Lexus ES: Transmitter ID not Registered (Main) (C2171)
DESCRIPTION
The IDs of each tire pressure warning valve and transmitter are registered to the tire pressure warning ECU and receiver.
When the ECU detects that a transmitter ID code is not registered in the ECU, this DTC is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| C2171 | Transmitter ID not Registered (Main) | Transmitter ID code is not registered. (When an ID code is unregistered for 3 minutes or more) | Tire pressure warning ECU and receiver | - |
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU and receiver, 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
.gif)
after registration of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.
PROCEDURE
| 1. | CONFIRM REGISTRATION CONDITION (REGISTERED ID CODES) |
(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.
Chassis > Tire Pressure Monitor > Data List| Tester Display |
|---|
| Registered ID 1 Code |
| Registered ID 2 Code |
| Registered ID 3 Code |
| Registered ID 4 Code |
OK:
The registered transmitter ID codes are displayed on the Techstream.
| OK | .gif) | REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
|
| 2. | PERFORM REGISTRATION (TRANSMITTER ID) |
(a) Perform registration.
Click here
|
| 3. | PERFORM INITIALIZATION |
(a) Perform initialization.
Click here
|
| 4. | CONFIRM TIRE INFLATION PRESSURE (DATA LIST) |
(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 |
|---|---|---|---|---|
| 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.
- 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.
| Tester Display |
|---|
| ID 1 Tire Inflation Pressure |
| ID 2 Tire Inflation Pressure |
| ID 3 Tire Inflation Pressure |
| ID 4 Tire Inflation Pressure |
| Result | Proceed to |
|---|---|
| All tire pressure readings are equal to specified values. | A |
| Tire pressure values are not displayed. | B |
| A | | END |
| B | | REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
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