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Mazda
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2009
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CX-9 FWD V6-3.7L
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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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U Code Charts
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U0402
U0402
U0402:68 - Abnormal message from TCM
BSM Control Module (LH/RH)
Initial Inspection and Diagnostic Overview