Toyota Sienna Service Manual: Check that initialization has been completed
(a) Confirm that the data of tire pressure of all tires are displayed on the intelligent tester screen.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| TIREPRESS1 | ID1 tire inflation pressure (Absolute pressure) / min.: 100 kPa (1 kgf/cm2, 14 psi) max.: 449.35 kPa (4.5 kgf/cm2, 63 psi) | Actual tire inflation pressure | If 100 kPa (1 kgf/cm2, 14 psi) for absolute pressure is displayed, the data has not been received.* |
| TIREPRESS2 | ID2 tire inflation pressure (Absolute pressure) / min.: 100 kPa (1 kgf/cm2, 14 psi) max.: 449.35 kPa (4.5 kgf/cm2, 63 psi) | Actual tire inflation pressure | If 100 kPa (1 kgf/cm2, 14 psi) for absolute pressure is displayed, the data has not been received.* |
| TIREPRESS3 | ID3 tire inflation pressure (Absolute pressure) / min.: 100 kPa (1 kgf/cm2, 14 psi) max.: 449.35 kPa (4.5 kgf/cm2, 63 psi) | Actual tire inflation pressure | If 100 kPa (1 kgf/cm2, 14 psi) for absolute pressure is displayed, the data has not been received.* |
| TIREPRESS4 | ID4 tire inflation pressure (Absolute pressure) / min.: 100 kPa (1 kgf/cm2, 14 psi) max.: 449.35 kPa (4.5 kgf/cm2, 63 psi) | Actual tire inflation pressure | If 100 kPa (1 kgf/cm2, 14 psi) for absolute pressure is displayed, the data has not been received.* |
HINT:
*: It may take about 5 to 6 minutes until the values are displayed. If the values are not displayed after several minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2124/24 (See page TW-42).
NOTICE: The following operations can be used instead of above procedure:
1. Turn the ignition switch from OFF to ON.
2. Monitor the tire pressure values of all the wheels using the intelligent tester.
3. If the tire pressure values cannot be displayed on the intelligent tester screen, the initialization has failed.
4. It takes about 5 to 6 minutes to display the tire pressure data.
Initialization procedure
(a) Make sure that the ignition switch is off.
(b) Connect the intelligent tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Select "TIREPRESS" by followi ...
Other materials:
Engine Coolant Temperature / Intake Air Temperature Correlation
DESCRIPTION
The ECM calculates the difference between the readings of the coolant
temperature sensor and intake air
temperature sensor. If the difference is greater than 20°C (68°F), the ECM will
judge this as a malfunction
and will set this DTC.
HINT:
Waiting is required t ...
Airbag ECU Communication Stop
DTC B1281 Airbag ECU Communication Stop
DESCRIPTION
DTC B1281 is output when communication between the airbag ECU and the
multiplex network gateway
ECU stops for more than 10 seconds.
DTC No.
DTC Detection Condition
Trouble Area
B1281
Airbag ECU communi ...
Removal
HINT:
On the RH side, use the same procedures as on the LH side.
1. REMOVE REAR NO. 1 SEAT ASSEMBLY LH
HINT:
Captain seat type:
Center seat type:
2. REMOVE REAR DOOR WEATHERSTRIP LH
3. REMOVE ROPE HOOK ASSEMBLY
4. REMOVE BACK DOOR SCUFF PLATE
5. REMOVE ROOF HEADLINING GA ...
