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SEC-70 < COMPONENT DIAGNOSIS > [COUPE] B2555 STOP LAMP B2555 STOP LAMP Description INFOID:0000000004206029 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 INFOID:0000000004206030 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. YES >> Refer to . NO >> Inspection End. Diagnosis Procedure INFOID:0000000004206031 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. DTC No. Trouble diagno- sis name DTC detecting condition Possible cause B2555 STOP LAMP BCM makes a comparison between the • Harness or connectors (stop lamp switch circuit is open or shorted) • Stop lamp switch BCM Ground Stop lamp switch position Voltage [V] Connector Terminal M18 26 Ground Depressed Battery volt- age Released 0 ALKIA0437ZZ Stop lamp switch Ground Voltage [V] Connector Terminal E38 1 Ground Battery voltage ALKIA0438ZZ |