Toyota Sienna Service Manual: Memory Switch Circuit
DESCRIPTION
When the seat memory switch M1 or M2 is pressed, the position control ECU & switch (Seat ECU) transmits a signal of the memorized mirror position to the outer mirror control ECU. Then, the outer mirror control ECU drives the mirror motor.
HINT: The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See the Multiplex Communication System).
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to the DLC3.
- Ignition switch on.
- Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
- Check the DATA LIST for proper function of the seat memory switch.
D-SEAT
OK: Tester displayed MEM.
2 INSPECT SEAT MEMORY SWITCH
- Remove the seat memory switch.
- Measure the resistance according to the value(s) in the table below when the switch is operated.
Standard resistance
3 CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU)
- Disconnect the S33 switch connector.
- Disconnect the O9 ECU connector.
- Measure the resistance according to the value(s) in the table below.
Resistance
REPLACE OUTER MIRROR CONTROL ECU
Position Sensor Circuit
DESCRIPTION
When SET and 1 or 2 are pressed, the position sensor detects the mirror
position and sends the signal to
the outer mirror control ECU. Then when position 1 or 2 is pressed, the outer
...
Power Source Circuit
DESCRIPTION
This is the power source circuit for the outer mirror control ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT OUTER MIRROR CONTROL ECU (POWER SOURCE)
Disconnect the O9 o ...
Other materials:
Taking out the spare tire
Slide the front passenger’s seat to the frontmost lock position and
the right side second seat to the rearmost lock position so they will
not interfere with the jack handle.
Open the right side sliding door
and you will find the flap on the
floor. Pull back the flap to find
the ...
Air Inlet Damper Position Sensor Circuit
DESCRIPTION
This sensor detects the position of the air inlet control servo motor and
sends the appropriate signals to
the A/C amplifier. The position sensor is built in the air inlet control servo
motor.
The position sensor's resistance changes as the air inlet control servo motor
ar ...
Installation
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1. INSTALL REAR AIRBAG SENSOR LH
Check that the ignition switch is off.
Check that the battery negative (-) terminal is
disconnected.
CAUTION:
...
