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Home >> Buick >> 2019 >> Regal Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> Hatch Release Malfunction >> Component Testing

Component Testing

A23C Liftgate Latch Assembly

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: A23C Liftgate Latch Assembly
  3. Connect a jumper wire between the test points: Ground terminal 1 & Ground
  4. Momentarily connect a 7.5 A fused jumper wire between the test points: Control terminal 3 & 12 V

    Verify the component turns On and Off when connecting and disconnecting the jumper wire: A23C Liftgate Latch Assembly

    • If the component does not turn On and Off 

      Replace the component: A23C Liftgate Latch Assembly

    • Go to next step: If the component turns On and Off 
  5. All OK.

S46 Liftgate Handle Switch - Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S46 Liftgate Handle Switch
  3. Test for infinite resistance between the test points: Signal terminal 1 & Ground terminal 3 - Not Pressed
    • If less than infinite resistance 

      Replace the component: S46 Liftgate Handle Switch

    • Go to next step: If infinite resistance 
  4. Test for less than 3 ohms between the test points: Signal terminal 1 & Ground terminal 3 - Pressed
    • If 3 ohms or greater 

      Replace the component: S46 Liftgate Handle Switch

    • Go to next step: If less than 3 ohms 
  5. All OK.