Dtc C1A02 Vehicle Information Not Obtained

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

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTCs (RADAR CRUISE2)

DTC C1A02 Vehicle Information Not Obtained


DESCRIPTION

When a new driving support ECU assembly is installed, it receives vehicle specification information (destination, steering wheel position, 2WD or 4WD information, etc.) from the main body ECU (multiplex network body ECU) and stores the information. DTC C1A02 is stored when the driving support ECU assembly receives the vehicle specification information from the main body ECU (multiplex network body ECU) but cannot store it.

DTC No.
DTC Detection Condition
Trouble Area
C1A02
While the engine switch is on (IG) and the dynamic radar cruise control system is operating, the driving support ECU assembly cannot stored the vehicle specification information for approximately 2 seconds or more.
Driving support ECU assembly

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
  2. First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting (Click here).
1.CHECK FOR DTCs (RADAR CRUISE2)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Clear the DTCs (Click here).

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

    HINT:
    If the detection conditions are not met, the system cannot detect the malfunction.
    1. Turn the engine switch on (IG).
    2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF).
    3. Wait for 2 seconds or more.

  1. Enter the following menus: Powertrain / Radar Cruise2 / Trouble Codes.

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC C1A02 is output
    		A
    DTC C1A02 is not output
    		B


B
USE SIMULATION METHOD TO CHECK (Click here)
A

REPLACE DRIVING SUPPORT ECU ASSEMBLY (Click here)