LEMON Manuals
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2022
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Defender 110
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Repair and Diagnosis
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General Information
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Specifications Index
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Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) -- Defender/L663
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Diagnostic Trouble Code Index - DTC: Audio Amplifier Module (AAM) (G2804413)
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Description And Operation
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Audio Amplifier Module (AAM)
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DTC B1969-4B: External Sound Synthesis Module - Over temperature
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Possible Causes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Causes
Passive cooling mechanism has failed (blocked air vents, ambient air circulation restricted)
Exterior synthetic sounder module internal fault causing over temperature