Dtc C1Aa1 Fcm Destination Information Unmatched

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
Cruise Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC OUTPUT (CAN COMMUNICATION DTC OUTPUT)

CHECK DTC OUTPUT (FORWARD RECOGNITION CAMERA SYSTEM)

REPLACE FORWARD RECOGNITION CAMERA

CHECK DTC OUTPUT (FORWARD RECOGNITION CAMERA SYSTEM)

DTC C1AA1 FCM Destination Information Unmatched


DESCRIPTION

When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store country specification information received from the main body ECU (multiplex network body ECU). If the country specification information stored in the forward recognition camera is different from that stored in the main body ECU (multiplex network body ECU), DTC C1AA1 is stored.

DTC No.
DTC Detection Condition
Trouble Area
C1AA1
2 seconds after the engine switch is turned on (IG), destination information stored in the forward recognition camera and that received from the main body ECU (multiplex network body ECU) do not match for 5 seconds or more.
  1. CAN communication system
  2. Forward recognition camera
  3. Main body ECU (multiplex network body ECU)

INSPECTION PROCEDURE

NOTICE:
  1. Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).
  2. If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.
  3. When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
  4. IIf the forward recognition camera has been replaced with a new one, be sure to perform forward recognition camera learning (Click here).
HINT:
This DTC is stored when the country specification information stored in the forward recognition camera and that stored in the main body ECU (multiplex network body ECU) do not match. If the forward recognition camera or main body ECU (multiplex network body ECU) has been replaced, check if a forward recognition camera or main body ECU (multiplex network body ECU) from another vehicle was used.
1.CHECK DTC OUTPUT (CAN COMMUNICATION DTC OUTPUT)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.

  1. Check for DTCs (Click here).

Result
Result
Proceed to
DTC U0142 is not output
A
DTC U0142 is output (for LHD)
B
DTC U0142 is output (for RHD)
C


B
GO TO CAN COMMUNICATION SYSTEM (Click here)

C
GO TO CAN COMMUNICATION SYSTEM (Click here)
A


2.CHECK DTC OUTPUT (FORWARD RECOGNITION CAMERA SYSTEM)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.

  1. Clear the DTCs (Click here).

  1. Make sure that the DTC detection conditions are met.

    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.

  1. Check for DTCs (Click here).

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


B
USE SIMULATION METHOD TO CHECK (Click here)
A


3.REPLACE FORWARD RECOGNITION CAMERA

  1. Replace the forward recognition camera (Click here).

  1. Adjust the forward recognition camera (Click here).


NEXT


4.CHECK DTC OUTPUT (FORWARD RECOGNITION CAMERA SYSTEM)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.

  1. Clear the DTCs (Click here).

  1. Make sure that the DTC detection conditions are met.

    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.

  1. Check for DTCs (Click here).

Result
Result
Proceed to
DTC C1AA1 is output (for LHD)
A
DTC C1AA1 is output (for RHD)
B
DTC C1AA1 is not output
C


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)

C
END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)
A

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)