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Home >> Dodge and Ram >> 2008 >> Durango 3.7 K >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 ((Front Control Module (FCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> B106B-Rear Defrost Control Circuit Low >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2009 Dodge Durango and 2009 Chrysler Aspen. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
JUNCTION BLOCK (JB) FUSE #24
(F504) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT SHORTED TO GROUND
(F921) IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN
(F504) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN
(C115) DEFOGGER RELAY CONTROL CIRCUIT OPEN
(C115) DEFOGGER RELAY CONTROL CIRCUIT SHORTED TO GROUND
REAR BLOWER MOTOR RELAY (IF EQUIPPED) SHORTED
REAR WINDOW DEFOGGER RELAY SHORTED/OPEN
JUNCTION BLOCK (JB)
INTEGRATED POWER MODULE (IPM)
FRONT CONTROL MODULE (FCM)