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Home >> Jeep >> 2020 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> External Pages >> Different car >> Section 251 (Amplifier (Amp) - DTCS B143B-11 To B147E-12 - 2500HD & 3500HD) >> DTC Troubleshooting >> B143B-13-ANC Microphone 1-Circuit Open >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ANC MICROPHONE 1
ANC MICROPHONE 1 (+/-) CIRCUIT OPEN
AMPLIFIER

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

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