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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 408 (Body Control Module (BCM) - DTCS B180F-15 To U1433-24 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> B2121-15-Ignition Run Control 1 - Circuit Short To Battery Or Open >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
IGNITION RUN RELAY CONTROL CIRCUIT OPEN
IGNITION RUN RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
IGNITION RUN RELAY 1 AND 2
BODY CONTROL MODULE (BCM)
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