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DTC    C1A01    Driving Support ECU

for Preparation Click here


DESCRIPTION

This DTC indicates the internal abnormalities of the driving support ECU.

DTC Code
DTC Detection Condition
Trouble Area
C1A01
While power switch is on (IG) and dynamic radar cruise control system is operating, driving support ECU detects an internal malfunction for 1 sec.
Driving support ECU

INSPECTION PROCEDURE

1.READ OUTPUT DTC

  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 40 km/h (25 mph) or more.

    2. Turn the cruise control main switch 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 C1A01 is output
    		B



B
REPLACE DRIVING SUPPORT ECU (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)