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Home >> Jeep >> 2024 >> Gladiator Nighthawk, Part Time T/Case Control, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B2121-11 To B2206-00 >> DTC Troubleshooting >> B2121-15 Ignition Run Control 1 - Circuit Short To Battery Or Open >> Possible Causes
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Possible Causes

Possible Causes
IGNITION RUN CONTROL OUTPUT CIRCUIT OPEN
IGNITION RUN CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE
RUN 1 RELAY
POWER DISTRIBUTION CENTER (PDC) ASSEMBLY
BODY CONTROL MODULE (BCM)

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