A/C Control Module
As the data values given in the following are standard values estimated on the basis of values obtained from the normally operation 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.
SYMPTOM DIAGNOSIS DESCRIPTION CHART
| Scan Tool Data | Condition | Normal Condition/Reference Value |
|---|---|---|
| Temp Cont Switch See Scan Tool Data Definitions | Ignition switch turned on and temperature selector at maximum cool position | Max cool (Selected position of temperature selector is displayed) |
| Mode Cont Switch See Scan Tool Data Definitions | Ignition switch turned on and "MODE" (air flow) switch at VENT position | FACE (Selected position of air flow selector is displayed) |
| Fan Cont Switch See Scan Tool Data Definitions | Ignition switch turned on and blower fan speed at minimum | 1st (Selected position of blower speed selector is displayed) |
| Air Intake Mode See Scan Tool Data Definitions | Ignition switch turned on and air intake switch at fresh air (FRE) position | FRE |
| Ignition switch turned on and defrost switch turned on | ||
| Ignition switch turned on and "MODE" (air flow) switch selected to "D/F" mode | ||
| Ignition switch turned on and air intake selector at recirculation air (REC) position | REC | |
| Ignition switch turned on and "AUTO" switch turned on | AUTO | |
| Vehicle Speed See Scan Tool Data Definitions | At stop with ignition switch turned on | 0 km/h (0 mph) |
| ECT See Scan Tool Data Definitions | Ignition switch turned on | Engine coolant temperature is displayed |
| Engine Type See Scan Tool Data Definitions | Ignition switch turned on | Engine type is displayed |
| Meter Spec See Scan Tool Data Definitions | Ignition switch turned on | Combination meter spec is displayed |
| Outside Air Temp See Scan Tool Data Definitions | Ignition switch turned on | Outside air temperature is displayed |
| Cabin Temperature See Scan Tool Data Definitions | Ignition switch turned on | In-car temperature is displayed |
| Sun Load See Scan Tool Data Definitions | Reference value depends on the situation | 0.00 W/m - 1986 W/m |
| Evaporator Temp See Scan Tool Data Definitions | Ignition switch turned on | Evaporator temperature is displayed |
| Refrigerant Pressure See Scan Tool Data Definitions | A/C ON (A/C is operating) with engine running at ambient temperature 30 °C (86 °F) | 1130 - 1560 kPa (For details, refer to pressure of high pressure gauge under A/C SYSTEM PERFORMANCE INSPECTION : Manual A/C) |
| A/C OFF (A/C is not operating) with engine running at ambient temperature 30 °C (86 °F) and engine coolant temperature 90 °C - 100 °C (194 °F - 212 °F) | 600 - 1000 kPa after longer than 10 minute since A/C switch turned off | |
| Air Mix Pos Sen See Scan Tool Data Definitions | Ignition switch turned on and temperature selector at maximum cool position | 0.5 V |
| Ignition switch turned on and temperature selector at maximum hot position | 4.5 V | |
| Mode Pos Sensor See Scan Tool Data Definitions | Ignition switch turned on and "MODE" (air flow) switch at VENT position | 0.5 V |
| Ignition switch turned on and defrost switch turned on | 4.5 V | |
| Fan Desired Volt See Scan Tool Data Definitions | Ignition switch turned on and blower fan speed at maximum | Approx. 12.0 V |
| Ignition switch turned on and blower fan speed at minimum | Approx. 4.0 V | |
| A/C Cont Sig See Scan Tool Data Definitions | A/C switch turned on and blower motor running with engine running | ON |
| A/C switch turned on and defrost switch turned on | ||
| A/C switch turned on and "MODE" (air flow) switch selected to "D/F" mode | ||
| A/C switch turned off with engine running | OFF | |
| Blower Load Sig See Scan Tool Data Definitions | Ignition switch turned on and blower motor running | ON |
| Ignition switch turned on and blower fan speed at off or minimum | OFF | |
| Air Comp Clutch See Scan Tool Data Definitions | A/C switch turned on and blower motor running with engine running | ON |
| A/C switch turned off with engine running | OFF |