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QX50 AWD
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Repair and Diagnosis (Single Page)
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Transfer Case
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Transfer Case (DTC/Circuit Diagnosis)
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DTC/Circuit Diagnosis
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DTC P1809: Transfer Control Unit
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DTC Logic
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DTC Detection Logic
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DTC Detection Logic
DTC
Display item
Malfunction detected condition
Possible cause
P1809
CONTROL UNIT 4
Malfunction has occurred inside AWD control unit.
AD converter system of transfer control unit is malfunctioning.