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Home >> Dodge and Ram >> 2021 >> Durango R/T, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 ((Drivetrain Control Module (DTCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> C147B-Front Axle Disconnect Sensor Circuit Performance >> Possible Causes
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Possible Causes

WARNING: This page is about a different car, the 2021 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
FRONT AXLE DISCONNECT (FAD) RELAY
(F348) FAD RELAY COIL CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
FRONT AXLE LOCK SIGNAL CIRCUIT SHORTED TO VOLTAGE
FRONT AXLE LOCK SIGNAL CIRCUIT OPEN
FRONT AXLE LOCK SIGNAL CIRCUIT SHORTED TO GROUND
FRONT AXLE LOCK CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE
SHIFT MOTOR CONTROL B CIRCUIT SHORTED TO VOLTAGE
PDC
DTCM

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .