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) |
|
| - |
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:
PROCEDURE
1. | IDENTIFY TRANSMITTER NOT RECEIVED |
(a) Set the tire pressure to the specified value.
Click here
(b) Turn the power switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the power 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:
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:
(i) Check the Data List.
NOTICE:
(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 |
|
2. | CHECK TRANSMITTER ID |
(a) Turn the power switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the power 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:
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) | - | - |
(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 |
3. | CHECK TRANSMITTER ID |
(a) Turn the power switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the power 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:
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) | - | - |
(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 |
|
4. | REGISTRATION OF TRANSMITTER ID |
(a) Perform registration.
Click here
|
5. | PERFORM INITIALIZATION |
(a) Perform initialization.
Click here
NEXT | END |