Antitheft/Keyless Entry - No Start/DTC B2799

T-SB-0078-09

March 2, 2009

"No Start" DTC B2799

Service Category
Vehicle Interior

Section
Theft Deterrent/Keyless Entry

Market
USA





Applicability

Introduction

Some customers may experience a crank and "No start" condition accompanied by immobiliser DTC B2799 and/or B2780, B2784, B2796, B2797, B279A. A production change has been made to the Transponder key ECU. Use the following repair procedure to address these customer concerns.





Warranty Information

APPLICABLE WARRANTY

^ This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 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

Production Change Information





This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown.





Required Tools & Equipment

NOTE

Additional TIS Techstream units and refrigerant service equipment may be ordered by calling Approved Dealer Equipment (ADE).

NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.

Repair Procedure

1. Verify that the vehicle will crank but not start.

2. Perform Health check and look for any immobiliser system DTCs.

3. If there are any immobiliser DTC's present, test the vehicle using all keys. If the condition is present with all the keys, proceed to step 4. If the problem is isolated to a single key, refer to the repair manual diagnostic chart for the specific DTC.

4. Replace transponder key ECU.

^ 2007 / 2008 Tundra:

Vehicle Interior Theft Deterrent / Keyless Entry Engine Immobiliser Transponder Key ECU: "Removal"





A. Location of the Transponder Key ECU Assembly is on the Air Conditioning Unit between bulkhead on the left.





B. Back side of Air Conditioning Unit, where the Transponder Key ECU Assembly is mounted.





C. Remove the Transponder Key ECU Assembly from the Air Conditioning Unit, by sliding the lower half out and moving downwards to release the top.

5. Install new Transponder Key ECU.

^ 2007 / 2008 Tundra:

Vehicle Interior Theft Deterrent / Keyless Entry Engine Immobiliser Transponder Key ECU: "Installation"

6. Connect TIS Techstream and clear all stored DTCs.

7. Verify Proper Operation of Immobilizer System.