B2555

B2555 STOP LAMP

DTC Logic


DTC DETECTION LOGIC

NOTE:
If DTC B2555 is displayed with DTC C1A68 (for BRAKE), first perform the trouble diagnosis for DTC C1A68.
C1A68.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Depress the brake pedal for 1 second or more.
2.Check DTC in "Self Diagnostic Result" mode of "BCM" using CONSULT.
Is DTC detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. INSPECTION START

Perform inspection in accordance with the vehicle type.
Which type of vehicle?
Models with ICC-GO TO 2.
Models without ICC-GO TO 3.

2. CHECK DTC OF ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT

1.Perform DTC CONFIRMATION PROCEDURE for C1A68. C1A68.
2.Check DTC in "Self Diagnostic Result" mode of "BRAKE" using CONSULT.
Is DTC C1A68 detected?
YES- Perform the trouble diagnosis for DTC C1A68. C1A68.
NO- GO TO 3.

3. CHECK STOP LAMP SWITCH INPUT SIGNAL 1

1.Turn ignition switch OFF.
2.Disconnect BCM connector.
3.Check voltage between BCM harness connector and ground.





Is the inspection normal?
YES- GO TO 4.
NO-1- Check 10 A fuse [No. 7, located in the fuse block (J/B)].
NO-2- Check harness for open or short between BCM and fuse.

4. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.Disconnect stop lamp switch connector.
2.Check voltage between stop lamp switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Check harness for open or short between stop lamp switch and fuse.

5. CHECK STOP LAMP SWITCH INPUT SIGNAL 2

1.Connect stop lamp switch connector.
2.Check voltage between BCM harness connector and ground.





Is the inspecting result normal?
YES- GO TO 6.
NO- GO TO 7.

6. REPLACE BCM

1.Replace BCM. Service and Repair.
2.Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
- INSPECTION END

7. CHECK STOP LAMP SWITCH CIRCUIT

1.Disconnect stop lamp switch connector.
2.Check continuity between stop lamp switch harness connector and BCM harness connector.





3.Check continuity between stop lamp switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace harness.

8. CHECK STOP LAMP SWITCH

.
Is the inspection result normal?
YES- GO TO 9.
NO- Replace stop lamp switch. Removal and Installation.

9. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
- INSPECTION END


Component Inspection


1. CHECK STOP LAMP SWITCH

1.Turn ignition switch OFF.
2.Disconnect stop lamp switch connector.
3.Check continuity between stop lamp switch terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace stop lamp switch. Removal and Installation.