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Home >> Volvo >> 2010 >> XC90 Base, AWD >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Axle Shafts >> Differential Electronic Module (DEM) Diagnostic Trouble Codes - 2 Of 2 >> DEM-P066727: Pcm / ECM / TCM Internal Temperature Sensor Range/Performance. General Signal Failures. Signal Rate Of Change Above Threshold (B6324S, TF-80SC AWD; 2009-2010) >> Diagnostic Trouble Code (DTC) Information DEM-P066727 >> Notes
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Diagnostic Trouble Code (DTC) Information DEM-P066727: Notes

Condition 

The Differential Electronic Module (DEM) has a temperature sensor fitted on the control module's circuit board. If the temperature rises too quickly, four-wheel drive disengages. This is to protect the control module.

The diagnostic trouble code (DTC) is stored if the control module detects that:

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

NOTE:

The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Fig 1: Control Module
GLL106599Courtesy of VOLVO CARS CORPORATION

Substitute Value 

Possible Source 

Fault symptom[s]