DTC C1A46: Yaw Rate Sensor [09/2016 - 07/2020]: Procedure

HINT: 

Pre-collision system DTC C1A46 may be stored due to a malfunction in the electronically controlled brake system. Therefore, it is necessary to check for and troubleshoot electronically controlled brake system DTCs first.

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - ]

   Chassis > ABS/VSC/TRAC > Trouble Codes 

   Result

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

Result: 

B 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2016 - ] 

Result: 

A 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - 07/2020]

   Body Electrical > Pre-Collision 2 > Clear DTCs 

2. Perform the following procedure.

   HINT: 

   If the following procedure is not performed, the previously output DTC cannot be detected.

   1. Drive the vehicle at a speed of 5 km/h (4 mph) or more for 10 seconds or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - 07/2020]

   Body Electrical > Pre-Collision 2 > Trouble Codes 

   Result

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

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2016 - 05/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2019 - 07/2020] 

Result: 

B 

See step  3

1. Replace the driving support ECU assembly.

   Refer to REMOVAL [09/2016 - 07/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - 07/2020]

   Body Electrical > Pre-Collision 2 > Clear DTCs 

2. Perform the following procedure.

   HINT: 

   If the following procedure is not performed, the previously output DTC cannot be detected.

   1. Drive the vehicle at a speed of 5 km/h (4 mph) or more for 10 seconds or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - 07/2020]

   Body Electrical > Pre-Collision 2 > Trouble Codes 

   Result

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

Result: 

A 

END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE) 

Result: 

B 

See step  5

1. Replace the yaw rate sensor (airbag sensor assembly).

   Refer to REMOVAL [09/2016 - 01/2018] , or refer to REMOVAL [01/2018 - 05/2019] , or refer to REMOVAL [05/2019 - 07/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - 07/2020]

   Body Electrical > Pre-Collision 2 > Clear DTCs 

2. Perform the following procedure.

   HINT: 

   If the following procedure is not performed, the previously output DTC cannot be detected.

   1. Drive the vehicle at a speed of 5 km/h (4 mph) or more for 10 seconds or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - 07/2020]

   Body Electrical > Pre-Collision 2 > Trouble Codes 

   Result

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

Result: 

A 

END (YAW RATE SENSOR WAS DEFECTIVE) 

Result: 

B 

REPLACE SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY). Refer to  COMPONENTS [09/2016 - ]