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Home >> Chevrolet >> 2008 >> HHR SS, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Diagnostic Information and Procedures >> Radio Does Not Interface with Personal Audio Link Module >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the PAL module.
  2. Test for less than 5 Ω between terminal 9 and ground.
    • If greater than specified value, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between terminal 16 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
  4. Ignition OFF, reconnect the harness connector at the PAL module.
  5. Ignition ON, set the radio to the iPod® interface menu and attempt to operate audio from the iPod®.
    • If the iPod® fails to communicate with the radio, replace the interface cable.
  6. Near the BCM connector, verify the serial data circuit from PAL is properly spliced to the serial data circuit.
    • If the serial data circuit is not connected, reconnect the circuit.
  7. Ignition OFF, disconnect the PAL module and the X1 radio harness connector.
  8. Test for less than 1 Ω between terminal 9 at the X1 radio harness connector and terminal 5 at the X1 PAL module harness connector.
    • If greater than specified value, replace the T-harness.
  9. If all systems test normal, replace the PAL module.
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