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WCS-48 < DTC/CIRCUIT DIAGNOSIS > KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY) KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY) Description INFOID:0000000010438790 Transmits a key switch signal to the BCM. Component Function Check INFOID:0000000010438791 1. CHECK BCM INPUT SIGNAL Select "Data Monitor" for "BCM" and check the "KEY ON SW" monitor value. Is the inspection result normal? YES >> Inspection End. NO >> Refer to Diagnosis Procedure INFOID:0000000010438792 Regarding Wiring Diagram information, refer to . 1. CHECK BCM INPUT SIGNAL Check voltage between BCM harness connector M19 terminal 81 and ground. Is the inspection result normal? YES >> Inspection End. NO >> GO TO 2. 2. CHECK KEY SWITCH CIRCUIT 1. Disconnect BCM connector M69 and key switch. 2. Check continuity between BCM harness connector M69 terminal 81 and key switch harness connector 3. Check continuity between BCM harness connector M69 terminal 81 and ground. Is the inspection result normal? YES >> GO TO 3. Monitor Item Condition Status KEY ON SW When key is removed from key cylinder OFF When key is inserted into key cylinder ON Terminals Condition Voltage (Approx.) (+) ( − ) BCM connector Terminal M69 81 Ground Key is inserted Battery voltage Key is removed 0V BCM Key switch Continuity Connector Terminal Connector Terminal M69 81 M47 1 Yes BCM Ground Continuity Connector Terminal M69 81 No |