Tire Monitor System - Warning Valve/Sensor Activation

PRE-DELIVERY SERVICE
D033-07

Title:
TIRE PRESSURE WARNING
VALVE/SENSOR ACTIVATION
& INITIALIZATION

Models:
'08 Corolla

May 30, 2007

Introduction

The 2008 model year Corolla is equipped with a direct-type Tire Pressure Warning System (TPWS). Each wheel 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 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.

Applicable Vehicles

^ 2008 model year Corolla vehicles.





Required Tools & Equipment





Warranty Information

Reference





^ The Low Tire Pressure Warning Light will blink 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

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

1. Connect TIS Techstream.





2. Turn the ignition switch to the "IG-ON" mode and check that the Low Tire Pressure Warning Light blinks 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 spare tire), one at a time.

4. 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.

Initialization Procedure

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





1. Adjust all tires 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.

NOTE:
^ 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.





2. 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.

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

3. Check the tire pressure values of all the tires using TIS Techstream.

NOTE:
If the tire pressure values CANNOT be displayed on the TIS Techstream screen, the initialization is NOT completed. Repeat steps 2 - 3.