DTC C1AA1: FCM Destination Information Unmatched [11/2017 - 01/2023]: Procedure

HINT: 

When DTC C1AA1 is stored, lane departure alert system (w/ Steering Control) DTC C1AAC may be stored at the same time.

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > LKA/LDA > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AAC is not output	A
   DTC C1AAC is output	B

Result: 

B 

GO TO DTC CHART (C1AAC). Refer to  DTC C1AAC: Vehicle Information Unmatched [11/2017 - 01/2023] 

Result: 

A 

See step  2

HINT: 

The forward recognition camera communicates with the main body ECU (multiplex network body ECU) via CAN communication. Confirm that the CAN communication system is functioning normally before proceeding.

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > Front Recognition Camera > Trouble Codes 

   Result

   Result	Proceed to
   DTC U0142 is not output	A
   DTC U0142 is output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 03/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2019 - 01/2023] 

Result: 

A 

See step  3

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > Front Recognition Camera > 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 [11/2017 - 01/2023]

   Chassis > Front Recognition Camera > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AA1 is not output	A
   DTC C1AA1 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 03/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2019 - 09/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 01/2023] 

Result: 

B 

See step  4

1. Replace the forward recognition camera.

   Refer to REMOVAL [11/2017 - 01/2023]

2. Perform forward recognition camera adjustment.

   Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [11/2017 - 01/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > Front Recognition Camera > 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 [11/2017 - 01/2023]

   Chassis > Front Recognition Camera > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AA1 is not output	A
   DTC C1AA1 is output	B

Result: 

A 

END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) 

Result: 

B 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  COMPONENTS [09/2014 - ]