DTC C1AA3: Vehicle Speed Sensor Circuit [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTCs (ABS/VSC/TRAC)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

Check if DTCs are output.

Result

Result	Proceed to
Electronically controlled brake system DTCs are not output.	A
Electronically controlled brake system DTCs are output.	B

Turn the power switch off.

B → See step 4

A: Go to next step

CLEAR DTCs
1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.
4. Clear DTCs.
5. Turn the power switch off.
NEXT: Go to next step
CHECK FOR DTCs (LANE DEPARTURE ALERT)
1. Perform the following to make sure the DTC detection conditions are met.
  HINT:
  
  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 Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.
5. Check for DTCs.
  OK
  
  DTC C1AA3 is not output.
6. Turn the power switch off.
NG → See step 6

OK → See step 5
GO TO DTC CHART (ELECTRONICALLY CONTROLLED BRAKE SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ]
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
REPLACE LANE DEPARTURE WARNING CAMERA. Refer to REMOVAL [08/2013 - ]