| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000012W1D |
| Model Year Start: 2018 | Model: Camry | Prod Date Range: [03/2017 - 10/2020] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: C1A11; Front Radar Sensor Incorrect Axial Gap; 2018 - 2020 MY Camry [03/2017 - 10/2020] | ||
|
DTC |
C1A11 |
Front Radar Sensor Incorrect Axial Gap |
DESCRIPTION
When the vehicle is determined to be driving in a straight line or on a gradual curve based on signals from the yaw rate sensor, etc., the millimeter wave radar sensor assembly performs self diagnosis to check if the sensor beam axis has deviated. If the millimeter wave radar sensor assembly beam axis has deviated, the millimeter wave radar sensor assembly detects this and stores DTC C1A11.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1A11 |
Front Radar Sensor Incorrect Axial Gap |
When the ignition switch is ON, misalignment of the millimeter wave radar sensor assembly is detected for approximately 1 second or more. |
|
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. As a result, a DTC may be stored.
-
If the millimeter wave radar sensor assembly has been replaced, be sure to perform millimeter wave radar sensor assembly adjustment.
Click here
![2018 MY Camry [03/2017 - 06/2017]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK VEHICLE CONDITION |
(a) Check the operating conditions of the vehicle.
HINT:
DTC C1A11 may be stored if the millimeter wave radar sensor assembly beam axis is temporarily misaligned due to the vehicle being overloaded.
|
Result |
Proceed to |
|---|---|
|
Vehicle is not overloaded or has not been towed |
A |
|
Vehicle is overloaded or has been towed |
B |
| B |
|
|
|
2. |
CHECK WHEEL ALIGNMENT |
(a) Check the front and rear wheel alignment (toe).
for Front: Click here
for Rear: Click here
HINT:
DTC C1A11 may be stored if the millimeter wave radar sensor assembly beam axis is misaligned due to incorrect wheel alignment (toe).
|
Result |
Proceed to |
|---|---|
|
Front or rear wheel is misaligned (toe) |
A |
|
Front and rear wheels are not misaligned (toe) |
B |
| B |
|
|
|
3. |
ADJUST WHEEL ALIGNMENT |
(a) Adjust the alignment (toe) of the wheels.
for Front: Click here
for Rear: Click here
|
|
4. |
ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Perform millimeter wave radar sensor assembly adjustment.
Click here
|
|
5. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Body Electrical > Pre-Collision 2 > Clear DTCs
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON and wait 1 second or more.
(c) Check for DTCs.
Body Electrical > Pre-Collision 2 > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C1A11 is not output |
A |
|
DTC C1A11 is output |
B |
| A |
|
END |
| B |
|
|
6. |
INSPECT MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Check that the bracket of the millimeter wave radar sensor assembly is not deformed.
HINT:
If the bracket is deformed, replace the millimeter wave radar sensor assembly.
OK:
The bracket is not deformed.
| OK |
|
| NG |
|
|
7. |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Replace the millimeter wave radar sensor assembly.
Click here
(b) Adjust the millimeter wave radar sensor assembly.
Click here
|
|
8. |
CLEAR DTC (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Body Electrical > Pre-Collision 2 > Clear DTCs
| NEXT |
|
END |
|
9. |
ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Return the vehicle to normal.
(b) Perform millimeter wave radar sensor assembly adjustment.
Click here
|
|
10. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Body Electrical > Pre-Collision 2 > Clear DTCs
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON and wait 1 second or more.
(c) Check for DTCs.
Body Electrical > Pre-Collision 2 > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C1A11 is not output |
A |
|
DTC C1A11 is output |
B |
| A |
|
END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS MISALIGNED DUE TO THE VEHICLE BEING OVERLOADED OR TOWED) |
|
|
11. |
CHECK WHEEL ALIGNMENT |
(a) Check the front and rear wheel alignment (toe).
for Front: Click here
for Rear: Click here
HINT:
DTC C1A11 may be stored if the millimeter wave radar sensor assembly beam axis is misaligned due to incorrect wheel alignment (toe).
|
Result |
Proceed to |
|---|---|
|
Front or rear wheel is misaligned (toe) |
A |
|
Front and rear wheels are not misaligned (toe) |
B |
| A |
|
| B |
|
|
|