ICC System Cannot Be Set (Main Switch Turns On/Off)

ICC SYSTEM CANNOT BE SET (MAIN SWITCH TURNS ON/OFF)





Description
The MAIN switch can be turned ON/OFF, but the ICC system cannot be set even if the SET/COAST switch is pressed.

NOTE:
The system cannot be set in the following case.
- When the vehicle ahead is not detected below the speed of 32 km/h (20 MPH).
- When the selector lever is not in the "D" position or manual mode.
- When the front wipers are operating at HI.
(If the vehicle is equipped with a rain sensing auto-wiper, the system may cancel when the wipers are set to AUTO)
- When the brake pedal is depressed.
- When driving into a strong light (i.e., sunlight).
- When the VDC is turned OFF.
- When ABS or VDC (including the TCS) operates.
- When a wheel slips.
- When ABS warning lamp is ON.
- When drive mode select switch is in SNOW position.




Diagnosis Procedure
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
Check if there is the 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"- Operation Switch.
"VHCL SPD UNMATCH"- C1A03.
"IGN LOW VOLT"- C1A01.
"ECM CIRCUIT"- C1A14.
"CAN COMM ERROR"- U0235.
"ICC SENSOR CAN COMM ERR"- U0235.
"ABS/TCS/VDC CIRC"- C1A04.
"ECD CIRCUIT"- C1A26.
2.PERFORM THE SELF-DIAGNOSIS
1. Perform "All DTC Reading".
2. Check if any DTC is detected in "Self Diagnostic Result" of "ICC/ADAS" or "LASER". Testing and Inspection, Testing and Inspection (LASER).
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"
- "D RANGE SW"
- "SET/COAST SW"
- "BRAKE SW"
- "WIPER SW"
- "PKB SW"
Is there a malfunctioning item?
All items are normal-GO TO 5.
"VHCL SPEED SE"- C1A03.
"D RANGE SW"- ICC System Does Not Cancel When A/T Selector Lever Sets On "N".
"SET/COAST SW"- Operation Switch.
"BRAKE SW"- Brake Switch/Stop Lamp Switch.
"WIPER SW" (When the front wiper operation is normal)-GO TO 5.
"WIPER SW" (When the front wiper operation is malfunctioning)-Performs the diagnosis of the front wiper. Symptom Table.
"PKB SW"- Parking Brake Switch Signal Circuit.
5.REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Service and Repair.
- GO TO 6.
6.CHECK ICC SYSTEM
1. Erase the self-diagnosis results, and then perform "All DTC Reading" again after performing the action test. ( Description for action test.)
2. Check that the ICC system is normal.
- INSPECTION END