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TROUBLESHOOTING AUTOMATIC AIR CONDITIONER 55B-89 STEP 6. Replace the photo sensor and recheck Q: Is the check result normal? YES : This diagnosis is complete. NO : Replace the automatic A/C control panel (A/ SERVICE DATA REFERENCE TABLE M1554005101098 Item No. Check items Check contents 15 Illumination Displays the illumination condition of the heater control 19 Ambient temperature sensor Displays the detected temperature of the Ambient 20 Air thermo sensor Displays the detected temperature of the air thermo 21 Interior temperature sensor Displays the detected temperature of the Interior 23 Temperature setting Displays the set temperature. 24 Engine coolant TEMP. sensor Displays the detected temperature of the Engine coolant 27 A/C Compressor drive request Displays the operation of the A/C compressor. 28 Air conditioner switch Displays the condition of the A/C switch. 30 PTC heater drive request Displays the condition of the PTC heater drive request 34 Idle up request Displays the idle-up condition. 45 In/out select damp poten (target) Displays the target position of the inside/outside air 46 In/out select damp potentiometer Displays the condition of inside/outside air selection 55 Air outlet c/o potentiometer Displays the set air outlet position. 56 Air outlet c/o potentio. (Target) Displays the target position of the mode selection 60 Rear defogger switch Displays the condition of the rear window defogger 63 Air mix potentiometer Displays the condition of air mixing damper control 67 Photo sensor Displays the volume of insolation. 68 Front blower fan Displays the air volume of the blower. 69 Front blower fan (Target) Displays the target value of the blower motor. 72 Rear defogger relay Displays the condition of the rear window demister ACTUATOR TEST TABLE M1554005200393 Item No. Check items Drive content 1 A/C compressor drive* OFF |