FixVault
Home › Chevrolet › 2021 › Traverse LS, FWD › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Vehicle Access System › Diagnostic Information and Procedures › Power Door Lock Key Cylinder Switches Malfunction › Circuit/System Testing

Circuit/System Testing

    NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector. A23D Door Latch Assembly - Driver
  3. Test for less than 10 ohms between the test points: Ground circuit terminal 3 & Ground
    • If 10 ohms or greater 
    1. Ground Connection - Disconnect
    2. Test for less than 2 ohms between the test points: Ground circuit terminal 3 @ Component harness & Ground Connection
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  4. Connect the electrical connector: A23D Door Latch Assembly - Driver
  5. Disconnect the electrical connector. S79D Window Switch - Driver
  6. Connect a test lamp between the test points: Signal circuit terminal 14 & B+
  7. Operate the component: B29D Door Lock Key Cylinder Switch - Driver - Lock & Unlock

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: A23D Door Latch Assembly - Driver
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 14 @ Component harness & 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 - Off
    6. Test for less than 2 ohms between the test points: Signal circuit terminal 14 @ Component harness & Terminal 4 @ A23D Door Latch Assembly - Driver
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: A23D Door Latch Assembly - Driver
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: A23D Door Latch Assembly - Driver
    3. Test for infinite resistance between the test points: Signal circuit terminal 14 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: A23D Door Latch Assembly - Driver
    • Go to next step: If the test lamp turns On and Off 
  8. Test or replace the component: S79D Window Switch - Driver
About FixVault