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Conditions for Setting the DTC

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B320A 39 

An internal malfunction or a momentary voltage spike has been detected by the driver door lock/window switch or passenger door lock/window switch in the front power window motor while commanding the window UP/DOWN.

B320A 42 

A not normalized/programmed driver or front passenger door power window motor.

B320A 4B 

The front window motor experiences a loss of voltage in the B+ circuit or an open/high resistance in the serial data circuit.

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