C2113

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2111/11-C2115/15: Transmitter ID1 Operation Stop
C2115/15 - Transmitter ID5 Operation Stop

DESCRIPTION

The tire pressure warning valves and transmitters installed in the tire and wheel assemblies measure the air pressures 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 turns 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 this procedure in order to identify the malfunctioning tire pressure warning valve and transmitter because it cannot be identified by only the output DTCs.
* DTC C2115/15 is used only when the vehicle is equipped with a ground spare tire.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM FORCED TRANSMISSION OF TRANSMITTER ID OF ALL WHEELS

(a) Set the tire pressure to the specified value Component Tests and General Diagnostics.

(b) Connect Techstream to the DLC3.

(c) Turn the ignition switch on (IG) and turn the tester on.

(d) Enter the following menus:

(1) Select: Chassis / Tire Pressure Monitor / Data List

(e) Check the values by referring to the table below.

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.

(f) Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(g) Check that each tire pressure displayed on Techstream screen has changed.

OK:

Each tire pressure displayed on Techstream screen will change to the value of the tire pressure.

NOTICE:
* It takes about 2 or 3 minutes to display the updated tire pressure data.
* If 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°. Then rapidly release the tire pressure and recheck it.

(h) After confirming that all of the tire pressure data displayed on Techstream screen has changed, set the tire pressure to the appropriate specified values.

HINT
If the tire pressure data displayed on Techstream screen has not changed after rechecking, inspect for another problem (malfunction in transmission or reception function) C2121.

NG -- GO TO TRANSMITTER AND RECEIVER INSPECTION PROCEDURE C2121

OK -- END