DTC C1AA3: Vehicle Speed Sensor Circuit [11/2015 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.
5. Check for DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
   RESULT
   
   

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

Result: 

B 

REFER TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] )

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Trouble Codes.
5. Clear the DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
6. Make sure that the DTC detection conditions are met.

   HINT: 

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

7. Check for DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
   RESULT
   
   

   Result	Proceed to
   DTC C1AA3 is not output	A
   DTC C1AA3 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] )

Result: 

B 

See step  3

1. Replace the pre-collision city sensor (Refer to REMOVAL [11/2015 - ] ).
2. Perform Pre-collision City Sensor Learning (Refer to ADJUSTMENT [11/2015 - ] ).

NEXT 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Trouble Codes.
5. Clear the DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
6. Make sure that the DTC detection conditions are met.

   HINT: 

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

7. Check for DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
   RESULT
   
   

   Result	Proceed to
   DTC C1AA3 is not output	A
   DTC C1AA3 is output	B

Result: 

A 

END (PRE-COLLISION CITY SENSOR WAS DEFECTIVE) 

Result: 

B 

REPLACE SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) 

Refer to COMPONENTS [11/2015 - ] )