Tire Monitor System - Initialization Procedure

T-SB-0177-10

July 7, 2010

Tire Pressure Warning System Initialization

Service Category

General

Section

Pre-Delivery Service

Market

USA

Applicability

Introduction


The 2011 model year Tundra is equipped with a direct-type Tire Pressure Warning System (TPWS). Each tire (except the spare tire) has a tire pressure warning valve/sensor that measures tire pressure. The data is transmitted to the Tire Pressure Warning System antenna/receiver and then to the Tire Pressure Warning System ECU.


During Pre-Delivery Service (PDS) the Tire Pressure Warning System must be initialized according to the procedure in this bulletin.

The Tire Pressure Warning System valves/sensors are activated at the manufacturing plant. Only the initialization process is required during PDS.

Required Tools & Equipment

Additional TIS Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at

1-800-368-6787.

Warranty Information
Initialization Procedure


1. Adjust all tires (except the spare tire) to the standard tire inflation pressure as indicated on the Tire and Loading Information label on the vehicle.



^ To adjust tire pressure correctly when outside temperature is significantly colder or warmer than shop temperature, follow the procedures outlined in the Tire Inflation Pressure Compensation and Adjustment service bulletin


^ Adjust the tire pressure when the tires are cold.



2. Cycle the ignition switch to the "IG-ON" position and check that the the Low Tire Pressure Warning Light is OFF.
3. Push and hold the Tire Pressure Warning "SET' Switch for 3 seconds until the Low Tire Pressure Warning Light blinks 3 times in 1 second intervals and then turns OFF, indicating the system initialization has begun.


The ignition switch MUST be left in the "IG-ON" position for AT LEAST 7 minutes for initialization to complete.



Initialization will NOT complete if the ignition switch is NOT left in the ~~lG-ON" position for AT LEAST 7 minutes.

4. Connect TIS Techstream to DLC3.


5. Select the Tire Pressure Warning System Data List.

TPWS ECU I DATA LIST I TIREPRESS 1-4


6. Confirm that each tire pressure on the TIS Techstream Data List shows the set value from step 1.


^ If the tire pressure is correct, initialization is complete.


^ If the tire pressure is incorrect, check the tire pressure gauge and repeat steps 1 - 6.



If the tire pressure values cannot by displayed on the TIS techstream screen, the initialization is NOT complete. Repeat steps 1-6.