DESCRIPTION Initialization is necessary if one of the following occurs:
- The tire pressure warning ECU and receiver is replaced.
- A tire pressure warning valve and transmitter is replaced.
- Tires with different standard tire pressures are installed.
- A new vehicle is delivered.
Tire pressure initialization is
started by pressing and holding the tire pressure warning reset switch
with the ignition switch ON. The tire pressure warning ECU and receiver
flashes the tire pressure warning light of the combination meter
assembly 3 times and registers the tire pressure sent by the tire
pressure warning valve and transmitter after receiving an initialization
command signal. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note | | C2177/77 |
Initialization not Completed |
All conditions below are met:
- During initialization
- Tire pressure warning valve and transmitter is not in stop mode
- Signal is not received from tire pressure warning valve and transmitter for 20 minutes or more
- Vehicle speed is more than 40 km/h (25 mph) for 20 minutes or more
|
- Tire pressure warning valve and transmitter
- Wire harness or connector
- Tire pressure warning ECU and receiver
| - | CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU and receiver, read the
transmitter IDs 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.
- Initialization will not complete and DTC C2177/77 may be stored in the
tire pressure warning ECU and receiver if the Techstream is used to
perform initialization with the ECU Data Item list displayed for 10
minutes or longer.
PROCEDURE |
1. | CHECK FREQUENCY RECEIVING CONDITION |
(a) Check that the following conditions are not met: (1) Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.
HINT: If
the vehicle is located in an area such as the one described above, the
tire pressure warning light may illuminate after blinking 1 minute due
to interfering radio frequencies. (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 transmissions may be interrupted due to the surroundings, or devices installed by the user.
| NG |
 | CHECK IF ANY DEVICE IS INSTALLED BY USER |
|
OK |
 | |
| 2. |
PERFORM INITIALIZATION | (a) Perform initialization.
Click here
|
NEXT | |
| |
| 3. |
CONFIRM TIRE INFLATION PRESSURE (DATA LIST) |
(a) Turn the ignition switch off. (b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON. (d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(f) Check the values by referring to the table below. 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.* | |
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.* | |
ID 3 Tire Inflation Pressure |
ID 3 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.* | |
ID 4 Tire Inflation Pressure |
ID 4 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.* |
HINT:
- *: It may take a few minutes until the values are displayed.
For this vehicle, data reception from the tire pressure
warning valve and transmitter may worsen while displaying the Data List
and it may takes longer than usual to receive data.
If
data reception worsens while displaying the Data List, rapidly decrease
the tire pressure by 20 to 30 kPa (this increases the valve
transmission frequency).
- The wheel position cannot be determined from ID1 through ID4 on the Data List.
- 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.
|
Result | Proceed to | |
All tire pressure readings are equal to specified values. |
A | | Tire pressure values are not displayed. |
B |
| A |
| END |
| B |
| GO TO DTC (C2121/21 TO C2124/24) | |
