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DAS-78 < DTC/CIRCUIT DIAGNOSIS > [BSW] BSW SWITCH CIRCUIT BSW SWITCH CIRCUIT Component Function Check INFOID:0000000009940768 1. CHECK BSW SWITCH INPUT SIGNAL 1. Turn the ignition switch ON. 2. Select the DATA MONITOR item “WARN SYS SW” of “BSW” with CONSULT. 3. With operating the BSW switch, check the monitor status. Is the inspection result normal? YES >> BSW switch circuit is normal. NO >> Refer to . Diagnosis Procedure INFOID:0000000009940769 1. CHECK BSW SWITCH SIGNAL INPUT 1. Turn the ignition switch ON. 2. With operating the BSW switch, check voltage between BSW control module harness connector and Is the inspection result normal? YES >> Replace the BSW control module. Refer to DAS-84, "Removal and Installation" . NO >> GO TO 2. 2. CHECK BSW SWITCH 1. Turn ignition switch OFF. 2. Remove BSW switch. 3. Check BSW switch. Refer to DAS-88, "Removal and Installation" . Is the inspection result normal? YES >> GO TO 3. NO >> Replace the BSW switch. Refer to DAS-88, "Removal and Installation" 3. CHECK BSW SWITCH GROUND CIRCUIT Check continuity between BSW switch harness connector and the ground. Is the inspection result normal? YES >> GO TO 4. NO >> Repair harness or connector. 4. CHECK BSW SWITCH SIGNAL INPUT CIRCUIT FOR OPEN 1. Disconnect the BSW control module connector. Monitor item Condition Monitor status WARN SYS BSW switch is pressed On BSW switch is not pressed OFF Terminals Condition Voltage (Approx.) (+) ( − ) BSW control module Ground BSW switch Connector Terminal M61 1 Pressed 0 V Released 12 V BSW switch Ground Continuity Connector Terminal M60 2 Existed |