HVAC Control Module
As the data values given below are standard values estimated on the basis of values obtained from the normally operating vehicles by using a scan tool, use them as reference values. Even when the vehicles are in good condition, there may be cases where the checked values do not fall within each specifies data range. Therefore, judgement as abnormal should not be made by checking with these data alone.
| Scan Tool Data | Condition | Normal Condition/Reference Value | |
|---|---|---|---|
| Temp Cont Switch | Each reference value is relative to the selected position according to temperature selector of HVAC control module. (Centigrade temperature) | Max cool, 16.5 °C - 30.5 °C, Max hot | |
| Temp Cont Switch | Each reference value is relative to the selected position according to temperature selector of HVAC control module. (Fahrenheit temperature) | Max cool, 58 °F - 86 ° F, Max hot | |
| Mode Cont Switch | Each reference value is relative to the selected position according to airflow selector of HVAC control module. | AUTO, FACE, B/L, FOOT, DE-FO, DEF | |
| Fan Cont Switch | Each reference value is relative to the selected position according to blower speed selector of HVAC control module. | AUTO, OFF 1st, 2nd - 7th, 8th | |
| Air Intake Mode | Fresh air (FRE) mode is activated. | FRE | |
| Recirculation air (REC) mode is activated. | REC | ||
| AUTO mode is activated. | AUTO | ||
| Vehicle Speed | Vehicle stops. | 0 km/h (0 mph) | |
| ECT | At specified idle speed after warming up. | -80 °C - 100 °C (-176 °F - 212 °F) | |
| Engine Type | Each reference value is relative to the vehicle model. | J24B | |
| Outside Air Temp | Reference value is relative to outside air temperature. | -40 °C - 87.5 °C (-40 °F - 189.5 °F) | |
| Cabin Temperature | Reference value is relative to in car temperature. | -40 °C - 87.5 °C (-40 °F - 189.5 °F) | |
| Sun Load | Reference value depends on the situation. | 0.00 W/m2 - 4447.8 W/m2 | |
| Evaporator Temp | Reference value is relative to temperature of evaporator. | -40 °C - 87.5 °C (-40 °F - 189.5 °F) | |
| Refrigerant Pressure | Engine running. | A/C system is ON (compressor is operating) at ambient temperature: 25 °C (77 °F) | For more details, refer to pressure of high pressure gauge under A/C SYSTEM PERFORMANCE INSPECTION . |
| A/C system is ON (compressor is not operating) at ambient temperature: 25 °C (77 °F) and engine coolant temperature: 90 °C - 100 °C (194 °F - 212 °F) | 600 - 1000 kPa after longer than 10 min from A/C switch turned off. | ||
| Air Mix Pos Sen | Reference value is relative to the position of temperature selector of HVAC control module. | Approx. 1.5 V (Max Hot) | |
| Approx. 4.5 V (Max Cool) | |||
| Mode Pos Sensor | Reference value is relative to the position of air flow control selector of HVAC control module. | Approx. 0.5 V (DEF) | |
| Approx. 4.5 V (VENT) | |||
| R/F Pos Sensor | Reference value is relative to the position of air intake selector of HVAC control module. | Approx. 4.0 V (REC) | |
| Approx. 0.9 V (FRE) | |||
| Fan Desired Volt | Reference value is relative to the position of blower speed selector of HVAC control module. | 0 - 16.0 V | |
| A/C Cont Sig | A/C system is ON. | ON | |
| A/C system is OFF. | OFF | ||
| Rear DEF Indicator | Rear defogger indicator light is lighted. | ON | |
| Rear defogger indicator light is not lighted. | OFF | ||
| A/C Comp Clutch | Magnet clutch is engaged. | ON | |
| Magnet clutch is not engaged. | OFF | ||