FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Mercedes Benz
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1990
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300E 4MATIC (124.230) L6-3.0L (103.985)
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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Powertrain Management
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Fuel Injection System (CIS-E)
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Impulse Counter
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Code 31 (Intake Air Temperature Sensor Circuit)
Code 31 (Intake Air Temperature Sensor Circuit)
An intermittent contact has been recognized in the intake air temperature sensor circuit. Refer to
ELECTRICAL AND ELECTRONIC DIAGRAMS
. Repair or replace wiring harness as necessary.