- Tire pressure warning valve and transmitter
- Tire pressure warning ECU and receiver
- Tire pressure warning antenna
- Wire harness or connector
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000000Z8100WX |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2177/77; Initialization not Completed; 2007 MY LX470 [08/2006 - ] | ||
|
DTC |
C2177/77 |
Initialization not Completed |
DESCRIPTION
Initialization is necessary after replacing any of the ECU, tires with different tire pressure, or tire pressure warning valve and transmitter, after rotating the tires or when a new vehicle is delivered.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
C2177/77 |
Initialization is not completed after vehicle speed of 5 mph (8 km/h) or more continues for 20 minutes or more (total). |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
- When replacing the tire pressure warning ECU and receiver, read the IDs stored in the old ECU using the intelligent tester and write them down before removal.
-
It is necessary to perform initialization
![2007 MY LX470 [08/2006 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION")
after registration
of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU and/or valve and transmitter has been replaced.
PROCEDURE
|
1. |
CHECK FREQUENCY RECEIVING CONDITION |
(a) Check if the vehicle is located in areas such as the ones described below:
(1) Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.
HINT:
If the vehicle is located in areas described above, the tire pressure warning light may come on only in a particular area.
(2) Devices using similar radio frequencies are used in the vehicle.
OK:
Facilities, or devices that use similar radio frequencies are not located in the vicinity of the vehicle.
HINT:
Radio frequency may be interrupted due to surroundings or devices installed by the user.
| NG |
|
|
|
2. |
CHECK TIRE PRESSURE WARNING SELECT SWITCH |
(a) Check the position of the tire pressure warning select switch (MAIN or 2nd).
OK:
Tire pressure warning select switch position is the same as the type of registration ID of the wheels being used.
| NG |
|
|
|
3. |
PERFORM INITIALIZATION |
(a)
Perform initialization
.
|
|
4. |
READ VALUE USING DATA LIST (TIRE INFLATION PRESSURE) |
(a) Turn the ignition switch OFF.
(b) Connect the intelligent tester to the DLC3.
(c) Turn the ignition switch ON and the tester ON.
(d) Following the display on the intelligent tester, select the "DATA LIST".
(e) Check the values by referring to the table below.
Tire pressure warning ECU and receiver
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
TIREPRESS1 |
ID1 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.* |
|
TIREPRESS2 |
ID2 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.* |
|
TIREPRESS3 |
ID3 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.* |
|
TIREPRESS4 |
ID4 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.* |
|
TIREPRESS5 |
ID5 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.* |
HINT:
*: It may take about 2 or 3 minutes until the values are displayed.
|
Condition |
Proceed to |
|---|---|
|
All tire pressure readings are equal to specified values. |
A |
|
Tire pressure values are not displayed. |
B |
| A |
|
| B |
|
|
|