Toyota Sienna Service Manual: Headlight Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls HEAD relay when signal is received from headlight dimmer switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch ON and push the intelligent tester main switch ON.
- Select the item below in the ACTIVE TEST and then check that the relay operates
BODY NO. 1:
2 INSPECT HEADLIGHT RELAY
- Inspect headlight relay continuity.
Resistance
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Measure voltage between the terminal as shown in the chart below
Voltage
REPAIR OR REPLACE HARNESS OR CONNECTOR
Ignition Switch Circuit
DESCRIPTION
The Multiplex network body ECU receives the ACC and IG signals from the
ignition switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the in ...
DRL Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls the DRL No.2 relay
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Connect the intelligent tester to DLC ...
Other materials:
Using the voice command system
Press the talk switch.
Select to train voice recognition.
Select to start the voice recognition
tutorial.
Select “OK” and say the desired command.
On the list screen, you can select the desired command.
To cancel the voice command system, press and hold the talk sw ...
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
...
Armrests
Pull the armrest down for use.
Front seat
Second seat (if equipped)
Adjusting the front seat armrests (if equipped)
Push the armrest down while pressing the
button.
NOTICE
To prevent damage to the armrest, do not apply too much load on the
armrest.
...
