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UNIFIED METER AND A/C AMP. HAC-69 < DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] C D E F G H J K L M A B HAC N O P UNIFIED METER AND A/C AMP. Description INFOID:0000000005246248 COMPONENT DESCRIPTION Unified Meter and A/C Amp. (Automatic Amplifier) The unified meter and A/C amp. (1) has a built-in microcomputer Component Function Check INFOID:0000000005246249 1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK 1. Press AUTO switch. 2. Display should indicate AUTO. Confirm that the compressor clutch engages (sound or visual inspection). Does magnet clutch engaged? YES >> INSPECTION END NO >> Go to Diagnosis Procedure. Refer to . Diagnosis Procedure INFOID:0000000005246250 1. INSPECTION BY FAIL-SAFE FUNCTION 1. Turn the ignition switch ON. 2. After approximately 30 seconds, check that the air conditioner is operated by the fail-safe function (the Is the fail-safe function operated? YES >> GO TO 3. NO >> GO TO 2. 2. CHECK UNIFIED METER AND A/C AMP. POWER SUPPLY CIRCUIT AND GROUND Check unified meter and A/C amp. power supply circuit and ground circuit. Refer to METER AND A/C AMP. : Diagnosis Procedure" . Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace parts according to the inspection results. 3. CHECK PRESET SWITCH Check preset switch. Refer to (WITHOUT NAVIGATION), [NAVIGATION (SINGLE MONITOR)] or [NAVIGATION (TWIN MONITOR)]. Is the inspection result normal? YES >> Replace unified meter and A/C amp. NO >> Repair or replace malfunctioning part(s). JSIIA1290ZZ |