Toyota Sienna Service Manual: Light Control Switch Circuit
DESCRIPTION
This circuit detects the state of the headlight dimmer switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch ON and push the intelligent tester main switch ON.
- Select the items below in the DATA LIST, and read the displays on the intelligent tester
BODY NO.1:
2 INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY
- Inspect headlight dimmer switch assembly
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Remove the instrument panel junction block assembly.
- Measure voltage between the each of terminals as shown in the chart below.
Voltage
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Front Fog Light Circuit
DESCRIPTION
The Multiplex network body ECU controls FOG relay when signal is received
from headlight dimmer
switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INT ...
Automatic Light Control Sensor Circuit
DESCRIPTION
The Multiplex network body ECU receives the signal from the automatic light
control sensor.
HINT:
DTC code is output when malfunction of automatic light control sensor or open or
...
Other materials:
Installation
HINT:
Install the RH side by the same procedure as the LH side.
1. INSTALL REAR SPEED SENSOR
(a) Clean the contacting surface of the axle hub and a
new skid control sensor.
NOTICE:
Keep the sensor rotor clean.
(b) Place the speed sensor on the axle hub so that the
connector is positioned ...
Stowing the spare tire
Lay down the tire with the outer
side (valve stem) facing up, and
install the holding bracket.
Turn the jack handle clockwise
to raise the tire until the tire is in
the correct position as the jack
handle skips.
Stow the tools.
The compact spare tire
The compact s ...
Key Lock-in Prevention Function does not Work Properly (Manual
Operation and Operation Interlocked with Key are Active)
DESCRIPTION
The un-lock warning switch turns ON when the key is inserted in the ignition
key cylinder. The courtesy
light switch turns ON when the driver side door is opened. These 2 switches are
monitored by the body
ECU.
In order to prevent the key from being locked in, the body ECU cont ...
