Toyota Sienna Service Manual: Distance Control Switch Circuit
DESCRIPTION
The distance control switch sets the vehicle-to-vehicle distance mode. The distance control switch is installed in the steering pad switch. The vehicle-to-vehicle distance set value can be changed by operating the steering pad switch (distance control switch) while the dynamic laser cruise control system is in operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT STEERING PAD SWITCH ASSEMBLY
- Remove the steering pad switch assembly
- Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT: When a malfunction is detected in the distance control switch, replace the steering pad switch assembly.
2 INSPECT SPIRAL CABLE
NOTICE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may cause airbag deployment. Be sure to read the page shown in the brackets.
HINT:
- Removal (34)
- Installation
- Remove the spiral cable.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT: The spiral cable makes a maximum of approximately 5 rotations.
3 CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - SPIRAL CABLE)
- Disconnect the D2 distance control ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
4 CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
5 INSPECT DISTANCE CONTROL ECU
- Remove the distance control ECU with the connector.
- Turn the ignition switch to the ON position.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Distance Control ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the distance control ECU. The distance
control ECU determines
information about the vehicle in front based on data from the laser sensor, and
t ...
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
...
Other materials:
Distance Control ECU Malfunction
DTC P1617 Distance Control ECU Malfunction
DESCRIPTION
In the dynamic laser cruise control system, the ECM and the distance control
ECU communicate with one
another to control the system based on some designation information. If the
designation information of the
ECM and distance control ECU ...
Short to B+ in Front Passenger Side Squib Circuit
DTC B0108/52 Short to B+ in Front Passenger Side Squib Circuit
DESCRIPTION
The front passenger side squib circuit consists of the center airbag sensor
assembly and the front
passenger airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0108/52 ...
Unlocking and locking the doors from the outside
Entry function (vehicles with a smart key system)
Carry the electronic key to enable this function.
Grip the driver’s door handle
to unlock the door. Grip the
passenger’s door handle to
unlock all the doors.*
Make sure to touch the sensor
on the back of the handle.
The doors ...
