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Home >> Chevrolet >> 2017 >> Sonic Premier, 4D Hatchback, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Lock System And Release Systems >> Diagnostic Information and Procedures >> Hatch Release Malfunction >> Circuit/System Testing >> Test 1
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Test 1

    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: S46B Liftgate Unlatch Switch
  3. Test for less than 10 ohms between the test points: Ground circuit terminal 2 and Ground
    • If 10 ohms or greater 
    1. Ground Connection - Disconnect
    2. Test for less than 2 ohms between the test points: Ground circuit terminal 2 at Component harness and 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.
    • If less than 10 ohms  : Go to next step.
  4. Ignition - On / Vehicle - In Service Mode
  5. Verify the scan tool parameter: Trunk Lid/Liftgate Window Exterior Unlatch Switch=Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K9 Body Control Module
    3. Test for infinite resistance between the test points: Signal circuit terminal 1 at Component harness and Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K9 Body Control Module
    • If the specified state  : Go to next step.
  6. Connect a 3A fused jumper wire between the test points: Signal circuit terminal 1 and Ground circuit terminal 2
  7. Verify the scan tool parameter: Trunk Lid/Liftgate Window Exterior Unlatch Switch=Active
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector: K9 Body Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1V between the test points: Signal circuit terminal 1 at Component harness and Ground
      • If 1V or greater - Repair the short to voltage on the circuit.
      • If less than 1V, go to step 5.
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points: Signal circuit terminal 1 at Component harness and Terminal 15 X6 at Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • If the specified state  : Go to next step.
  8. Test or replace the component: S46B Liftgate Unlatch Switch
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