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Tire Monitor System - Warning Valve/Sensor Activation

T-SB-0011-08

January 19, 2008

Tire Pressure Warning Valve/Sensor Activation & Initialization

Service Category
General

Section
Pre-Delivery Service

Market
USA





Applicability

Introduction

The 2009 model year Camry 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 data. 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 valves/sensors must be activated for Japan-built vehicles by following the activation procedure in this TSB. NAP-built vehicles do not require activation but both Japan-built and NAP-built vehicles require the TPWS to be initialized by following the initialization procedure in this TSB.





Required Tools & Equipment

^ Additional TIS techstream units may be ordered by calling Approved Dealer Equipment (ADE).

^ The Toyota Diagnostic Tester and CAN Interface Module may also be used to perform the service procedures listed in this bulletin.





Warranty Information

Reference





^ After turning the ignition to the "IG-ON" position, the Low Tire Pressure Warning Light will blink for 1 minute and then turn ON until all the tire pressure warning valves/sensors are activated.

^ The Diagnostic Trouble Codes (DTCs) listed below may be stored in the TPWS ECU until the tire pressure warning valves/sensors are activated.





^ The DTCs will automatically clear when the tire pressure warning valves/sensors are activated.

Activation Procedure

ONLY perform the following activation procedure on Japan-built vehicles.

1. Connect TIS techstream.





2. Turn the ignition switch to the "IG-ON" position and check that the Low Tire Pressure Warning Light comes ON after blinking for 1 minute.





3. Press or remove the valve core to reduce the tire inflation pressure rapidly by 6 psi (0.4 kgf/sq.cm, 40 kPa) or more within 30 seconds.

If the tire inflation pressure is NOT reduced by 6 psi (0.4 kgf/sq.cm, 40 kPa) or more within 30 seconds the tire pressure warning valves/sensors will NOT be activated.

NOTE
This operation is required for the system to be activated and MUST be performed for each tire (EXCEPT the spare tire), one at a time.

4. Check that the Low Tire Pressure Warning Light goes OFF after all the tire pressure warning valves/sensors are activated.

5. Using TIS techstream check for TPWS DTCs.

^ If NO DTCs are stored go to step 1 of the Initialization Procedure.

^ If DTCs C2111 - C2114 are stored repeat step 3.

NOTE
Perform the following initialization procedure for BOTH NAP-built and Japan-built vehicles.

1. Turn the ignition switch to the "IG-ON" mode and connect TIS techstream.





2. Adjust all tires (except the spare tire) to the standard tire inflation pressure, as indicated on the Tire and Loading Information label located inside the driver's door jamb and confirm that the Low Tire Pressure Warning Light is OFF.

NAP-built:

Remove the ID number labels that are attached to each wheel and place the labels in the glove box.





3. Push and hold the Tire Pressure Warning "SET" Switch for 3 seconds until the Low Tire Pressure Warning Light blinks 3 times and then turns OFF to set the tire pressure initialization.

4. Turn the ignition switch to the "OFF" position and then to the "IG-ON" position.

NOTE
It is necessary for the ignition to be in the "IG-ON" mode at LEAST 5 minutes for initialization to complete correctly.

5. Check the tire pressure values of all the tires using TIS techstream.

NOTE

^ It can take 2 - 3 minutes for the tire pressure values to be displayed on the TIS techstream Data List.

^ If the tire pressure values CANNOT be displayed on the TIS techstream screen, the initialization is NOT completed. Repeat steps 2 - 4.

6. Adjust tire inflation pressure to the specified level.

^ If there is great difference between the current temperature of the tire and wheel (for example: shop temperature) and expected temperature (for example: outdoor temperature), this needs to be considered when adjusting the tire pressure.

^ Adjust the tire pressure when the tires are cold.
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