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Component Testing

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

Liftgate Unlatch Switch

  1. Ignition OFF, disconnect the harness connector at the S46B Liftgate Unlatch Switch.
  2. Test for infinite resistance between the signal terminal 1 and the low reference terminal 2 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S46B Liftgate Unlatch Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 3 Ω between the signal terminal 1 and the low reference terminal 2 with the switch in the closed position.
    • If 3 Ω or greater 

      Replace the S46B Liftgate Unlatch Switch.

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

Liftgate Close Switch

  1. Ignition OFF, disconnect the harness connector at the B70 Liftgate Close Switch.
  2. Test for infinite resistance between the signal terminal 4 and the low reference terminal 3 with the switch in the open position.
    • If less than infinite resistance 

      Replace the B70 Liftgate Close Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 3 Ω between the signal terminal 4 and the low reference terminal 3 with the switch in the closed position.
    • If 3 Ω or greater 

      Replace the B70 Liftgate Close Switch.

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

Interior Liftgate Control Switch

  1. Ignition OFF, disconnect the harness connector at the S45B Liftgate Control Switch-Interior.
  2. Test for infinite resistance between the signal terminal 4 and the ground terminal 2 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S45B Liftgate Control Switch-Interior.

    • Go to next step: If infinite resistance 
  3. Test for less than 3 Ω between the signal terminal 4 and the ground terminal 2 with the switch in the closed position.
    • If 3 Ω or greater 

      Replace the S45B Liftgate Control Switch-Interior.

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