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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B1856-13 To U1701-87 >> DTC Troubleshooting >> B1870-23-Doors Lock_Unlock Central Switch - Signal Stuck Low >> Possible Causes

Possible Causes

Possible Causes
DOOR LOCK/UNLOCK SWITCH STUCK
DOOR LOCK/UNLOCK SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
DOOR LOCK/UNLOCK SWITCH
BODY CONTROL MODULE (BCM)

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

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