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HAC-78 < DTC/CIRCUIT DIAGNOSIS > [WITHOUT 7 INCH DISPLAY] 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)]. PG-91, "Fuse, Connector and Terminal Arrangement" . Is the inspection result normal? YES >> Repair the harnesses or connectors. NO >> Replace the fuse after repairing the applicable circuit. 3. CHECK A/C AUTO AMP. CIRCUIT CONTINUITY 1. Turn ignition switch OFF. 2. Check continuity between A/C auto amp. harness connector and ground. Is the inspection result normal? YES >> Replace the A/C auto amp. NO >> Repair the harnesses or connectors. A/C CONTROL A/C CONTROL : Diagnosis Procedure INFOID:0000000009722099 1. CHECK A/C CONTROL POWER SUPPLY CIRCUIT 1. Disconnect the A/C control connector. 2. Turn ignition switch ON. 3. Check voltage between A/C control harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair the harnesses or connectors. 2. CHECK A/C CONTROL CIRCUIT CONTINUITY 1. Turn ignition switch OFF. 2. Check continuity between A/C control harness connector and ground. (+) ( − ) Voltage A/C auto amp. — Ignition switch position Connector Terminal OFF ACC ON M50 17 Ground Approx. 0 V Battery voltage Battery voltage 20 Approx. 0 V Approx. 0 V Battery voltage 40 Battery voltage Battery voltage Battery voltage A/C auto amp. — Continuity Connector Terminal M50 19 Ground Existed 39 (+) ( − ) Voltage A/C control — Connector Terminal M95 1 Ground Battery voltage |