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DLK-30 < DTC/CIRCUIT DIAGNOSIS > DOOR SWITCH Without CONSULT Check voltage between BCM connector M18 or M19 terminals 12, 13, 47, 48 and ground. Is the inspection result normal? YES >> Door switch circuit is OK. NO >> GO TO 2 2. CHECK BCM OUTPUT VOLTAGE 1. Turn ignition switch OFF. 2. Disconnect door switches. 3. Check voltage between BCM connector M18, M19 terminals 12, 13, 47, 48 and ground. Is the inspection result normal? YES >> GO TO 3 NO BCS-49, "Removal and Installa- . 3. CHECK DOOR SWITCH CIRCUIT 1. Disconnect door switch and BCM. 2. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 and BCM connector M18, M19 terminals 12, 13, 47 and 48. 3. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 and ground. Is the inspection result normal? YES >> GO TO 4 NO >> Repair or replace harness. 4. CHECK DOOR SWITCHES 1. Disconnect door switch. 2. Check continuity between door switch terminals. Connec- tor Item Terminals Condition Voltage (V) (Approx.) (+) (–) M19 Front door switch LH 47 Ground Open ↓ Closed 0 Battery voltage Rear door switch LH 48 M18 Front door switch RH 12 Rear door 13 LIIA1177E 12 - Ground : Battery voltage 13 - Ground : Battery voltage 47 - Ground : Battery voltage 48 - Ground : Battery voltage LIIA1177E 2 - 47 : Continuity should exist. 2 - 12 : Continuity should exist. 2 - 48 : Continuity should exist. 2 - 13 : Continuity should exist. 2 - Ground : Continuity should not exist. LIIA1178E |