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Diagnostic Tips

SENSOR VALUES 

Ambient Air Temperature 

The Instrument Cluster transmits Ambient Air Temperature Sensor data. In the event of a CAN Bus communication failure, the last stored value is displayed as a substitute value.

Interior Temperature 

The normal range for the Interior Temperature Sensor is from 32°F to 104°F. An implausible temperature value indicates that the Interior Temperature Sensor is bad. The repair in this case would be to replace the ATC Module since the sensor is integral to the module.

Evaporator Temperature 

The normal range for the Evaporator Temperature Sensor is from 14°F to 104°F. A substitute value of 14°F with no updates indicates an Evaporator Temperature Sensor circuit failure.

Air Outlet Temperature 

The normal range for the Air Outlet Temperature Sensor is from 32°F to 203°F. A substitute value of 111.1°F indicates an Air Outlet Temperature Sensor circuit failure.

Coolant Temperature 

The Engine Control Module transmits Coolant Temperature Sensor date. In the event of a CAN Bus communication failure, 257°F is displayed as a substitute value.

Interior Temperature Controller 

The normal range for the Blend control is from 62°F to 144°F. This value represents the temperature set by the operator. An implausible temperature value or a temperature value that fails to change when rotating the Blend control indicates that the Blend control is bad. The repair in this case would be to replace the ATC Module since the Blend control integral to the module.

Refrigerant Pressure 

The normal range for the Refrigerant Pressure Sensor is from 29 PSI to 406 PSI. A substitute value of 413 PSI indicates a Refrigerant Pressure Sensor circuit failure. In addition, the normal range for Pressure Sensor voltage is 0 volts to 5 volts. A value of 0.9 volts indicates an open voltage supply circuit, while a value of -999 indicates an open in all three sensor circuits.

Water Cycle Valve 

The normal range of the Water Cycle Valve is from 0% to 100%. The value indicates the extent to which the valve is closed. A value of 100% indicates that the valve is fully closed.

Intense Inst Light 

The Instrument Cluster transmits this data. The normal range for lighting intensity is from 0% to 100%. The value indicates the extent to which the illumination has dimmed. A value of 0% indicates bright while a value >0% indicates dimming. In the event of a CAN Bus communication failure, 0% is displayed as a substitute value.

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