DTC C1A71: Power Steering Control Torque [09/2017 - 05/2019]: Procedure

HINT: 

Lane departure alert system (w/ steering control) 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 [09/2017 - 05/2019]

   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 

for Manual Tilt and Manual Telescopic Steering Column: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2017 - ]

for Power Tilt and Power Telescopic Steering Column: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2017 - ]

Result: 

A 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2017 - 05/2019]

   Chassis > LKA/LDA > Clear DTCs 

2. Perform the following procedure.

   HINT: 

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

3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2017 - 05/2019]

   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 [09/2017 - 05/2019] 

Result: 

B 

See step  3

1. Replace the forward recognition camera.

   Refer to REMOVAL [09/2017 - 05/2019]

2. Perform forward recognition camera adjustment.

   Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [09/2017 - 05/2019]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2017 - 05/2019]

   Chassis > LKA/LDA > Clear DTCs 

2. Perform the following procedure.

   HINT: 

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

3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2017 - 05/2019]

   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 

• for Manual Tilt and Manual Telescopic Steering Column: Refer to REMOVAL [10/2014 - ]
• for Power Tilt and Power Telescopic Steering Column: Refer to REMOVAL [10/2014 - ]