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:
CD Sound Skips
INSPECTION PROCEDURE
1 CHECK CD
Check the CD.
OK:
The CD is clean.
HINT:
If dirt is on the CD surface, wipe it clean with a soft cloth
from the inside to the outside in a radial direction.
NOTICE:
Do not use a conventional record cleaner or antistatic
preservative.
2 CHECK CD
...
Opening/closing the sliding door
Sliding door handle
Open/close
Vehicles with power sliding
doors: The sliding door will be
automatically and completely
opened and closed by the following.
Pulling the outside handle.
Sliding the inside handle forward
to close or backward to
open.
Power sliding door switches (v ...
Power Seat Motor Circuit
DESCRIPTION
When the power seat control switch is operated, a command signal is sent to
the position control ECU
and switch assembly (power seat control switch and ECU). The front power seat
switch then controls the
appropriate seat motor as needed. This memory system does not use a seat
po ...
