Toyota Sienna Service Manual: Wiper Signal Circuit
DESCRIPTION
The distance control ECU detects wiper operation. If the windshield wipers operate in the HI or LO mode, the cruise control is canceled and the warning sound "pong" is emitted once. In addition, the following warnings will continue until the cruise control main switch is turned off:
- The CRUISE main indicator light blinks.
- The master warning light illuminates.
- The warning code "E2" is displayed on the display in the combination meter.
After HI or LO wiper operation stops, pushing the cruise control main switch to + (ACCEL)/RES (RESUME) will resume the vehicle speed set prior to cancellation.
Cruise control is available when the windshield wipers operate in the intermittent mode.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT WIPER SYSTEM
Check that the windshield wipers operate in HI mode.
OK: Wiper function is normal.
2 CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - WINDSHIELD WIPER SWITCH)
- Disconnect the D2 distance control ECU connector and C12 windshield wiper switch connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Laser Sensor Power Source Circuit
DESCRIPTION
This circuit provides power to the laser sensor. The laser sensor emits radio
waves towards an object in
front and measures the distance and direction of the object by receiving the
...
Washer Signal Circuit
DESCRIPTION
The distance control ECU detects washer operation. The cruise control will be
cancelled by the distance
control ECU if the windshield wipers operate in the HI or LO mode. By detecting ...
Other materials:
Sensor signal check by test mode (signal check) (when using intelligent
tester)
(a) When having replaced the skid control ECU and/or
yaw rate and deceleration sensor, perform zero
point calibration of the yaw rate and deceleration
sensor.
HINT:
If the ignition switch is turned from the ON
position to the ACC or off during test mode
(signal check), DTCs of the signal ...
Adjustment procedure
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel horizontally
and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
...
Air conditioning
SST
RECOMMENDED TOOLS
HINT:
Torx is a registered trademark of Textron Inc.
EQUIPMENT
LUBRICANT
SUPPLEMENTAL RESTRAINT SYSTEM
SST
RECOMMENDED TOOLS
HINT:
Torx is a registered trademark of Textron lnc.
EQUIPMENT
SEAT BELT
SST
RECOMMENDED TOOLS
EQUIPMENT
THEFT ...
