Operation CHARM
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Mercury
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1991
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Sable V6-232 3.8L
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Repair and Diagnosis
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Instrument Panel, Gauges and Warning Indicators
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Fuel Distance/Mileage Module
Fuel Distance/Mileage Module
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Description and Operation
Testing and Inspection
Check Fuel Tank Sending Unit System
Test Steps FD0 - FD3
Test Steps FE0 - FE2
Check If Speedo/Odometer Module Is Original
Check Speedometer Operation
DTE Always Reads Zero Miles
DTE Does Not Go Below 200 miles (322km) With Tank Empty
Instant Mileage Always Reads 0 or 99 mpg (99 or 0L/100km
Trip Distance Does Not Accumulate
Description and Operation
Testing and InspectionDescription and OperationTesting and Inspection