DESCRIPTION
The forward recognition camera receives vehicle speed signals from the skid control ECU. If the skid control ECU receives a vehicle speed sensor malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA3 is stored.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1AA3 |
Vehicle Speed Sensor Circuit |
3 seconds after the ignition switch is turned to ON, a signal from the skid control ECU indicating a malfunction in a vehicle speed sensor is detected by the forward recognition camera for 5 seconds or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. |
CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) |
HINT:
If DTC C1AA3 is stored, the vehicle stability control system may be malfunctioning. Check for DTCs related to the vehicle stability control system first.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Check for DTCs.
Click here
Click here
Result |
Proceed to |
---|---|
Vehicle stability control system DTCs are not output |
A |
Vehicle stability control system DTCs are output (for Vacuum Brake Booster) |
B |
Vehicle stability control system DTCs are output (for Hydraulic Brake Booster) |
C |
B | ![]() |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
C | ![]() |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
2. |
CHECK DTC OUTPUT |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / LKA/LDA / Trouble Codes.
(e) Clear the DTCs.
Click here
(f) Make sure that the DTC detection conditions are met.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
(g) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1AA3 is output |
A |
DTC C1AA3 is not output |
B |
B | ![]() |
USE SIMULATION METHOD TO CHECK |
|
3. |
REPLACE FORWARD RECOGNITION CAMERA |
(a) Replace the forward recognition camera.
Click here
(b) Adjust the forward recognition camera.
Click here
|
4. |
CHECK DTC OUTPUT |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / LKA/LDA / Trouble Codes.
(e) Clear the DTCs.
Click here
(f) Make sure that the DTC detection conditions are met.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
(g) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC C1AA3 is output (for Vacuum Brake Booster) |
A |
DTC C1AA3 is output (for Hydraulic Brake Booster) |
B |
DTC C1AA3 is not output |
C |
A | ![]() |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
B | ![]() |
REPLACE SKID CONTROL ECU (MASTER CYLINDER SOLENOID) |
C | ![]() |
END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
Customize Parameters
CUSTOMIZE PARAMETERS
PROCEDURE
1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
HINT:
The following items can be customized.
NOTICE:
When the customer requests a change in a function, first make sure that
the function can be customized.
Record the current settings before cus ...
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Detection Item
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