Security System Coupe

B2555 STOP LAMP





Description
BCM detects the stop lamp status and confirms the stop lamp switch ON/OFF status. BCM confirms the engine start condition according to the stop lamp switch ON/OFF status.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Depress the brake pedal and wait for at least 1 second.
2. Check "Self diagnostic result" with CONSULT-III.
Is DTC detected?
YES - Security System Coupe or .
NO - Inspection End.




Diagnosis Procedure (With CVT)
Regarding Wiring Diagram information, Intelligent Key System/Engine Start Function Coupe.
1.CHECK FUSE
1. Check 10A fuse [No.7, located in fuse block (J/B)].
Is the inspection result normal?
YES - GO TO 2.
NO - Replace the blown fuse after repairing the shorted circuit.
2.CHECK STOP LAMP SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector.
3. Check voltage between BCM harness connector M18 terminal 26 and ground.





Is the inspection result normal?
YES - Replace BCM. Service and Repair.
NO - GO TO 3.
3.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Check voltage between stop lamp harness connector E38 terminal 2 and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - GO TO 9 (stop lamp switch). If stop lamp switch is OK then check harness for open between stop lamp switch connector and fuse block J/B. Repair or replace necessary parts.
4.CHECK STOP LAMP RELAY-1 SIGNAL CIRCUIT
1. Check voltage between stop lamp relay-1 harness connector E57 terminal 1 and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Check harness for open or short between stop lamp relay-1 connector and stop lamp switch.
Repair or replace necessary parts.
5.CHECK STOP LAMP RELAY-1 POWER SUPPLY
1. Check voltage between stop lamp relay-1 harness connector E57 terminal 5 and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Check pin terminals and connection of stop lamp relay-1 harness connector and harness for abnormal conditions. Repair or replace necessary parts.
6. CHECK STOP LAMP RELAY-1 GROUND CIRCUIT
1. Check continuity between stop lamp relay-1 harness connector E57 terminal 2 and ground.





Is the inspection result normal?
YES - GO TO 7.
NO - Repair harness or connector.
7.CHECK STOP LAMP RELAY-1 OUTPUT CIRCUIT
1. Connect stop lamp relay-1.
2. Check voltage between stop lamp relay-1 harness connector E57 terminal 3 and ground.





Is the inspection result normal?
YES - GO TO 8.
NO - GO TO 10.
8.CHECK STOP LAMP SWITCH CIRCUIT
1. Check continuity between stop lamp relay-1 harness connector E57 terminal 3 and BCM harness connector M18 terminal 26.





2. Check continuity between stop lamp relay-1 harness connector E57 terminal 3 and ground.





Is the inspection result normal?
YES - GO TO 11.
NO - Repair harness or connector.
9.CHECK STOP LAMP SWITCH
Security System Coupe.
Is the inspection result normal?
YES - GO TO 11.
NO - Replace stop lamp switch.
10.CHECK STOP LAMP RELAY-1
Security System Coupe.
Is the inspection result normal?
YES - GO TO 11.
NO - Replace stop lamp relay-1.
11.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- Inspection End.




Diagnosis Procedure (With M/T)
Regarding Wiring Diagram information, Intelligent Key System/Engine Start Function Coupe.
1.CHECK STOP LAMP SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector.





3. Check voltage between BCM harness connector and ground.





Is the inspection result normal?
YES - Stop lamp switch is OK.
NO - GO TO 2
2.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
2. Check voltage between stop lamp harness connector and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Check harness for open or short between stop lamp switch and fuse.
3.CHECK STOP LAMP SWITCH CIRCUIT
1. Check continuity between stop lamp switch harness connector E52 terminal 2 and BCM harness connector M18 terminal 26.





2. Check continuity between stop lamp switch harness connector E52 terminal 2 and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair harness or connector.
4.CHECK STOP LAMP SWITCH
Security System Coupe.
Is the inspection result normal?
YES - GO TO 5
NO - Replace stop lamp switch.
5.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- Inspection End.




Component Inspection

STOP LAMP SWITCH
1.CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector E38.
3. Check continuity between stop lamp switch terminals 1 and 2 under the following conditions.





Is the inspection result normal?
YES - Inspection End.
NO - Replace stop lamp switch.

STOP LAMP RELAY-1
1. CHECK STOP LAMP RELAY-1





Check continuity between stop lamp relay-1 terminals 3 and 5.





Is the inspection result normal?
YES - Inspection End.
NO - Replace stop lamp relay-1.