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POWER SUPPLY AND GROUND CIRCUIT WT-39 < DTC/CIRCUIT DIAGNOSIS > C D F G H I J K L M A B WT N O P POWER SUPPLY AND GROUND CIRCUIT Description INFOID:0000000005549639 Supply power to the low tire pressure warning control unit. Component Function Check INFOID:0000000005549640 1. CHECK THE ILLUMINATION OF THE TIRE PRESSURE WARNING LAMP Check that the low tire pressure warning lamp is turned OFF after illuminating for approximately 1 second, YES >> INSPECTION END NO >> Perform trouble diagnosis. Refer to Diagnosis Procedure INFOID:0000000005549641 1. CHECK FUSE/FUSIBLE LINK Check for fusing of the fuse and fusible link at the low tire pressure warning control unit. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. POWER SUPPLY SYSTEM CHECK 1. Turn the ignition switch OFF. 2. Disconnect the low tire pressure warning control unit harness connector. 3. Turn the ignition switch ON. CAUTION: Never start engine. 4. Check the continuity between the low tire pressure warning control unit harness connector and the Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace error-detected parts. 3. GROUND SYSTEM INSPECTION 1. Turn the ignition switch OFF. 2. Check the continuity between the low tire pressure warning control unit harness connector and the Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. 4. CHECK TIRE PRESSURE RECEIVER POWER SUPPLY CIRCUIT 1. Connect the low tire pressure warning control unit harness connector. 2. Disconnect the tire pressure receiver harness connector. 3. Check the voltage between the tire pressure receiver harness connector and ground. Low tire pressure warning control unit — Voltage Connector Terminal M96 15 Ground Battery voltage Low tire pressure warning control unit — Continuity Connector Terminal M96 32 Ground Existed |