Toyota Sienna Service Manual: Rear Power Seat Switch Circuit
DESCRIPTION
When the power rear no. 2 seat switch is operated, a recline signal is sent to the fold seat control ECU.
The ECU activates the reclining motor based on the signal from the power rear no. 2 seat switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
- Remove the fold seat control ECU.
- 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 - FOLDING MOTOR)
- Disconnect the connectors from the fold seat control ECU.
- Disconnect the connector from the folding motor.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
3 INSPECT POWER REAR NO. 2 SEAT SWITCH
- Disconnect the connector from the power rear no. 2 seat switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
4 CHECK HARNESS AND CONNECTOR (FOLDING MOTOR - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
5 REPAIR OR REPLACE HARNESS OR CONNECTOR (WIRE INSIDE SEAT)
- Repair or replace harness or connector (wire inside seat) and check that the malfunction disappears.
OK: Malfunction disappears.
END
Lock Switch Circuit
DESCRIPTION
Each of the left and right seats has lock switches that detect the lock
condition of the seat legs to the floor
when the seat is in the original or folded-down state. If any of the loc ...
Fold Lock Switch Circuit
DESCRIPTION
Each of the left and right seats has a fold lock switch that detects the lock
condition of the seat legs and
floor when the seat is in the stowed state. If the fold lock switch detects ...
Other materials:
Basic inspection
When a malfunction is not confirmed by the DTC check,
troubleshooting should be carried out in all circuits
considered to be possible causes of the problem. In many
cases, by carrying out the basic engine check shown in the
following flowchart, the location of the problem can be found
quickly a ...
On-vehicle inspection
1. INSPECT STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the steering pad installed on the vehicle,
perform a visual check. If there are any defects as
mentioned below, replace the steering pad with a
new one:
Cuts, minute cracks or marked ...
Route cannot be Calculated
INSPECTION PROCEDURE
1 CHECK MAP DISC
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks on map disc.
2 SET DESTINATION
Set another destination and check if the system can
calculate the route correctly.
OK:
Route can be correctly calculated.
NO ...
