DTC C1A71: Power Steering Control Torque [10/2016 - 09/2020]: Procedure

HINT: 

Lane departure alert system DTC C1A71 may be stored due to a malfunction in the power steering system. Therefore it is necessary to check for and troubleshoot power steering system DTCs first.

1. Check for DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2016 - 09/2020]

   Chassis > EMPS > Trouble Codes 

   Result

   Result	Proceed to
   Power steering system DTCs are not output	A
   Power steering system DTCs are output	B

Result: 

B 

GO TO POWER STEERING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] 

Result: 

A 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2016 - 09/2020]

   Chassis > LKA/LDA > Clear DTCs 

2. Perform the following procedure.

   HINT: 

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

   1. Turn the engine switch on (IG) and wait 7 seconds or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2016 - 09/2020]

   Chassis > LKA/LDA > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1A71 is not output	A
   DTC C1A71 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2016 - 10/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2020] 

Result: 

B 

See step  3

1. Replace the forward recognition camera.

   Refer to REMOVAL [10/2016 - 09/2020]

2. Perform forward recognition camera adjustment.

   Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [10/2016 - 09/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2016 - 09/2020]

   Chassis > LKA/LDA > Clear DTCs 

2. Perform the following procedure.

   HINT: 

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

   1. Turn the engine switch on (IG) and wait 7 seconds or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2016 - 09/2020]

   Chassis > LKA/LDA > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1A71 is not output	A
   DTC C1A71 is output	B

Result: 

A 

END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) 

Result: 

B 

REPLACE POWER STEERING ECU ASSEMBLY. Refer to  COMPONENTS [04/2013 - 09/2020]