Toyota Sienna Service Manual: Power Source Circuit
DESCRIPTION
Power is supplied to the fold seat control ECU through the L-RR2 SEAT and R-RR2 SEAT fuses.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FUSE (L-RR2 SEAT, R-RR2 SEAT)
- Remove the fuses from the R/B No. 3.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK HARNESS AND CONNECTOR (POWER SOURCE)
- Remove the fold seat control ECU.
- Disconnect the connectors from the fold seat control ECU.
- Measure the voltage according to the value(s) in the table below.
Standard voltage: LH side
RH side
3 CHECK HARNESS AND CONNECTOR (GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Indicator Circuit
DESCRIPTION
This system has two indicator lights. One of the indicator lights is built
into the fold seat switch. This
indicator light receives power from the fold seat control ECU. It comes on or ...
Fold Seat Switch Circuit
DESCRIPTION
When the fold seat switch is operated, a switch operation signal is sent to
the fold seat control ECU. The
ECU receives switch operation signals from each switch and activates the fold ...
Other materials:
Brake System Malfunction
DTC P1578 Brake System Malfunction
DESCRIPTION
This DTC is output when the VSC system has a problem. Check the VSC system
when this DTC is
output
DTC No.
DTC Detection Condition
Trouble Area
P1578
The ECM receives a brake system error signal for 0.2
...
Front door lock
INSPECTION
1. INSPECT FRONT DOOR W/ MOTOR LOCK ASSEMBLY LH
Apply battery voltage to the door lock and check
operation of the motor.
OK
HINT:
If the result is not as specified, replace the door lock
assembly.
Measure the resistance according to the value(s) in
the table ...
Disassembly
1. REMOVE NO. 1 HEADLIGHT BULB (HALOGEN HEADLIGHT)
Turn in the direction indicated by the arrow and
remove the No. 1 headlight bulb.
2. REMOVE DISCHARGE HEADLIGHT BULB (DISCHARGE HEADLIGHT)
Turn in the direction indicated by the arrow and
disconnect the socket.
...
