Tire Monitor - Pressure Warning Valve/Sensor Activation

PRE-DELIVERY SERVICE
PD026-07

Title:
TIRE PRESSURE WARNING
VALVE/SENSOR ACTIVATION

Models:
'08 Scion xD

May 11, 2007

Introduction

The 2008 model year Scion xD 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 according to the procedure in this bulletin.

Applicable Vehicles

^ 2008 model year Scion xD 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

1. Connect TIS Techstream.





2. Turn the ignition switch to the "IG-ON" mode and check that the Low Tire Pressure Warning Light blinks.





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.

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

4. Using TIS Techstream, check for TPWS DTCs.

^ If NO DTCs are stored, go to step 5.

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





5. 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.

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.

6. Turn the ignition switch to the "IG-ON" mode.





7. 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. (Keep TIS Techstream connected.)

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

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

If the tire pressure values CANNOT be displayed on the TIS Techstream screen, the initialization is NOT completed. Repeat steps 7 - 8.