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Home >> Pontiac >> 2008 >> Solstice Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information & Procedures >> DTC B1025, B1035, B1045, or B1055 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
  2. Ignition ON, radio ON, test for 6.0-7.0 volts between the appropriate speaker channel circuit terminal A and ground.
    • If less than the specified range, test the speaker channel circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the radio (UW6) or amplifier (UQ3).
    • If greater than the specified range, test the speaker channel circuit for a short to voltage. If the circuit tests normal, replace the radio (UW6) or amplifier (UQ3).
  3. Ignition ON, radio ON, test for 6.0-7.0 volts between the appropriate speaker channel circuit terminal A and ground.
    • If less than the specified range, test the speaker channel circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the radio (UW6) or amplifier (UQ3).
    • If greater than the specified range, test the speaker channel circuit for a short to voltage. If the circuit tests normal, replace the radio (UW6) or amplifier (UQ3).
  4. If all circuits test normal, test or replace the appropriate speaker.
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