DTC C1A4A: Skid Control Buzzer Circuit [09/2014 - 10/2015]: Procedure

1. Turn the power switch off.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test (See page. Refer to DATA LIST / ACTIVE TEST [09/2014 - 10/2015] ).
   ABS/VSC/TRAC
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Buzzer	Skid control buzzer	ON/OFF	The buzzer can be heard.

   OK

   Skid control buzzer sounds.

Result:  NG

NG 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM 

(See page. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - ] )

Result:  OK

OK 

See step  2

1. Replace the skid control ECU assembly with a new one (See page. Refer to REMOVAL [09/2014 - ] ).

Result:  NEXT

NEXT 

See step  3

1. Clear the DTCs (See page. Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).
2. Check for DTCs (See page. Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).

   OK

   DTC C1A4A is not output.

   NOTE:

   When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization (See page. Refer to INITIALIZATION [09/2014 - 10/2015] ). If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored.

Result:  OK

OK 

END (BRAKE ACTUATOR ASSEMBLY WAS DEFECTIVE) 

Result:  NG

NG 

REPLACE DRIVING SUPPORT ECU 

(See page. Refer to REMOVAL [09/2014 - 10/2015] )