DCA System Not Activated (Switch Is On)

DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)

Description

The dynamic driver assistance switch can be turned ON/OFF, but the DCA system does not operate.
NOTE:
Never start the operation under the following conditions.
No operation condition
- When the brake pedal depressed
- When the ICC system is set
- When the system judges that the vehicle comes to a standstill by the system control
- When the vehicle ahead is not detected
Operation cancellation condition
- When the dynamic driver assistance switch is turned to OFF
- When the system malfunction occurs
- When ABS or VDC (including the TCS) operates
- When the VDC is turned OFF
- When the snow mode switch is turned ON
- When driving into a strong light (i.e., sunlight)
- When the ICC sensor integrated unit body window is dirty and the measurement of the distance between the vehicles becomes difficult


Diagnosis Procedure


1. CHECK CAUSE OF AUTOMATIC CANCELLATION

Check if there is any cancellation cause in the "CAUSE OF AUTO-CANCEL" on "WORK SUPPORT" of "ICC/
ADAS" with CONSULT.
Is it displayed?
Not displayed-GO TO 2.
"VHCL SPD UNMATCH"-Distance Control Assist System.
"IGN LOW VOLT"-Distance Control Assist System.
"CAN COMM ERROR"-Distance Control Assist System.
"ABS/TCS/VDC CIRC"-Distance Control Assist System.
"BCU CIRCUIT"-C1A22.
"APA HI TEMP"-C1F03.

2. PERFORM ALL OF THE SELF-DIAGNOSIS

1.Perform "All DTC Reading".
2.Check if any DTC is detected in self-diagnosis results of "ICC/ADAS". A L L Diagnostic Trouble Codes ( DTC ).
Is any DTC detected?
YES- GO TO 3.
NO- GO TO 4.

3. REPAIR OR REPLACE MALFUNCTIONING PARTS

Repair or replace malfunctioning parts identified by the self-diagnosis result.
- GO TO 6.

4. CHECK EACH SWITCH AND VEHICLE SPEED SIGNAL

1.Start the engine.
2.Check that the following items operate normally in "DATA MONITOR" of "ICC/ADAS".
-"VHCL SPEED SE"
-"BRAKE SW"
-"DCA ON SW"
Is there a malfunctioning item?
All items are normal-GO TO 5.
"VHCL SPEED SE"-Distance Control Assist System.
"BRAKE SW"-Brake SW/STOP Lamp Sw.
"DCA ON SW"-C1A40.

5. REPLACE ICC SENSOR INTEGRATED UNIT

1.Replace the ICC sensor integrated unit. Distance Control Assist System.
2.Adjust the laser beam aiming. Description.
- GO TO 6.

6. CHECK DCA SYSTEM

1.Erase "self-diagnosis result", and then perform "All DTC Reading" again after performing the action test.
(Description (Distance Control Assist) for action test.)
2.Check that the DCA system is normal.
- INSPECTION END