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2012
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M37 x
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Repair and Diagnosis (Single Page)
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Transmission
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Transfer Case
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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
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
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.