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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B2494 - Liftgate Handle Switch Malfunction >> Component Testing

Component Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S46B Liftgate Unlatch Switch
  3. Test for infinite resistance between the test points: Signal terminal 1 & Low Reference terminal 2 - Switch Not Pressed
    • If less than infinite resistance 

      Replace the component: S46B Liftgate Unlatch Switch

    • Go to next step: If infinite resistance 
  4. Test for less than 3 Ω between the test points: Signal terminal 1 & Low Reference terminal 2 - Switch - Pressed
    • If 3 Ω or greater 

      Replace the component: S46B Liftgate Unlatch Switch

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