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Home >> GMC >> 2018 >> Acadia SL >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Vehicle Access System >> Diagnostic Information And Procedures >> DTC B396C Or B396D: Liftgate Mode Switch Circuit/Front Liftgate Actuator Switch Circuit (Liftgate Interior Release Open/Close Switch Malfunction) >> Component Testing

Component Testing

S45B Liftgate Control Switch - Interior-Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S45B Liftgate Control Switch - Interior
  3. Test for infinite resistance between the test points: Signal terminal 4 & Ground terminal 1 - Not Pressed
    • If less than infinite resistance 

      Replace the component: S45B Liftgate Control Switch - Interior

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

      Replace the component: S45B Liftgate Control Switch - Interior

    • Go to next step: If less than 3 ohms 
  5. Test for 600 to 700 ohms between the test points: Signal terminal 3 & Ground terminal 1 - Switch S45B in position: Off
    • If not between 600 and 700 ohms 

      Replace the component: S45B Liftgate Control Switch - Interior

    • Go to next step: If between 600 and 700 ohms 
  6. Test for 1300 to 1400 ohms between the test points: Signal terminal 3 & Ground terminal 1 - Switch S45B in position: 3/4
    • If not between 1300 and 1400 ohms 

      Replace the component: S45B Liftgate Control Switch - Interior

    • Go to next step: If between 1300 and 1400 ohms 
  7. Test for 4000 to 5000 ohms between the test points: Signal terminal 3 & Ground terminal 1 - Switch S45B in position: Maximum
    • If not between 4000 and 5000 ohms 

      Replace the component: S45B Liftgate Control Switch - Interior

    • Go to next step: If between 4000 and 5000 ohms 
  8. All OK.