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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Active Noise Cancellation System) >> Diagnostic Information and Procedures >> DTC B0560 (without IOR) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector:X3 @ K108 Active Noise Cancellation Module/T3 Audio Amplifier
  3. Engine Running @ 600 RPM
  4. Test for 575 to 800 Hz between the test points:Signal circuit terminal 2 & Ground
    • If not between 575 and 800 Hz 
    1. Ignition/Vehicle & All vehicle systems - Off
    2. Disconnect the appropriate electrical connector: @ K20 Engine Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:Signal circuit terminal 2 & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle & All vehicle systems - Off
    6. Test for infinite resistance between the test points:Signal circuit terminal 2 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    7. Test for less than 2 ohms between the test points:Signal circuit terminal 2 & The other end of the circuit
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:K20 Engine Control Module
    • Go to next step: If between 575 and 800 Hz 
  5. Test or replace the component:K108 Active Noise Cancellation Module/T3 Audio Amplifier
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