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. (A/T models)
- When the shift knob is set at the neutral position. (M/T models)
- When the front wipers are operating at LO or HI.
- When the brake pedal is depressed.
- When the clutch pedal is depressed. (M/T models)
- 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.



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


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" with CONSULT-III.
Is it displayed?
Not displayed - GO TO 2.
"OPE SW VOLT CIRC" - Refer to C1A06.
"VHCL SPD UNMATCH" - Refer to C1A03.
"IGN LOW VOLT" - Refer to C1A01.
"ECM CIRCUIT" - Refer to C1A14.
"CAN COMM ERROR" - Refer to Can Comm Circuit.
"ABS/TCS/VDC CIRC" - Refer to C1A04.
"ECD CIRCUIT" - Refer to C1A26.
2.PERFORM THE SELF-DIAGNOSIS
1. Perform "All DTC Reading".
2. Check if any DTC is detected in "Self Diagnostic Result" of "ICC". Refer to 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".
- "VHCL SPEED SE"
- "D RANGE SW"
- "SET/COAST SW"
- "BRAKE SW"
- "NP SW SIG"
- "CLUTCH SW SIG"
- "WIPER SW"
Is there a malfunctioning item?
All items are normal - GO TO 5.
"VHCL SPEED SE" - Refer to C1A03.
"D RANGE SW" - Refer to ICC System Does Not Cancel When A/T Selector Lever Sets On "N".
"SET/COAST SW" - Refer to C1A06.
"BRAKE SW" - Refer to C1A05.
"CLUTCH SW SIG" - Refer to C1A05.
"NP SW SIG" - Refer to Component Inspection.
"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 Front Wiper And Washer System Symptoms.
5.REPLACE ICC SENSOR INTEGRATED UNIT
1. Replace the ICC sensor integrated unit. Refer to Exploded View.
2. Perform the laser beam aiming. Refer to 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 LDW and LDP for action test.)
2. Check that the ICC system is normal.
- INSPECTION END