| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000027Y56 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT RADAR SENSOR SYSTEM: U010487; Lost Communication with Cruise Control Module Missing Message; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
|
DTC |
U010487 |
Lost Communication with Cruise Control Module Missing Message |
DESCRIPTION
The millimeter wave radar sensor assembly communicates with the forward recognition camera via CAN communication.
If a communication error is detected between the forward recognition camera and millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores this DTC.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
DTC Output from |
Priority |
|---|---|---|---|---|---|
|
U010487 |
Lost Communication with Cruise Control Module Missing Message |
Detection condition:
Malfunction status:
Malfunction duration:
|
|
Front Radar Sensor |
A |
HINT:
If the DTCs are output simultaneously, the inspection area can be narrowed down.
|
Pattern |
DTC output part name (Display on GTS) |
Suspected Area (Malfunction Status) |
|
|---|---|---|---|
|
Millimeter Wave Radar Sensor Assembly |
Forward Recognition Camera |
||
|
Front Radar Sensor |
Front Recognition Camera |
||
|
U010487 |
U023587 |
||
|
○: DTC is output
-: DTC is not output |
|||
|
Pattern 1 |
○ |
○ |
Harness or connector (Open or short) |
|
Millimeter wave radar sensor assembly (Internal malfunction) |
|||
|
Forward recognition camera (Internal malfunction) |
|||
|
Pattern 2 |
○ |
- |
Harness or connector (Open or short) |
|
Millimeter wave radar sensor assembly (Internal malfunction) |
|||
|
Forward recognition camera (Internal malfunction) |
|||
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
-
When the millimeter wave radar sensor assembly has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly beam axis alignment and to clear the vehicle control history. Before performing the Driving Adjustment, make sure to read Before Starting Driving Adjustment.
HINT:
Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.
Triangle Target: Click here
![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)](/t3Portal/stylegraphics/info.gif)
Flat Surface Target: Click here
Driving Adjustment: Click here
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
-
When the forward recognition camera has been replaced with a new one, make sure to clear all stored vehicle control history of each system and the forward recognition camera beam axis alignment data.
HINT:
Forward recognition camera beam axis alignment can be performed by using "One Time Recognition", "Driving Adjustment" or "Camera Axis Adjustment Value Write".
One Time Recognition: Click here
Driving Adjustment: Click here
Camera Axis Adjustment Value Write: Click here
-
If the forward recognition camera has been replaced with a new one, make sure to perform Software Version Confirmation.
Click here
HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
Click here
PROCEDURE
|
1. |
CHECK FOR DTCs |
(a) Read each DTC and check the diagnosis pattern using the table below.
Chassis > Front Recognition Camera > Trouble Codes
Body Electrical > Front Radar Sensor > Trouble Codes
|
Pattern |
DTC output part name (Display on GTS) |
|
|---|---|---|
|
Front Radar Sensor |
Front Recognition Camera |
|
|
Pattern 1 |
U010487 |
U023587 |
|
Pattern 2 |
U010487 |
- |
|
Result |
Proceed to |
|---|---|
|
Pattern 1 |
A |
|
Pattern 2 |
B |
| A |
|
|
|
2. |
CHECK CAN MAIN WIRE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
Pre-procedure1
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the T21 forward recognition camera connector.
Procedure1
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T21-12 (CANH) - T21-11(CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
|
T21-12 (CANH) - Body ground |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
T21-11 (CANL) - Body ground |
||
|
T21-12 (CANH) - +B |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
T21-11 (CANL) - +B |
Post-procedure1
(d) None.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK FORWARD RECOGNITION CAMERA |
Pre-procedure1
(a) Disconnect the A128 millimeter wave radar sensor assembly connector.
(b) Connect the cable to the negative (-) auxiliary battery terminal.
Procedure1
(c) Using an oscilloscope, check the waveform.
OK:
|
Tester Connection |
Condition |
Tool Setting |
Specified Condition |
|---|---|---|---|
|
A128-8 (CA1P) - A128-7 (CA1N) |
Ignition switch ON |
1V/DIV., 100μs./DIV. |
Pulse generation |
Post-procedure1
(d) None.
| OK |
|
| NG |
|
|
|