DTC C1AAA: FCM Destination Information Uninitialized [10/2015 - ]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Avalon, 2017 Toyota Avalon, and 2016 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTCs (CAN COMMUNICATION DTC OUTPUT)

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.

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

Check for DTCs.

Refer to DTC CHECK / CLEAR [10/2015 - ]

Result

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

Result:

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ]

Result:

See step 2

CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Chassis / LKA/LDA / Trouble Codes.
Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - ]
Perform the following procedure.
HINT:

If the following procedure is not performed, the previously output DTC cannot be detected.
1. Turn the power switch on (IG) and wait 2 seconds or more.

Check for DTCs.

Refer to DTC CHECK / CLEAR [10/2015 - ]

Result

Result	Proceed to
DTC C1AAA is not output	A
DTC C1AAA is output	B

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ]

Result:

See step 3

REPLACE FORWARD RECOGNITION CAMERA
1. Replace the forward recognition camera.
  Refer to REMOVAL [10/2015 - ]
2. Perform Forward Recognition Camera Learning.
  Refer to ADJUSTMENT [10/2015 - ]
Result:

NEXT

See step 4

CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Chassis / LKA/LDA / Trouble Codes.
Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - ]
Perform the following procedure.
HINT:

If the following procedure is not performed, the previously output DTC cannot be detected.
1. Turn the power switch on (IG) and wait 2 seconds or more.

Check for DTCs.

Refer to DTC CHECK / CLEAR [10/2015 - ]

Result

Result	Proceed to
DTC C1AAA is not output	A
DTC C1AAA is output	B

Result:

END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)

Result:

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to COMPONENTS [10/2014 - ]