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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1535 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1025, B1035, B1045, or B1055 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Test the speaker circuits for an open, short to voltage, or short to ground.
    • Test for 5-6 volts on speaker signal (+) and return (-) circuits during the short condition.
  2. If the circuit tests normal, test or replace the radio.
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