Canada - Tire Monitor System - Lamp ON/DTC's C2115/C2125

Bulletin
2941

Issue Date
December 4, 2007

Market
Canada

Title:
TIRE PRESSURE WARNING LIGHT "ON" - M.I.L. "ON" DTC C2115 & C2125

Component
WHEELS & TIRES

Models
'07 - '08 Sienna & '07 Tundra

INTRODUCTION:
Some 2007 model year Tundra and 2007 -- 2008 model year Sienna vehicle customers may complain that the Tire Pressure Warning System (TPWS) Light is "ON" and one or both of the following DTCs are stored in the TPWS ECU.
- C2115 - Tire Pressure ID Number 5 - Stopped
- C2125 - Tire Pressure ID Number 5 Not Received
The TPWS ECU assemblies have been modified to correct this condition. Follow the repair procedure provided in this TSB to replace the TPWS ECU assembly.

APPLICABLE VEHICLES:
- 2007 - 2008 model year Sienna vehicles produced BEFORE the Production Change Effective VINs shown in this TSB.
- 2007 model year Tundra vehicles produced BEFORE the Production Change Effective VINs shown in this TSB.







PARTS INFORMATION:







WARRANTY INFORMATION:

PRODUCTION CHANGE INFORMATION:







Sienna:







Tundra:







REQUIRED SSTS:

NOTE:
Please contact your zone Area Parts & Service Managers to order additional Techstream units.

REPAIR PROCEDURE:
1. Using Techstream, confirm the condition by checking if DTCs C2115 and/or C2125 are stored in the TPWS ECU.
System Select > Tire Pressure Monitor > Trouble Codes
- If DTCs C2115 and/or C2125 are stored, go to step 2.
- If other DTCs are stored in the TPWS ECU, refer to the Repair Manual within E-TAS / TIS library:
- Division: Toyota
- Model: Tundra or Sienna
- Year: applicable model year
- Service Category: Suspension
- Section: Tire Pressure Monitoring
- Keyword: Tire and Wheel: Tire Pressure Warning System: Diagnostic Trouble Code Chart.

2. Remove and replace the TPWS ECU Assembly.

NOTE:
Before removing the TPWS ECU, record all four tire pressure warning valve/sensor ID numbers from the TPWS ECU Data List using Techstream: System Select > Tire Pressure Monitor > Data List

Refer to the Repair Manual within E-TAS / TIS library:
- Division: Toyota
- Model: Tundra or Sienna
- Year: applicable model year
- Service Category: Suspension
- Section: Tire Pressure Monitoring
- Keyword: Tire and Wheel: Tire Pressure Warning ECU: Removal
- Keyword: Tire and Wheel: Tire Pressure Warning ECU: Installation

3. Re-initialize any affected power systems.
4. If the TPWS Light comes "ON" after 20 minutes of driving, repeat step 1.

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.