- CAN communication system
- ECM
- Skid control ECU (brake actuator assembly)
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018WSO |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: U010087,U010487,U012287; Lost Communication With ECM/PCM "A" Missing Message; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
U010087 |
Lost Communication With ECM/PCM "A" Missing Message |
|
DTC |
U010487 |
Lost Communication with Cruise Control Module Missing Message |
|
DTC |
U012287 |
Lost Communication with Vehicle Dynamics Control Module Missing Message |
DESCRIPTION
The ECM communicates with each sensor and ECU via CAN communication.
If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|
|
U010087 |
While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the ECM continuously receives a communication cut-off signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more. |
|
Does not come on |
|
U010487 |
While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, a communication error between the driving support ECU assembly and ECM is detected for 1 second or more. |
|
Does not come on |
|
U012287 |
When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication error between the skid control ECU (brake actuator assembly) and the ECM is detected for approximately 2.6 seconds or more. |
|
Does not come on |
CAUTION / NOTICE / HINT
NOTICE:
-
When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed (See page
![2018 - 2020 MY Sienna [11/2017 - ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT](/t3Portal/stylegraphics/info.gif)
).
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK FOR DTCs |
(a) Clear the DTCs.
Click here
(b) Perform the following to make sure that the DTC detection conditions are met.
HINT:
If the following conditions are not met, the system cannot detect the malfunction.
- Turn the ignition switch to ON.
- Turn the dynamic radar cruise control system on using the cruise control main switch (ON-OFF button).
- Drive the vehicle at 36 km/h (22 mph) or more for 5 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC U010087, U010487 and U012287 are not output |
A |
|
DTC U010087, U010487 or U012287 is output |
B |
| A |
|
| B |
|
|
|