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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Electric Vehicle Control Unit (EVCU) Module - DTCS B12A4-11 To P1138-00 - 500 - Electric) >> DTC Troubleshooting >> P0688-00-ASD/Main Sense Circuit >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
FUSED B(+) CIRCUIT OPEN
ASD OUTPUT CIRCUIT(S) SHORTED TO GROUND
ASD OUTPUT CIRCUIT(S) OPEN OR HIGH RESISTANCE
ASD RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND
ASD RELAY CONTROL CIRCUIT OPEN
ASD RELAY
ELECTRIC VEHICLE CONTROL UNIT (EVCU)
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 ELECTRIC VEHICLE CONTROL SYSTEM, STANDARD 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