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Subaru
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1999
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Impreza L Coupe F4-2.2L SOHC
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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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DTC 23
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Transmission Control Systems
Transmission Control Systems
Trouble Code 23-At Load Signal (Except 2200 cc California Spec. Vehicles)
Diagnosis:
Input signal circuit of TCM from ECM is open or shorted.
Trouble Symptom:
Excessive shift shock.
Wiring Diagram