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Home >> Cadillac >> 2011 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1798 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Radio Does Not Interface with Personal Audio Link Module >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Verify that the iPod® is in good working order and visually inspect the iPod® connector cavity for any signs of damage before performing this diagnostic. Verify the most up to date software has been downloaded from http://www.apple.com/support/ipod/ to the iPod® before performing this diagnostic.

  1. Tune to a strong AM or FM station and verify each speaker is producing clear and even sound, with no distortion.
  2. Ignition ON, Observe the PAL red LED lamp. Verify the red LED lamp is illuminated.
    • If the PAL red LED is not illuminated, go to Circuit/System Testing.
  3. Set the radio to the iPod® interface menu and attempt to operate audio from the iPod®.
  4. Inspect the interface harness at the connection to the iPod® and verify that audio quality from the iPod® is not changed when the harness is bent in multiple directions.
    • If the audio changes quality or drops out, inspect the iPod® connector cavity or interface cable for damage. If no damage found, replace the iPod® interface cable.