Tire Monitor System - Activation & Initialization
L-SB-0111-11September 16, 2011
Tire Pressure Warning System Activation & Initialization
Service Category
General
Section
Pre-Delivery Service
Market
USA
Applicability
Introduction
2012 model year IS F vehicles are equipped with a direct-type Tire Pressure Warning System (TPWS). Each tire (except 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 valves/sensors must be activated and the system initialized according to the procedure in this bulletin.
Required Tools & Equipment
Warranty Information
Reference
^ After cycling the engine switch to the "IG-ON" mode, the Low Tire Pressure Warning Light will blink for 1 minute and then remain illuminated until all the tire pressure warning valves/sensors are activated
^ The Diagnostic Trouble Codes (DTCs) listed below are 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. Cycle the engine switch to the "IG-ON" mode and check that the Low Tire Pressure Warning Light flashes for 1 minute and then remains illuminated.
3. Press and hold either the right or left side of the satellite switch until the multi-information display for "TIRE SELECT" appears. Check that "MAIN" is selected.
4. Press or remove the valve core to reduce the tire inflation pressure rapidly by 6 psi (0.4 kgflcm2, 40 kPa), or more, within 30 seconds.
5. Using TIS Techstream check for TPWS DTCs.
^ If NO DTCs are stored go to step 1 of the Initialization Procedure.
^ If DTCs C21 11 - C21 14 are stored repeat step 4.
HINT and NOTE
Initialization Procedure
1. Adjust all tires to the standard tire inflation pressure as indicated on the Tire and Loading Information label located inside the vehicle.
2. Press and hold the left or right side of the satellite switch to display the "TIRE PRESSURE".
3. Press and hold the "ON/OFF" button 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 the "IG-ON" mode AT LEAST 5 minutes for initialization to complete correctly.
4. Cycle the ignition switch to "IG-OFF" mode and then to "IG-ON" mode.
5. Check the tire pressure values of all the tires using TIS techstream.
TPWS ECU / DATA LIST / TIREPRESS 1-4
It can take 2 - 3 minutes for the tire pressure values to be displayed on the TIS Techstream Data List.