DESCRIPTION If ID
registration via the automatic ID registration function is canceled or
the tire pressure warning ECU and receiver does not receive data from
the tire pressure warning valve and transmitters after the tire pressure
warning valve and transmitter ID registration is completed using the
Techstream, the tire pressure warning ECU and receiver stores DTC C2126. After
ID registration is complete using the Techstream, the tire pressure
warning light illuminates after blinking for 1 minute. When the tire
pressure warning ECU and receiver receives the data from all tire
pressure warning valve and transmitters with registered IDs, the tire
pressure is judged to be normal and the tire pressure warning light
turns off. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note | | C2126 |
Transmitter ID not Received (Main) |
- After transmitter ID registration is completed, ECU does not receive
data in 1 trip from transmitters whose IDs are stored in ECU.
- ID registration is canceled via the automatic ID registration function
|
- Transmitter ID registration failure
- Tire pressure warning valve and transmitter
- Tire pressure warning ECU and receiver
| - |
NOTICE: If
DTC C2126 is stored, C2128 may also be stored. If DTC C2128 is stored,
perform troubleshooting for DTC C2128 before performing troubleshooting
for DTC C2126. HINT: The
purpose of this DTC is to help prevent delivering a vehicle that has
incorrectly registered transmitter IDs. After all IDs are registered,
DTC C2126 is detected and the tire pressure warning light blinks for 1
minute and then illuminates. If the tire pressure warning light does not
go off after a little while, the transmitter IDs may be incorrectly
registered. CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU and receiver or 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 the ECU and/or one of the valve and transmitters has been replaced.
PROCEDURE |
1. | IDENTIFY TRANSMITTER NOT RECEIVED |
(a) Set the tire pressure to the specified value. Click here
(b) Turn the engine switch off. (c) Connect the Techstream to the DLC3.
(d) Turn the engine switch on (IG). (e) Turn the Techstream on.
(f) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(g) Display the "ID Tire Inflation Pressure" value for each wheel using the Techstream. Chassis > Tire Pressure Monitor > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
ID 1 Tire Inflation Pressure |
ID1 tire inflation pressure |
min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 | |
ID 2 Tire Inflation Pressure |
ID2 tire inflation pressure |
min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 | |
ID 3 Tire Inflation Pressure |
ID3 tire inflation pressure |
min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge)/ 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 | |
ID 4 Tire Inflation Pressure |
ID4 tire inflation pressure |
min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 |
HINT:
- *1: It may take a few minutes until the values are displayed.
- The wheel position cannot be determined from ID1 through ID4 on the Data List.
Chassis > Tire Pressure Monitor > Data List
|
Tester Display | | ID 1 Tire Inflation Pressure | |
ID 2 Tire Inflation Pressure | |
ID 3 Tire Inflation Pressure | |
ID 4 Tire Inflation Pressure | (h)
Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4
kg/cm2, 5.8 psi) within 30 seconds. If the "ID Tire Inflation Pressure"
value displayed on the Techstream does not change, the tire pressure
warning valve and transmitter corresponding to the unchanged "ID Tire
Inflation Pressure" value was the cause of the output DTC.
HINT:
- Identify the malfunctioning tire pressure warning valve and transmitter
by repeatedly decreasing the tire pressure for each tire.
- Record which "ID Tire Inflation Pressure" value corresponds to each tire.
(i) Check the Data List.
NOTICE:
- It may take a few minutes until the values are displayed.
- When an "ID Tire Inflation Pressure" value has not changed, reset the
tire pressure to the appropriate specified value and rotate the tire 90
to 270 degrees. Then rapidly release the tire pressure and recheck the
value.
- Record the transmitter IDs and positions of transmitters that are normal.
(j) After confirming that the "ID
Tire Inflation Pressure" value for one tire has changed, repeat this
procedure one by one. Identify the transmitter not received.
|
Result | Proceed to | |
Change in all tire inflation pressure data |
A | | No change in all tire inflation pressure data |
B | | No change in any tire inflation pressure data |
C |
| A |
 | END |
| C |
| GO TO STEP 3 |
|
B |
 | |
(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) Read the Data List according to the display on the Techstream. Chassis > Tire Pressure Monitor > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Registered ID 1 Code | Registered ID1 code |
min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID1 displayed |
- | | Registered ID 2 Code |
Registered ID2 code | min.: 0
max.: FFFFFFF*1 | ID No. registered for transmitter ID2 displayed |
- | | Registered ID 3 Code |
Registered ID3 code | min.: 0
max.: FFFFFFF*1 | ID No. registered for transmitter ID3 displayed |
- | | Registered ID 4 Code |
Registered ID4 code | min.: 0
max.: FFFFFFF*1 | ID No. registered for transmitter ID4 displayed |
- |
HINT:
- *1: Displayed only when the ID No. is not registered.
- The wheel position cannot be determined from ID1 through ID4 on the Data List.
Chassis > Tire Pressure Monitor > Data List
|
Tester Display | | Registered ID 1 Code | |
Registered ID 2 Code | |
Registered ID 3 Code | |
Registered ID 4 Code | (g) Disassemble all of the tires and check the tire pressure warning valve and transmitter IDs.
|
*1 | Tire Pressure Warning Valve and Transmitter |
- | - | |
*a | Transmitter ID (7-digit Number) |
*b | Wheel Speed Type Tire Inflation Pressure Display Function Identification Mark |
NOTICE: For
vehicles equipped with the wheel speed type tire inflation pressure
display function, be sure to use tire pressure warning valve and
transmitters with identification marks. (h) Confirm that the ID number on the transmitter and recorded transmitter ID match.
|
Result | Proceed to | |
Match | A | |
Do not match | B |
| A |
| REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
| B |
| GO TO STEP 4 |
(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) Read the Data List according to the display on the Techstream. Chassis > Tire Pressure Monitor > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Registered ID 1 Code | Registered ID1 code |
min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID1 displayed |
- | | Registered ID 2 Code |
Registered ID2 code | min.: 0
max.: FFFFFFF*1 | ID No. registered for transmitter ID2 displayed |
- | | Registered ID 3 Code |
Registered ID3 code | min.: 0
max.: FFFFFFF*1 | ID No. registered for transmitter ID3 displayed |
- | | Registered ID 4 Code |
Registered ID4 code | min.: 0
max.: FFFFFFF*1 | ID No. registered for transmitter ID4 displayed |
- |
HINT:
- *1: Displayed only when the ID No. is not registered.
- The wheel position cannot be determined from ID1 through ID4 on the Data List.
Chassis > Tire Pressure Monitor > Data List
|
Tester Display | | Registered ID 1 Code | |
Registered ID 2 Code | |
Registered ID 3 Code | |
Registered ID 4 Code | (g) Disassemble all of the tires and check the tire pressure warning valve and transmitter IDs.
|
*1 | Tire Pressure Warning Valve and Transmitter |
- | - | |
*a | Transmitter ID (7-digit Number) |
*b | Wheel Speed Type Tire Inflation Pressure Display Function Identification Mark |
NOTICE: For
vehicles equipped with the wheel speed type tire inflation pressure
display function, be sure to use tire pressure warning valve and
transmitters with identification marks. (h) Confirm that the ID number on the transmitter and recorded transmitter ID match.
|
Result | Proceed to | |
Match | A | |
Do not match | B |
| A |
| REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER |
|
B | |
| |
| 4. |
REGISTRATION OF TRANSMITTER ID | (a) Perform registration.
Click here
|
NEXT | |
| |
| 5. |
PERFORM INITIALIZATION | (a) Perform initialization.
Click here
| NEXT |
| END | | 
