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MANUAL A/C DIAGNOSIS TSB Revision HEATING AND AIR CONDITIONING 55-18 TERMINAL CHECK ITEM CHECKING REQUIREMENTS NORMAL CONDITION 1 Power supply Ignition switch: "LOCK" (OFF) 0 V Ignition switch: "ON" Battery positive voltage 2 Input from thermistor sensor to Ignition switch and A/C switch: 0 V Ignition switch and A/C switch: 2 − 5 V 3 Thermistor sensor power supply Ignition switch and A/C switch: OFF 0 V Ignition switch and A/C switch: 5 V 4, 5 Output from controller to Air thermistor sensor detection ° C (41.0 ° F) or less 0 V Air thermistor sensor detection ° C (46.4 ° F) or less Battery positive voltage 6 - - - 7 Input from A/C switch (outside/ • Outside air switch: ON • Inside air switch: OFF 0 V • Outside air switch: OFF • Inside air switch: ON Battery positive voltage 8 Input from defroster switch Defroster switch (FOOT): ON 0 V Defroster switch (FOOT): OFF Battery positive voltage 9 Input from defroster switch Defroster switch (DEF): ON 0 V Defroster switch (DEF): OFF Battery positive voltage 10Input from A/C switch to controller A/C switch: OFF 0 V A/C switch: ON Battery positive voltage 11 Ground Always 0 V 12 - - - 13 Input from A/C switch (outside/ • Outside air switch: ON • Inside air switch: OFF Battery positive voltage • Outside air switch: OFF • Inside air switch: ON 0 V 14 Input from A/C switch (IND) to A/C switch: OFF 0 V A/C switch: ON Battery positive voltage 15 - - - 16 Output from controller to • Outside air switch: ON • Inside air switch: OFF Battery positive voltage • Outside air switch: OFF • Inside air switch: ON 0 V |