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Home >> Chevrolet >> 2021 >> Traverse Premier, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Cellular, Entertainment, And Navigation System) >> Diagnostic Information and Procedures >> Voice Recognition Malfunction >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle off, disconnect harness connector X1 at the K73 Telematic Control Module, vehicle in service mode.
  2. Test for 8-10 V between signal circuit terminal 15 and ground.
    • If less than 8 V 
    1. Test circuit 5149 for a short to ground.
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found.
    2. Test circuit 5149 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found.
    3. Replace the A11 Radio.
    • If greater than 10 V 
    1. Test circuit 5149 for a short to voltage.
      • If a short to voltage is found, repair the fault on the circuit.
      • Go to next step: If a short to voltage is not found.
    2. Replace the A11 Radio.
    • Go to next step: If between 8-11 V 
  3. Test the low reference circuit terminal 14 for an open/high resistance in the circuit.
    • If an open/high resistance is found repair the fault on the circuit. 
    • Go to next step: If an open/high resistance is not found. 
    1. Test circuit 5152 for a short to ground.
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found.
    4. NOTE:

    Refer to the Owners Manual and/or the Navigation System Owners Manual for voice recognition use and commands.

  4. Begin voice recognition for the infotainment system and clearly speak one of the available commands.
  5. Verify the infotainment system responds correctly to the command.
    • If the infotainment system does not respond correctly to the command 
    1. Clearly speak a different command.
    2. Verify the infotainment system responds correctly to the command.
      • If the infotainment system does not respond correctly to any commands, replace the K73 Telematic Control Module.
    • Go to next step: If the infotainment system responds correctly to the command 
  6. A fault is currently not present and may be an intermittent condition.
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