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", "DS" position or manual mode.
- When the front wipers are operating at LO or HI.
- When the brake pedal is depressed.
- When driving into a strong light (i.e. sunlight).
- When the snow mode switch is turned ON.
- When the VDC is turned OFF.
- When ABS or VDC (including the TCS) operates.
- When a wheel slips.


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.
Is it displayed?
Not displayed-GO TO 2.
"OPE SW VOLT CIRC"-Refer to "DTC Logic" ICC (Full Speed Range).
"VHCL SPD UNMATCH"-Refer to "DTC Logic" ICC (Full Speed Range).
"IGN LOW VOLT"-Refer to "DTC Logic" ICC (Full Speed Range).
"ECM CIRCUIT"-Refer to "DTC Logic" ICC (Full Speed Range).
"CAN COMM ERROR"-Refer to "DTC Logic" Cruise Control.
"ABS/TCS/VDC CIRC"-Refer to "DTC Logic" ICC (Full Speed Range).
"BCU CIRCUIT"-Refer to "DTC Logic" ICC (Full Speed Range).

2. PERFORM THE SELF-DIAGNOSIS

1.Perform "All DTC Reading".
2.Check if any DTC is detected in "Self Diagnostic Result" of "ICC/ADAS". Refer to "DTC Index" 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"
-"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"-Refer to "DTC Logic" ICC (Full Speed Range).
"D RANGE SW"-Refer to "Diagnosis Procedure" ICC System Does Not Cancel When A/T Selector Lever Sets On "N".
"SET/COAST SW"-Refer to "DTC Logic" ICC (Full Speed Range).
"BRAKE SW"-Refer to "DTC Logic" ICC (Full Speed Range).
"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.
Refer to "Symptom Table" Symptom Table.
"PKB SW"-Refer to "Diagnosis Procedure" Parking Brake Switch Signal Circuit.

5. REPLACE ICC SENSOR INTEGRATED UNIT

1.Replace the ICC sensor integrated unit. Refer to "Exploded View" ICC (Full Speed Range).
2.Perform the laser beam aiming. Refer to "LASER BEAM AIMING ADJUSTMENT : Description" Description.
- 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. (Refer to "ACTION TEST : Description" Description for action test.)
2.Check that the ICC system is normal.
- INSPECTION END