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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 B16FB-11 To B178E-11 >> DTC Troubleshooting >> B178E-11 Headlamp Switch Input - Circuit Short To Ground >> Possible Causes
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Possible Causes

Possible Causes
HEADLAMP SWITCH MUX CIRCUIT SHORTED TO GROUND
HEADLAMP SWITCH MUX CIRCUIT SHORTED TO THE HEADLAMP SWITCH MUX RETURN CIRCUIT
HEADLAMP SWITCH
BODY CONTROL MODULE (BCM)

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