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Compass Trailhawk
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Repair and Diagnosis (Single Page)
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General Information
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OEM General Information
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(Global Telematics Box Module - Electrical Diagnostics)
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DTC Troubleshooting
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B143A-13-Microphone 1-Circuit Open
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Set Condition
Set Condition
The Global Telematics Box Module (TBM2) detects an open on either the Emergency Microphone (+), Emergency Microphone (-), Microphone 1 (+), and Microphone 1 (-) circuits.