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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B1000-44 To B1072-11 >> DTC Troubleshooting >> B1050-15-Column Switch Module (CSM) MAINLIGHTS - Circuit Short To Battery Or Open >> Possible Causes

Possible Causes

Possible Causes
MAIN LIGHTING SWITCH CIRCUIT SHORTED TO VOLTAGE
MAIN LIGHTING SWITCH CIRCUIT OPEN
HEADLAMP SWITCH

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

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