DTC    C1A02    Vehicle Information Not Obtained

for Preparation Click here


DESCRIPTION

When the driving support ECU is replaced with a new one, it acquires the country specification information (destination, steering wheel position, etc.) from the main body ECU. When the country specification information in the driving support ECU assembly and main body ECU do not match, DTC C1A02 is output.

DTC No.
DTC Detection Condition
Trouble Area
C1A02
While power switch is on (IG) and dynamic radar cruise control system is operating, driving support ECU assembly does not receive vehicle destination information
  1. Driving support ECU assembly
  2. CAN communication system

INSPECTION PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

  1. Select the "CAN Bus Check" from the "System Selection Menu" screen on the intelligent tester.

  1. Select "Communication Malfunction DTC" from the "CAN Bus Check" screen, and then select "Enter".

OK:
CAN communication system DTC is not output.



NG
GO TO CAN COMMUNICATION SYSTEM (Click here)
OK


2.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Clear the DTCs (Click here).

  1. Perform the following to make sure that the DTC detection conditions are met.

    HINT:
    If the detection conditions are not met, the malfunction cannot be detected.

    1. Drive the vehicle at a speed of 50 km/h (30 mph) and 170 km/h (105 mph).

    2. Turn the cruise control switch (ON-OFF button) on.

    3. Push the -/SET switch to activate the cruise control.

  1. Enter the following menus: Powertrain / Radar Cruise / DTC.

  1. Read the DTCs.

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



B
REPLACE DRIVING SUPPORT ECU ASSEMBLY (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)