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 driving into a strong light (i.e., sunlight)
- When the ICC sensor body window is dirty and the measurement of the distance between the vehicles becomes difficult
- When ABS warning lamp is ON
- When the SNOW mode switch is turned ON
- When the 4WD shift switch is not AUTO position




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-III.
Is it displayed?
Not displayed-GO TO 2.
"OPE SW VOLT CIRC"- DCA.
"VHCL SPD UNMATCH"- DCA.
"IGN LOW VOLT"- DCA.
"CAN COMM ERROR"- DCA.
"ICC SENSOR CAN COMM ERR"- DCA.
"ABS/TCS/VDC CIRC"- DCA.
"APA HI TEMP"- C1F03.
"ECD CIRCUIT"- C1A26.
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". Testing and Inspection.
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"
- "DYNA ASSIST SW"
Is there a malfunctioning item?
All items are normal-GO TO 5.
"VHCL SPEED SE"- DCA.
"BRAKE SW"- DCA.
"DYNA ASSIST SW"- DCA.
5.REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. ADAS Control Unit.
- GO TO 6.
6.CHECK DCA SYSTEM
1. Erase "self-diagnosis result", and then perform "All DTC Reading" again after performing the action test.
( DCA for action test.)
2. Check that the DCA system is normal.
- INSPECTION END