Toyota Sienna Service Manual: Reclining Motor Circuit
DESCRIPTION
The fold seat control ECU receives a switch operation signal from the power rear no. 2 seat switch and the fold seat switch, and activates the reclining motor. At this time, the Hall IC (seatback position sensor) detects the actuation of the seatback and sends a seatback actuation signal to the fold seat control ECU.
The fold seat control ECU uses signals from the Hall IC (seatback position sensor) to detect if an object is caught or if any other abnormal condition has occurred.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
- Remove the fold seat control ECU with connectors still connected.
- Measure the voltage according to the value(s) in the table below.
Standard voltage: LH side
RH side
2 CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - RECLINING MOTOR)
- Disconnect the connectors from the fold seat control ECU.
- Disconnect the connectors from the reclining motor.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
3 INSPECT RECLINING MOTOR
- Check reclining motor operation.
- Check if the motor rotates smoothly when the battery is connected to the reclining motor.
OK: LH side
RH side
REPLACE FOLD SEAT CONTROL ECU
Folding Motor Circuit
DESCRIPTION
The fold seat control ECU receives a switch operation signal from the fold
seat switch and activates the
folding motor. At this time, the Hall IC (seat cushion position sensor) detects ...
Release Actuator Circuit
DESCRIPTION
The fold seat control ECU receives a switch operation signal from the fold
seat switch and activates the
release actuator. The release actuator releases the lock of the stowed seat
b ...
Other materials:
Catalyst monitor (active air-fuel ratio control
type)
(a) Preconditions
The monitor will not run unless:
The MIL is OFF.
(b) Drive Pattern
(1) Connect an intelligent tester.
(2) Turn the ignition switch to the ON position.
(3) Turn the tester or scan tool ON.
(4) Clear the DTCs.
(5) Start the engine and warm it up.
(6) Drive ...
Installation with LATCH system (third seat)
Manual seat
Fold the seatback while pulling
the strap. Return the seatback
and secure it at the 1st lock
position (most upright position).
Adjust the seatback to the
11th lock position.
1st lock position
11th lock position
Power seat
Fold down the seatb ...
Torque Converter Clutch Solenoid Performance
(Shift Solenoid Valve DSL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, air-flow meter,
turbine (input) speed sensor,
intermediate (counter) shaft speed sensor and crankshaft position sensor to
monitor the engagement
condition of the lock-up clutch.
Then the ECM compares the eng ...
