| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIHU |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: Distance Control Switch Circuit; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
Distance Control Switch Circuit |
DESCRIPTION
The distance control switch sets the vehicle-to-vehicle distance control 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 radar cruise control system is in operation. The steering pad switch uses the BEAN to communicate with each ECU. Therefore, it does not have a direct connection with the ECM. If there are any malfunctions in the communication line of the steering pad switch, one or more DTCs in the multiplex communication system are output.
WIRING DIAGRAM
PROCEDURE
|
1. |
INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly (See page
![2016 - 2020 MY Sienna [12/2015 - ]; AUDIO / VIDEO: STEERING PAD SWITCH: REMOVAL](/t3Portal/stylegraphics/info.gif)
).
(b) Inspect the steering pad switch assembly (See page
).
| NG |
|
|
|
2. |
INSPECT SPIRAL CABLE SUB-ASSEMBLY |
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.
(a) Remove the spiral cable sub-assembly (See page
).
(b) Inspect the spiral cable sub-assembly (See page
).
HINT:
The spiral cable makes a maximum of approximately 5 rotations.
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU, BODY GROUND) |
(a) Disconnect the A44 driving support ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D149-12 (DIST) - A44-7 (MODE) |
Always |
Below 1 Ω |
|
D149-12 (DIST) - Body ground |
Always |
10 kΩ or higher |
|
D149-2 (ECC) - Body ground |
Always |
Below 1 Ω |
(c) Reconnect the driving support ECU connector.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
INSPECT DRIVING SUPPORT ECU |
|
(a) Turn the ignition switch to ON. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A44-7 (MODE) - Body ground |
Distance control switch on |
0 to 2 V |
|
Distance control switch off |
11 to 14 V |
Text in Illustration
|
*a |
Component with harness connected (Driving Support ECU) |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
| NG |
|
|
|