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Home >> Fiat >> 2013 >> 500e >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Electric Vehicle Control Unit (EVCU) Module - DTCS P1139 To U1487 - 500E >> Diagnosis And Testing >> P1C77-Reverse Button Stuck On >> When Monitored

When Monitored

Ignition switch is in the run position.

BCM is powered on.

EVCU is powered on.

System voltage is between 10.5 and 18 volts.