- Driving support ECU
- ECM
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000ZX9F |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - 11/2017] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P161581; Distance Control ECU to Engine ECU Invalid Serial Data Received; 2017 MY Sienna [08/2016 - 11/2017] | ||
|
DTC |
P161581 |
Distance Control ECU to Engine ECU Invalid Serial Data Received |
DESCRIPTION
The driving support ECU and ECM always communicate the data for vehicle general control and diagnosis function each other through communication line.
The driving support ECU determines the distance, relative speed, and target deceleration speed based on the signal from the millimeter wave radar sensor, and it transmits a control demand signal to the ECM.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|
|
P161581 |
While the dynamic radar cruise control is either preparing for operation or operating, if communication data from the driving support ECU is logically inconsistent for a certain amount of time, the ECM records this logical error 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 |
(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.
(3) Push the -SET switch to activate the cruise control.
(c) Check for DTCs (See page
).
Result
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC P161581 is output |
B |
| A |
|
END |
| B |
|
|
|