- Driving support ECU
- ECM
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000ZX9K |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - 11/2017] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P161796; Distance Control ECU Component Internal Failure; 2017 MY Sienna [08/2016 - 11/2017] | ||
|
DTC |
P161796 |
Distance Control ECU Component Internal Failure |
DESCRIPTION
In the dynamic radar cruise control system, the ECM and the driving support ECU communicate with one another to control the system based on some designation information. If the designation information of the ECM and driving support ECU is different or the driving support ECU is malfunctioning, this DTC is recorded.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|
|
P161796 |
While the dynamic radar cruise control is either preparing for operation or operating, if a designation signal from the ECM and a designation return signal from the driving support ECU do not match or the driving support ECU is malfunctioning for more than a specific amount of time, the ECM records this trouble code |
|
Does not come on |
PROCEDURE
|
1. |
REPLACE DRIVING SUPPORT ECU |
(a) Replace the driving support ECU (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; CRUISE CONTROL: DRIVING SUPPORT ECU: REMOVAL](/t3Portal/stylegraphics/info.gif)
).
|
|
2. |
CHECK DTC OUTPUT |
(a) Clear the DTCs (See page
).
(b) Perform the following to make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the malfunction cannot be detected.
(1) Drive the vehicle at a speed of 50 km/h (30 mph) or more.
(2) Turn the cruise control main switch on.
(c) Check for DTCs (See page
).
Result
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC P161796 is output |
B |
| A |
|
END |
| B |
|
|
|