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Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Final Drive Control Module (FDCM) - Electrical Diagnostics) >> DTC Troubleshooting >> C1401-Transfer Case Range Select Switch Circuit Low >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED OPEN
(K977) MODE SELECT CIRCUIT SHORTED TO GROUND
(K977) MODE SELECT CIRCUIT SHORT OPEN
TRANSFER CASE SELECTOR SWITCH
FINAL DRIVE CONTROL MODULE
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