DESCRIPTION
The millimeter wave radar sensor assembly receives yaw rate and acceleration sensor (airbag sensor assembly) signals from the airbag sensor assembly and skid control ECU (brake actuator assembly) via CAN communication. If the millimeter wave radar sensor assembly receives yaw rate and acceleration sensor (airbag sensor assembly) malfunction signals from the airbag sensor assembly or skid control ECU (brake actuator assembly), DTC C1A46 is stored.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1A46 |
Yaw Rate Sensor |
Any of the following conditions is met:
|
|
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
While the vehicle is being driven at a speed of 5 km/h (4 mph) or more. |
○ |
○ |
Malfunction Status |
The millimeter wave radar sensor assembly receives yaw rate and acceleration sensor (airbag sensor assembly) malfunction signals from yaw rate and acceleration sensor (airbag sensor assembly). |
○ |
- |
The millimeter wave radar sensor assembly receives yaw rate and acceleration sensor (airbag sensor assembly) zero point malfunction signals from skid control ECU (brake actuator assembly). |
- |
○ |
|
Detection Time |
10 seconds |
1 second |
|
Number of Trips |
1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
HINT:
Pre-collision system DTC C1A46 may be stored due to a malfunction in the VSC system. Therefore, it is necessary to check for and troubleshoot VSC system DTCs first.
(a) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
Vehicle stability control system DTCs are not output |
A |
Vehicle stability control system DTCs are output |
B |
B | ![]() |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
2. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1A46 is not output |
A |
DTC C1A46 is output |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
|
3. |
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
|
4. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1A46 is not output |
A |
DTC C1A46 is output |
B |
A | ![]() |
END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE) |
|
5. |
REPLACE YAW RATE AND ACCELERATION SENSOR (AIRBAG SENSOR ASSEMBLY) |
(a) Replace the yaw rate and acceleration sensor (airbag sensor assembly).
Click here
|
6. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1A46 is not output |
A |
DTC C1A46 is output |
B |
A | ![]() |
END (YAW RATE AND ACCELERATION SENSOR (AIRBAG SENSOR ASSEMBLY) WAS DEFECTIVE) |
B | ![]() |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
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