Canada - Engine Controls - Extended Crank Time to Start

Bulletin
2554

Issue Date
July 07, 2006

Market
Canada

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

Component
ENGINE MECHANICAL

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

TSB UPDATE NOTICE:
The information contained in this TSB supercedes TSB No. 2338.
TSB No. 2338 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.







PARTS INFORMATION:







WARRANTY 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 are the 13.3a software version and may differ from subsequent software versions.

NOTE:
- If Calibration ID matches "Previous Calibration ID" as shown in the Calibration Identification Chart, proceed with flash reprogramming.
- If Calibration ID matches "New Calibration ID" as shown in the Calibration Identification Chart, this vehicle has already been programmed.
Refer to the ETAS 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. 0941, "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 PDC P/N 00451-00001-25.

5. Follow the procedures outlined in TSB No. 2133, "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.