Distance Control Assist System

U0129 BCU CAN 2

Description

The brake booster control unit transmits the signal related to brake control to ICC sensor integrated unit via
ITS communication.


DTC Logic


DTC DETECTION LOGIC






NOTE:
If DTC "U0129" is detected along with DTC "U1000", first diagnose the DTC "U1000". Distance Control Assist System.

DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Start the engine.
2.Turn the DCA system ON.
3.Perform "All DTC Reading" with CONSULT.
4.Check if the "U0129" is detected as the current malfunction in self-diagnosis results of "ICC/ADAS".
Is "U0129" detected as the current malfunction?
YES- .
NO- Intermittent Incident.


Diagnosis Procedure


1. CHECK SELF-DIAGNOSIS RESULTS

Check if "U1000" is detected other than "U0129" in "Self Diagnostic Result" of "ICC/ADAS".
Is "U1000" detected?
YES- Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
Distance Control Assist System.
NO- GO TO 2.

2. REPLACE BRAKE BOOSTER CONTROL UNIT

1.Turn ignition switch OFF.
2.Replace brake booster control unit.
3.Erases All self-diagnosis results.
4.Perform DTC confirmation procedure. .
5.Perform "All DTC Reading".
6.Check if the "U0129" is detected in "Self Diagnostic Result" of "ICC/ADAS".
Is "U0129" detected?
YES- Replace the ICC sensor integrated unit. Distance Control Assist System.
NO- INSPECTION END


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

SPECIAL REPAIR REQUIREMENT


1. LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Description.
- GO TO 2.

2. 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