Canada - Engine Control - A/T - Upshift/Downshift Issues

Bulletin
TSB2981

Issue Date
February 20, 2008

Market
Canada

Title
FREQUENT UPSHIFTING AND DOWNSHIFTING WITH CRUISE CONTROL "ON"

Component
ENGINE ELECTRICAL

Models
'06 - '08 RAV4

INTRODUCTION:

Some 2006 - 2008 model year RAV4 vehicles equipped with the 2AZ-FE engine may exhibit a condition while using the cruise control between 50 - 70 mph (80-113 km/h]. During this condition the transaxle will upshift and downshift frequently. The Engine Control Module [ECM] logic has been updated to improve this condition. Use the following repair procedure for customer complaint vehicles.






APPLICABLE VEHICLES:






PARTS INFORMATION:

NOTE:
- The ECM (SAE term: Powertrain Control Module/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.

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 the ECM [PCM] calibration has been updated. If the calibration ID listed is NOT the latest ECM [PCM] calibration - go to step 2.
2. 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.

Follow the procedures outlined in TSB, "Techstream ECU Flash Reprogramming Procedure", and flash the ECM [PCM] with the NEW calibration file update.

3. Start the engine and warm it up to normal operating temperature before test driving.
4. Test drive the vehicle to confirm proper vehicle operation and ECM [PCM] initial learning.

Refer to the Repair Manual within E-TAS / TIS library:
Division: Toyota
Model: RAV4
Year: 2006 or 2007 or 2008
Service Category: Automatic Transmission
Section: Tranaxle
Keyword for 2006: "U140F/U241E/U151F/U151E Automatic Transaxle: Automatic Transaxle System: Road Test"
Keyword for 2007: "U241E/U140F/U151E/U151F Automatic Transaxle: Automatic Transaxle System: Road Test"
Keyword for 2008: "U241E/U140F/U151F/U151E Automatic Transaxle: Automatic Transaxle System: Road Test"

5. 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 section for the CURRENT PART NUMBER]
- Calibration ID[s] [Refer to the Calibration Identification Chart for the NEW CALIBRATION ID(s)]
- 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.

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.