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Home >> Fiat >> 2018 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Electric Vehicle Control Unit (EVCU) Module - DTCS P1139-00 To U1487-00 - 500 - Electric) >> DTC Troubleshooting >> P1AE5-00-Hybrid/EV Battery Power Off Circuit >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
HIGH VOLTAGE CONTACTOR CONTROL CIRCUIT SHORTED TO VOLTAGE
HIGH VOLTAGE CONTACTOR CONTROL CIRCUIT SHORTED TO GROUND
HIGH VOLTAGE CONTACTOR CONTROL CIRCUIT OPEN
ELECTRIC VEHICLE CONTROL UNIT (EVCU)
BATTERY PACK CONTROL MODULE (BPCM)
WARNING:

On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury.

Refer to HIGH-VOLTAGE POWER DOWN PROCEDURE to perform the High Voltage Power Down procedure.

Always perform the Pre-Diagnostic Troubleshooting Procedure before proceeding. Refer to  EVCU PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .