| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIHQ |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: ECU Power Source Circuit; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
ECU Power Source Circuit |
DESCRIPTION
This circuit provides power to operate the driving support ECU. The driving support ECU determines information about the vehicle in front based on data from the radar sensor, and then decides how much acceleration and/or deceleration is needed to maintain the set distance. The driving support ECU also requests the skid control ECU to apply braking and to sound the buzzer.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU - POWER SOURCE AND GROUND) |
|
(a) Disconnect the driving support ECU connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A44-30 (B) - Body ground |
Ignition switch ON |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A44-25 (GND) - Body ground |
Always |
Below 1 Ω |
Text in Illustration
|
*a |
Front view of wire harness connector (to Driving Support ECU) |
| OK |
|
PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
![2016 MY Sienna [12/2015 - 08/2016]; CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)
| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR |
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