Toyota Sienna Service Manual: Initialization
1. ZERO POINT CALIBRATION
NOTICE:
Make sure that the front passenger seat is not
occupied before performing the operation.
HINT:
Perform the zero point calibration and sensitivity check if
any of the following conditions occur.
- The occupant classification ECU is replaced.
- Accessories (seatback tray and seat cover, etc.) are
installed.
- The front passenger seat is removed from the vehicle.
- The passenger airbag ON/OFF indicator ("OFF")
comes on when the front passenger seat is not
occupied.
- The vehicle is brought to the workshop for repair due
to an accident or a collision.
- Zero point calibration and sensitivity check
procedures
HINT:
Make sure that zero point calibration has finished
normally, and then perform the sensitivity check.
- Adjust the seat position according to the table
below.
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Perform the zero point calibration by following
the prompts on the tester screen.
HINT:
Refer to the intelligent tester operator's manual
for further details.
OK:
"COMPLETE" is displayed.
- Perform the sensitivity check by following the
prompts on the tester screen.
- Confirm that the beginning sensor reading is
within the standard range.
Standard value:
-3.2 to 3.2 kg (-7 to 7 lb)
- Place a 30 kg (66.14 lb) weight (eg. a 30 kg
(66.14 lb) of lead mass) onto the front passenger
seat.
- Confirm that the sensitivity is within the standard
range.
Standard value:
27 to 33 kg (59.52 to 72.75 lb)
HINT:
- When performing the sensitivity check, use a
solid metal weight (the check result may not
appear properly if a liquid weight is used).
- If the sensitivity deviates from the standard
range, retighten the bolts of the front
passenger seat taking care not to deform the
seat rail. After performing this procedure, if
the sensitivity is not within the standard
range, replace the front seat assembly RH.
- If zero point calibration has not finished
normally, replace the front seat assembly RH.
The intelligent tester can be used in steps 4, 6, 8 and 9.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
3 PASSENGER AIRBAG ON/OFF INDICATOR CHECK
4 DTCs CHECK (Present and Past DTCs)
...
HINT:
Proceed to the troubleshooting for each circuit in the table
below.
Occupant Classification System
Symptom
Suspected area
The front passenger seat condition differ ...
Other materials:
Terminals of ECU
1. CHECK INSTRUMENT PANEL J/B ASSEMBLY
(MULTIPLEX NETWORK BODY ECU)
Disconnect the B6, B7 and B9 ECU connectors.
Disconnect the 1A, 1C, 1L and 1K J/B connectors.
Measure the voltage and resistance between each
terminal of the wire harness side connectors and
body gro ...
Installation
1. INSTALL BLOWER ASSEMBLY
(a) Install the blower assembly.
(b) Install the bolt, the 2 screws and the nut.
Torque: Bolt A
9.8 N*m (100 kgf*cm, 87 in.*lbf)
(c) Install the 2 clamps and 2 nuts and wire harness.
2. INSTALL INSTRUMENT PANEL SUB-ASSEMBLY WITH PASSENGER AIRBAG ASSEMBLY
H ...
Master Cylinder Pressure Sensor Malfunction
DTC C1246/46 Master Cylinder Pressure Sensor Malfunction
DESCRIPTION
Master cylinder pressure sensor is connected to the skid control ECU in the
actuator.
INSPECTION PROCEDURE
1 READ VALUE ON INTELLIGENT TESTER (MASTER CYLINDER PRESSURE SENSOR)
(a) Connect the intelligent tester to the DL ...