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:
Selecting the audio
source
Switching between audio sources such as radio and CD are
explained in this section.
Changing audio source
Press the “AUDIO” button to display the audio source selection
screen.
If the audio source selection screen is not displayed, press the “AUDIO”
button again.
Select the des ...
Installation
1. INSTALL FRONT SEAT ASSEMBLY LH
Place the seat assembly in the cabin.
NOTICE:
Be careful not to damage the body.
Connect the connectors under the seat assembly.
Tighten the 2 bolts on the front side of the seat
assembly.
Torque: 37 N*m (375 kgf*cm, 27 ft.*lb ...
High Temperature
DTC 44-47 High Temperature
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-47
Sensor detects that DVD unit temperature is high.
(Over 80C)
Television display assembly
INSPECTION PROCEDURE
HINT:
After the inspection is completed, ...
