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Digital Radio Output Circuit Malfunction

  1. Ignition OFF, disconnect the X2 harness connector at the radio.
  2. Ignition ON, radio ON and tuned to XM, test for a varying mV AC voltage reading between the following signal circuit terminals listed below and ground.
    • Left audio signal (+) - terminal 1
    • Right audio signal (+) - terminal 2
    • Audio common signal (-) - terminal 9
    • If the varying mV A/C voltage reading is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the DRR.
  3. If all circuits test normal, test or replace the radio.
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