Engine Controls - Extended Crank Time After Hot Soak

ENGINE:
EG044-06

July 6, 2006

Title:
1ZZ - FE ENGINE "EXTENDED CRANK" CONDITION

Models:
'05 - '06 Corolla & Matrix (2WD)

TSB UPDATE NOTICE:

The information contained in this TSB supercedes TSB No. EG042-05.

TSB No. EG042-05 is now obsolete and should be discarded.

Introduction

Some 2005 - 2006 model year Corolla and Matrix (2WD) vehicles equipped with a 1ZZ-FE engine may exhibit an intermittent extended crank condition after a hot soak. The engine control module logic has been modified to improve this condition.

NOTE:
^ Version 13.3a or later Diagnostic Tester software is required to perform this procedure.

^ Before proceeding, verify the ECM (Engine Control Module) (SAE term:

Powertrain Control Module/PCM) calibration has NOT been updated by checking for the Authorized Modifications Label (shown in step 1 of the Repair Procedure).

Applicable VEHICLES:
^ 2005 - 2006 model year Corolla and Matrix (2WD) vehicles equipped with the 1ZZ-FE engine.





Warranty Information

Applicable Warranty:

This repair is covered under the Toyota Federal 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.





Parts Information





Required SSTs





Calibration Identification Chart

Repair Procedure





1. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if 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 seen below are the 13.3a software version and may differ from subsequent software versions.

NOTE:
^ If the Calibration ID matches the "Previous Calibration ID" as shown in the Calibration Identification Chart proceed with flash reprogramming.

^ If the Calibration ID matches the "New Calibration ID" as shown in the Calibration Identification Chart, this vehicle has already been programmed.

Refer to the Technical Information System (TIS) for diagnostic procedures applicable to any stored DTCs.

3. If ECU calibration ID is NOT the same as the New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).

4. Flash Reprogram ECM (PCM)

NOTE:
A battery charger should be connected to the battery during the Flash Reprogram in order to maintain proper battery voltage and prevent damage to the ECM (PCM).

A. Follow the procedures outlined in TSB No. SS002-01, "ECU Flash Reprogramming Process", and flash the ECM (PCM) with the NEW calibration file update.

B. 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.

5. Follow the procedures outlined in TSB No. EG045-04, "Entering VIN During ECM (PCM) Replacement and/or DTC P0630," and write the VIN to the ECM (PCM).

6. The repair is complete. Test drive the vehicle to confirm normal operation.