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WT-36 < COMPONENT DIAGNOSIS > POWER SUPPLY AND GROUND CIRCUIT Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2. CHECK FUSE Check 10A fuses [Nos. 3, 6 and 19, located in the fuse block (J/B)]. Refer to PG-91, "Fuse, Connector and Ter- . Is the inspection result normal? YES >> Check harness for open circuit. Repair or replace if necessary. NO >> Check harness for short circuit and replace fuse. 3. CHECK GROUND CIRCUIT FOR UNIFIED METER AND A/C AMP. 1. Turn ignition switch OFF. 2. Check continuity between unified meter and A/C amp. harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> Repair harness or connector. 4. CHECK PRESET SWITCH Check preset switch. Refer to (BASE AUDIO WITHOUT NAVIGATION), (BOSE AUDIO WITHOUT NAVIGATION) or (BOSE AUDIO WITH NAVIGATION). YES >> Replace unified meter and A/C amp. NO >> Repair or replace malfunctioning part(s). (+) ( − ) Voltage Unified meter and A/C amp. — Ignition switch position Connector Terminal OFF ACC ON M67 41 Ground Approx. 0 V Battery voltage Battery voltage 53 Approx. 0 V Approx. 0 V Battery voltage 54 Battery voltage Battery voltage Battery voltage Unified meter and A/C amp. — Continuity Connector Terminal M67 55 Ground Existed 71 |