Models
'09-'10 Corolla; Matrix

INTRODUCTION:
Some 2009 - 2010 model year Corolla and Matrix vehicles with a 2AZ engine may exhibit a MIL "ON" condition with Diagnostic Trouble Code (DTC) P0456 - Evaporative Emission Control System Leak Detected (Very Small Leak). The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring.
Use the following repair procedure to address this condition.






APPLICABILITY:






WARRANTY INFORMATION:











PARTS INFORMATION:

NOTE:
- The ECM (PCM) should NOT be replaced as part of the repair procedure.
- Authorized Modification Labels may be ordered in packages of 25 from your facing PDC.






CALIBRATION INFORMATION:






REQUIRED TOOLS & EQUIPMENT:

REPAIR PROCEDURE:
1. Using ETAS Techstream, check for stored DTCs. If only DTC P0456 is present, proceed to step 2.
2. Clear DTCs.
3. Confirm if the fuel cap is loose. If it is loose, tighten the cap and finish the repair. If it is not loose, go to step 4.







4. 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 5.
5. 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. 2758, "Techstream ECU Flash Reprogramming Procedure", and flash the ECM (PCM) with the NEW calibration file update.

6. Install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:
- HV ECU part number [Refer to the Parts Information section for the CURRENT PART NUMBER]
- Calibration ID(s) [Refer to the Calibration Identification 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.

7. Using Techstream, run the Automatic EVAP System check.
System Select > Engine and ECT > Utility > EVAP System
- PASS - Repair is complete.
- FAIL - Refer to the Repair Manual for EVAP system diagnosis.

Refer to the Repair Manual within E-TAS / TIS library:
- Division: Toyota
- Model: Corolla / Matrix
- Year: 2009/2010
- Service Category: Engine/Hybrid System
- Section: Engine Control
- Keyword: 2AZ-FE Engine Control: SFI System: EVAP System

8. Test drive the vehicle to confirm proper vehicle operation.

NOTE:
Issue of this 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.