Distance Control Assist System

C1A10 RELEASE SWITCH

Description

- The release switch is integrated with the brake booster.
- The release switch detects that the driver depresses the brake pedal, and it outputs the signal to the brake booster control unit.
- The brake booster control unit transmits the release switch signal [release switch NO signal (normal open), release switch NC signal (normal close)] to the ICC sensor integrated unit via ITS communication.


DTC logic


DTC DETECTION LOGIC






NOTE:
If DTC "C1A10" is detected along with DTC "U1000", first diagnose the DTC "U1000". Distance Control Assist System.

DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE (1)

1.Start the engine.
2.Turn the DCA system ON, and wait for 5 minutes or more.
3.Perform "All DTC Reading" with CONSULT.
4.Check if the "C1A10" is detected as the current malfunction in self-diagnosis results of "ICC/ADAS".
Is "C1A10" detected as the current malfunction?
YES- .
NO- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE (2)

1.Depress the brake pedal strongly 10 times or more.
2.Perform "All DTC Reading".
3.Check if the "C1A10" is detected as the current malfunction in self-diagnosis results of "ICC/ADAS".
Is "C1A10" detected as the current malfunction?
YES- .
NO- Intermittent Incident.


Diagnosis Procedure


1. CHECK SELF-DIAGNOSIS RESULTS

Check if "U1000" is detected other than "C1A10" 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. CHECK HARNESS BETWEEN BRAKE BOOSTER (RELEASE SWITCH) AND BRAKE BOOSTER CONTROL UNIT

1.Turn the ignition switch OFF.
2.Disconnect connectors of brake booster and brake booster control unit.
3.Check for continuity between the brake booster control unit harness connector and brake booster harness connector.





4.Check for continuity between brake booster control unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair the harnesses or connectors.

3. CHECK RELEASE SWITCH POWER SUPPLY CIRCUIT

1.Connect the brake booster control unit connector.
2.Turn the ignition switch ON.
3.Check voltage between brake booster control unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Replace the brake booster control unit.

4. CHECK RELEASE SWITCH

Check the release switch. .
Is the inspection result normal?
YES- Replace the brake booster control unit.
NO- Replace the brake booster.


Component Inspection


1. CHECK BRAKE BOOSTER (RELEASE SWITCH)






Check for continuity between brake booster (release switch) terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace the brake booster.


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