C2111

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2111/11: Transmitter ID1 Operation Stop

DTC C2111/11 - Transmitter ID1 Operation Stop

DTC C2112/12 - Transmitter ID2 Operation Stop

DTC C2113/13 - Transmitter ID3 Operation Stop

DTC C2114/14 - Transmitter ID4 Operation Stop

DTC C2115/15 - Transmitter ID5 Operation Stop

DESCRIPTION

The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the air pressure of the tires. The measured values are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU. The ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the warning light in the combination meter comes on. The tire pressure warning ECU stores a DTC when the tire pressure warning valve and transmitter stops transmitting signals. At this time, forcibly transmit the signals by releasing the tire pressure rapidly. The stored DTC is cleared when the signal transmission is resumed.





HINT: It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because it cannot be identified by the output DTC.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: It is necessary to perform the initialization Initialization after the registration Registration of the transmitter IDs into the tire pressure warning ECU if the ECU and/or one of the valve and transmitters have been replaced.

PROCEDURE

1. PERFORM FORCED TRANSMISSION OF TRANSMITTER ID OF ALL WHEELS
(a) Set the air pressure of all the wheels (including the grand spare tire) to the specified value Service Precautions.
(b) Make sure that the ignition switch is off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Turn the Techstream on.
(f) Check the values by referring to the table below. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor:





HINT: *: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25 C2121.
(g) Rapidly reduce the tire pressures for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.
(1) Check that each tire pressure data displayed on the Techstream has changed.
OK:
Each tire pressure data displayed on the Techstream will change to the value of the tire pressure.
NOTICE:
- It takes about 2 or 3 minutes to display the updated tire pressure data.
- When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees (including the grand spare tire). Then rapidly release the tire pressure and recheck it.

(2) After confirming that all of the tire pressure data displayed on the Techstream have changed, set the tire pressure to the appropriate specified values.
HINT: If the tire pressure data displayed on the Techstream has not changed after rechecking, go to other problem procedure (for malfunction in transmission or reception function) C2121.

NG -- INSPECT OTHER PROBLEM (MALFUNCTION IN TRANSMISSION OR RECEPTION FUNCTION)
OK -- END