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Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1265 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2012 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, radio OFF, radio B+ fuse removed. Disconnect all of the harness connectors listed below:
    • T3 Audio Amplifier X3
    • P17 Color/Navigation Info Display Module X1 (if equipped)
  2. Install the radio B+ fuse. Ignition ON, A11 radio ON.
  3. Verify that a test lamp illuminates between the control circuit terminals listed below and ground:
    • T3 Audio Amplifier X3 terminal 8
    • P17 Color/Navigation Info Display Module X1 terminal 6 (if equipped)
    • If the test lamp does not illuminate. 
    1. Ignition OFF. Disconnect the X1 harness at the A11 radio.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance.
    3. Test for less than 2 Ω in the control circuit end to end.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the A11 radio.
    • If the test lamp illuminates. 
  4. Verify that DTC B1265 does NOT set as each component is connected one at a time.
    • If DTC B1265 sets. 

      Replace the module/component that was just connected

    • If DTC B1265 does not set. 
  5. All OK.
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