DESCRIPTION The tire
pressure warning valve and transmitters that are installed in the tire
and wheel assemblies measure the tire pressure of each wheel. The
measured values are transmitted to the tire pressure warning ECU and
receiver in the vehicle as radio waves. The ECU compares the measured
tire pressure values with the tire pressure threshold. When the measured
tire pressure value is less than this threshold, the warning light in
the combination meter assembly illuminates. When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs is output. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note | | C2141 |
Transmitter ID1 Error | If
an "ERROR" signal is received 3 times consecutively, the tire pressure
warning valve and transmitter will be judged as defective and a DTC will
be output. This will happen in situations where the
inflation pressure is outside the specified range (0 to 380 kPa (0 to
3.9 kgf/cm2, 0 to 55 psi)), the temperature inside the tire is outside
the specified range (-40 to 120°C (-40 to 248°F)), or an error occurs in
the tire pressure warning valve and transmitter. |
Tire pressure warning valve and transmitter |
- | | C2142 |
Transmitter ID2 Error | If
an "ERROR" signal is received 3 times consecutively, the tire pressure
warning valve and transmitter will be judged as defective and a DTC will
be output. This will happen in situations where the
inflation pressure is outside the specified range (0 to 380 kPa (0 to
3.9 kgf/cm2, 0 to 55 psi)), the temperature inside the tire is outside
the specified range (-40 to 120°C (-40 to 248°F)), or an error occurs in
the tire pressure warning valve and transmitter. |
Tire pressure warning valve and transmitter |
- | | C2143 |
Transmitter ID3 Error | If
an "ERROR" signal is received 3 times consecutively, the tire pressure
warning valve and transmitter will be judged as defective and a DTC will
be output. This will happen in situations where the
inflation pressure is outside the specified range (0 to 380 kPa (0 to
3.9 kgf/cm2, 0 to 55 psi)), the temperature inside the tire is outside
the specified range (-40 to 120°C (-40 to 248°F)), or an error occurs in
the tire pressure warning valve and transmitter. |
Tire pressure warning valve and transmitter |
- | | C2144 |
Transmitter ID4 Error | If
an "ERROR" signal is received 3 times consecutively, the tire pressure
warning valve and transmitter will be judged as defective and a DTC will
be output. This will happen in situations where the
inflation pressure is outside the specified range (0 to 380 kPa (0 to
3.9 kgf/cm2, 0 to 55 psi)), the temperature inside the tire is outside
the specified range (-40 to 120°C (-40 to 248°F)), or an error occurs in
the tire pressure warning valve and transmitter. |
Tire pressure warning valve and transmitter |
- | HINT: It
is necessary to perform the following procedure to identify the tire
pressure warning valve and transmitter that is malfunctioning because it
cannot be identified by the output DTC. CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning valve and transmitter, read the
transmitter IDs and number of the transmitters (4 or 5) stored in the
old ECU using the Techstream and write them down before removal.
- It is necessary to perform initialization
 after registration
of the transmitter IDs into the tire pressure warning ECU and receiver if one of the valve and transmitters has been replaced.
PROCEDURE |
1. | IDENTIFY TRANSMITTER CORRESPONDING TO DTC (TIRE POSITION) |
(a) Turn the engine switch off. (b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG). (d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(f) Display the "ID Tire Position" value for each wheel using the Techstream.
(g) Refer to the following chart and check the wheel position of the DTC and transmitter match. Chassis > Tire Pressure Monitor > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
ID 1 Tire Position | ID1 Tire Position |
No Information or FL or FR or RL or RR or Spare or Judging |
ID1 tire position is displayed |
If no tire position information is stored, "No Information" will be displayed. | |
ID 2 Tire Position | ID2 Tire Position |
No Information or FL or FR or RL or RR or Spare or Judging |
ID2 tire position is displayed |
If no tire position information is stored, "No Information" will be displayed. | |
ID 3 Tire Position | ID3 Tire Position |
No Information or FL or FR or RL or RR or Spare or Judging |
ID3 tire position is displayed |
If no tire position information is stored, "No Information" will be displayed. | |
ID 4 Tire Position | ID4 Tire Position |
No Information or FL or FR or RL or RR or Spare or Judging |
ID4 tire position is displayed |
If no tire position information is stored, "No Information" will be displayed. |
HINT: Refer to the following chart for the Data List items that correspond to the DTCs. |
DTC No. | Detection Item |
Data List | | C2141 |
Transmitter ID1 Error | ID1 Tire Position | |
C2142 | Transmitter ID2 Error |
ID2 Tire Position | |
C2143 | Transmitter ID3 Error |
ID3 Tire Position | |
C2144 | Transmitter ID4 Error |
ID4 Tire Position | Chassis > Tire Pressure Monitor > Data List
|
Tester Display | | ID 1 Tire Position | |
ID 2 Tire Position | |
ID 3 Tire Position | |
ID 4 Tire Position |
| NEXT |
 | REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER | |
