LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B396C or B396D - 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 6000 to 6500 ohms between the test points: Signal terminal 3 & Ground terminal 1 - Switch S45B in position: 3/4
    • If not between 6000 and 6500 ohms 

      Replace the component: S45B Liftgate Control Switch - Interior

    • Go to next step: If between 6000 and 6500 ohms 
  7. Test for 1900 to 2100 ohms between the test points: Signal terminal 3 & Ground terminal 1 - Switch S45B in position: Maximum
    • If not between 1900 and 2100 ohms 

      Replace the component: S45B Liftgate Control Switch - Interior

    • Go to next step: If between 1900 and 2100 ohms 
  8. All OK.