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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B1048-15 To B1054-23 >> DTC Troubleshooting >> B1050-15 Column Switch Module (CSM) Main Lights - Circuit Short To Battery Or Open >> Possible Causes
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Possible Causes

Possible Causes
MAIN LIGHTING SWITCH CIRCUIT SHORTED TO VOLTAGE
MAIN LIGHTING SWITCH CIRCUIT OPEN
MULTIFUNCTION SWITCH (INTEGRAL TO THE CLOCKSPRING)

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