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 speed is not in range of approximately 40 km/h (25 MPH) to 144 km/h (90 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.
(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.


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" C1A06.
"VHCL SPD UNMATCH"-Refer to "DTC Logic" C1A03.
"IGN LOW VOLT"-Refer to "DTC Logic" C1A01.
"ECM CIRCUIT"-Refer to "DTC Logic" C1A14.
"CAN COMM ERROR"-Refer to "DTC Logic" Cruise Control.
"ABS/TCS/VDC CIRC"-Refer to "DTC Logic" C1A04.
"ECD CIRCUIT"-Refer to "DTC Logic" 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". 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"
Is there a malfunctioning item?
All items are normal-GO TO 5.
"VHCL SPEED SE"-Refer to "DTC Logic" C1A03.
"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" C1A06.
"BRAKE SW"-Refer to "DTC Logic" C1A05.
"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 "WITH RAIN SENSOR : Symptom Table" With Rain Sensor Symptom Table.

5. REPLACE ICC SENSOR INTEGRATED UNIT

1.Replace the ICC sensor integrated unit. Refer to "Exploded View" Exploded View.
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