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Subaru
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2021
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Crosstrek Base, Standard Trans
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Repair and Diagnosis
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Transmission
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Transfer Case
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AWD Control System (Diagnostics)
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Diagnostic Procedure With Diagnostic Trouble Code (DTC)
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DTC P1F09: Control Module Processor
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General Description
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Outline Of Diagnosis
Outline Of Diagnosis
Detect malfunction of the microcomputer CAN register area.
Judge as NG if a comparison of CAN register area write and read yields a mismatch.