DTC C1A46: Yaw Rate Sensor [07/2015 - ]: Procedure

CHECK DTC OUTPUT (VSC SYSTEM)

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

Check for vehicle stability control system DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).

RESULT

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

HINT:

If the airbag sensor assembly (yaw rate and acceleration sensor) is malfunctioning, DTCs for the vehicle stability control system will be stored. Troubleshoot the vehicle stability control system first.

Result: B

GO TO VEHICLE STABILITY CONTROL SYSTEM

(Refer to DIAGNOSTIC TROUBLE CODE CHART [07/2015 - ] )

Result: A

See step 2

CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
Clear the DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).
Drive the vehicle at a speed of 5 km/h (3 mph) or more.
HINT:

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

Check for DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).

RESULT

Result	Proceed to
DTC C1A46 is output	A
DTC C1A46 is not output	B

Result: B

USE SIMULATION METHOD TO CHECK (SYMPTOM SIMULATION)

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] )

Result: A

See step 3

REPLACE DRIVING SUPPORT ECU ASSEMBLY
1. Replace the driving support ECU assembly (Refer to REMOVAL [07/2015 - ] ).
Result: NEXT

NEXT

See step 4

CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
Clear the DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).
Drive the vehicle at a speed of 5 km/h (3 mph) or more.
HINT:

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

Check for DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).

RESULT

Result	Proceed to
DTC C1A46 is output	A
DTC C1A46 is not output	B

Result: B

END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE)

Result: A

See step 5

REPLACE AIRBAG SENSOR ASSEMBLY (YAW RATE AND ACCELERATION SENSOR)
1. Replace the airbag sensor assembly (yaw rate and acceleration sensor) (Refer to COMPONENTS [07/2015 - ] ).
Result: NEXT

NEXT

See step 6

CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
Clear the DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).
Drive the vehicle at a speed of 5 km/h (3 mph) or more.
HINT:

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

Check for DTCs (Refer to DTC CHECK / CLEAR [07/2015 - ] ).

RESULT

Result	Proceed to
DTC C1A46 is output	A
DTC C1A46 is not output	B

Result: A

REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

(Refer to COMPONENTS [07/2015 - ] )

Result: B

END (AIRBAG SENSOR ASSEMBLY WAS DEFECTIVE)