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Home >> Jeep >> 2019 >> Grand Cherokee Laredo, AWD, Automatic T/Case Control >> Repair and Diagnosis >> General Information >> OEM General Information >> (Emergency Assistance Module (EAM) Electrical Diagnostics) >> DTC Troubleshooting >> B143A-13 - Microphone 1-Circuit Open >> Possible Causes

Possible Causes

Possible Causes
EMERGENCY MICROPHONE (+/-) CIRCUIT OPEN
MICROPHONE 1 IN (+/-) CIRCUIT OPEN
INSIDE REARVIEW MIRROR
RADIO
EMERGENCY ASSISTANCE MODULE (EAM)

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

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