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TROUBLESHOOTING HEATER, AIR CONDITIONER AND VENTILATION 55-189 35 Rear air mix damper motor When the rear air conditioner is System voltage When the rear air conditioner is 0 − 1 V 36 Rear air mix damper motor When the rear air conditioner is System voltage When the rear air conditioner is 0 − 1 V 37 Outside/inside air selection When setting the Fresh air position 0 − 1 V When setting the air recirculation System voltage 38 Outside/inside air selection When moving to air recirculation 0 − 1 V When moving to fresh air position System voltage 35~42 − − − 43 ILL power supply Lighting switch: ON System voltage 44 ILL earth Always 0 V 45 Front blower relay Ignition switch: IG2 0 − 1 V 46 PTC heater relay <Vehicles PTC heater: ON 0 − 1 V PTC heater: OFF System voltage 51 Rear temperature control Rear air volume adjusting switch: System voltage Rear air volume adjusting switch: 0 − 1 V 52 Rear air conditioner switch Rear air volume adjusting switch: 0 − 1 V 53 Rear air conditioner switch Rear air volume adjusting switch: 1 0 − 1 V 54 Rear air conditioner switch Rear air volume adjusting switch: 2 0 − 1 V 55 Rear air conditioner switch Rear air volume adjusting switch: 3 0 − 1 V 56 Rear blower relay Ignition switch: ON 0 − 1 V 57 − − − Terminal Check items Check conditions Normal conditions |