Tire Monitor System - Activation Procedure

L-SB-0052-08

August 14, 2008

Tire Pressure Warning System Activation

Service Category
General

Section
Pre-Delivery Service

Market
USA





Applicability

Introduction

2009 model year GX 470 vehicles are equipped with a direct-type Tire Pressure Warning System (TPWS). Each tire (including the spare tire) has a tire pressure warning valve/sensor and the measured tire pressure data is transmitted to the Tire Pressure Warning System antenna/receiver 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.





Required Tools & Equipment

NOTE

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





Warranty Information

Reference





^ After turning the ignition to the IG-ON position, the Low Tire Pressure Warning Light will blink for one minute and remain illuminated, 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" position and check that the Low Tire Pressure Warning Light blinks for 1 minute and then remains illuminated.





3. Check that the "MAIN/2nd" switch is in the UP position (system is in "MAIN" mode).





4. 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 (including the spare tire), one at a time.

5. Using TIS Techstream check for TPWS DTCs.

^ If NO DTCs are stored go to step 6.

^ If DTCs C2111 - C2115 are stored repeat step 4.

6. Adjust all tires (including the spare tire) to the standard tire inflation pressure as indicated on the Tire and Loading Information Label on the vehicle. 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.