Distance Control Assist System

U1000 CAN COMM CIRCUIT

ICC SENSOR INTEGRATED UNIT : Description


CAN COMMUNICATION

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control units, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. CAN Communication Signal Chart.

ITS COMMUNICATION

- ITS communication is a multiplex communication system. This enables the system to transmit and receive large quantities of data at high speed by connecting ICC sensor integrated unit, brake booster control unit, and accelerator pedal actuator with 2 communication lines.
- ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.


ICC SENSOR INTEGRATED UNIT : DTC Logic


DTC DETECTION LOGIC






NOTE:
If "U1000" is detected, first diagnose the CAN communication system.


ICC SENSOR INTEGRATED UNIT : Diagnosis Procedure


1. PERFORM THE SELF-DIAGNOSIS

1.Turn the ignition switch ON.
2.Turn the DCA system ON, and wait for 30 seconds or more.
3.Perform "All DTC Reading" with CONSULT.
4.Check if the "U1000" is detected as the current malfunction in self-diagnosis results of "ICC/ADAS".
Is "U1000" detected as the current malfunction?
YES- Trouble Diagnosis Flow Chart.
NO- Intermittent Incident.


ICC SENSOR INTEGRATED UNIT : Special Repair Requirement


DESCRIPTION

Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following operation is performed.
- Removal and installation of ICC sensor integrated unit
- Replacement of ICC sensor integrated unit
Check the operation after performing the accelerator pedal released position learning when the following operation is performed.
- Disconnection and connection of accelerator pedal position sensor connector
- Replace accelerator pedal assembly

SPECIAL REPAIR REQUIREMENT


1. CHECK CONTROL UNIT REPLACED, REMOVED AND/OR INSTALLED

Perform the adjustment work after the replacement or removal and installation of ICC sensor integrated unit, replacement of accelerator pedal assembly, or disconnection or connection of accelerator pedal position sensor connector.
Which is replaced, removed or installed?
ICC sensor integrated unit-GO TO 2.
Accelerator pedal assembly-GO TO 3.

2. LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Description.
- GO TO 4.

3. ACCELERATOR PEDAL RELEASED POSITION LEARNING

Perform the Accelerator Pedal Released Position Learning. Description.
- GO TO 4.

4. CHECK DCA SYSTEM

1.Erase the self-diagnosis results, and then perform "All DTC Reading" again after performing the action test. (Description (Distance Control Assist) for action test.)
2.Check that the DCA system is normal.
- WORK END


ACCELERATOR PEDAL ACTUATOR : Description

- ITS communication is a multiplex communication system. This enables the system to transmit and receive large quantities of data at high speed by connecting ICC sensor integrated unit, brake booster control unit, and accelerator pedal actuator with 2 communication lines.
- ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

CAUTION:
ITS communication uses the twisted pair line. Be careful when repairing the wiring.


ACCELERATOR PEDAL ACTUATOR : DTC Logic


DTC DETECTION LOGIC








ACCELERATOR PEDAL ACTUATOR : Diagnosis Procedure


1. PERFORM THE SELF-DIAGNOSIS

1.Turn ignition switch ON.
2.Turn the DCA system ON, and wait for 2 seconds or more.
3.Perform "All DTC Reading" with CONSULT.
4.Check if the "U1000" is detected as the current malfunction in self-diagnosis results of "ACCELE PEDAL
ACT".
Is "U1000" detected as the current malfunction?
YES- Trouble Diagnosis Flow Chart.
NO- Intermittent Incident.


ACCELERATOR PEDAL ACTUATOR : Special Repair Requirement


DESCRIPTION

Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following operation is performed.
- Removal and installation of ICC sensor integrated unit
- Replacement of ICC sensor integrated unit
Check the operation after performing the accelerator pedal released position learning when the following operation is performed.
- Disconnection and connection of accelerator pedal position sensor connector
- Replace accelerator pedal assembly

SPECIAL REPAIR REQUIREMENT


1. CHECK CONTROL UNIT REPLACED, REMOVED AND/OR INSTALLED

Perform the adjustment work after the replacement or removal and installation of ICC sensor integrated unit, replacement of accelerator pedal assembly, or disconnection or connection of accelerator pedal position sensor connector.
Which is replaced, removed or installed?
ICC sensor integrated unit-GO TO 2.
Accelerator pedal assembly-GO TO 3.

2. LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Description.
- GO TO 4.

3. ACCELERATOR PEDAL RELEASED POSITION LEARNING

Perform the Accelerator Pedal Released Position Learning. Description.
- GO TO 4.

4. CHECK DCA SYSTEM

1.Erase the self-diagnosis results, and then perform "All DTC Reading" again after performing the action test. (Description (Distance Control Assist) for action test.)
2.Check that the DCA system is normal.
- WORK END