LANE DEPARTURE ALERT SYSTEM (w/o Dynamic Radar Cruise Control System), Diagnostic DTC:C1AA4, C1AA5, C1AA6

DTC Code DTC Name
C1AA4 Yaw Rate Sensor Circuit
C1AA5 Yaw Rate Sensor Power Supply Voltage Circuit
C1AA6 Yaw Rate Sensor Zero Point Malfunction

DESCRIPTION

The skid control ECU receives vehicle stability signals from the yaw rate and acceleration sensor and sends the signals to the lane departure warning camera. If the skid control ECU detects that the yaw rate and acceleration sensor is malfunctioning, the skid control ECU sends a malfunction signal to the lane departure warning camera and the lane departure warning camera stores DTC C1AA4, C1AA5 or C1AA6.

DTC No. DTC Detection Condition Trouble Area
C1AA4 While driving with the lane departure alert system activated and the lane departure alert main switch on, a yaw rate and acceleration sensor malfunction signal sent from the skid control ECU to the lane departure warning camera is detected for 5 seconds or more.

  • Vehicle stability control system

  • Lane departure warning camera
C1AA5 While driving with the lane departure alert system activated and the lane departure alert main switch on, a yaw rate and acceleration sensor power supply voltage malfunction signal sent from the skid control ECU to the lane departure warning camera is detected for 5 seconds or more.
C1AA6 While driving with the lane departure alert system activated and the lane departure alert main switch on, a yaw rate and acceleration sensor zero point malfunction signal sent from the skid control ECU to the lane departure warning camera is detected for 5 seconds or more.

INSPECTION PROCEDURE

Note

When the lane departure warning camera is replaced with a new one, adjustment of the lane departure warning camera beam axis must be performed Click here.

PROCEDURE


  1. CHECK FOR DTCs (ABS/VSC/TRAC)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output. A
      Vehicle stability control system DTCs are output. B

    5. Turn the engine switch off.


    B

    GO TO DTC CHART (VEHICLE STABILITY CONTROL SYSTEM) Click here

    A

  2. CLEAR DTCs


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.

    4. Clear DTCs.

    5. Turn the engine switch off.


    NEXT

  3. CHECK FOR DTCs (LANE DEPARTURE ALERT)


    1. Perform the following to make sure the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Drive the vehicle at a speed between 50 km/h (32 mph) and 220 km/h (138 mph) and operate the lane departure alert system.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.

    5. Check for DTCs.

      OK
      DTC C1AA4, C1AA5 or C1AA6 is not output.

    6. Turn the engine switch off.


    NG

    REPLACE LANE DEPARTURE WARNING CAMERA Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here