Component Testing

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

A23 Door Latch Assembly

Ignition/Vehicle - Off
Disconnect the appropriate electrical connector: A23 Door Latch Assembly
Test for infinite resistance between the test points:
- A23D Door Latch Assembly - Driver Signal terminal 6 & Ground terminal 8 - The switch is in the open position.
- A23P Door Latch Assembly - Passenger Signal terminal 1 & Ground terminal 3 - The switch is in the open position.
- If less than infinite resistance
  Replace the component: A23 Door Latch Assembly
- Go to next step: If infinite resistance
Test for less than 3 ohms between the test points:
- A23D Door Latch Assembly - Driver Signal terminal 6 & Ground terminal 8 - The switch is in the closed position.
- A23P Door Latch Assembly - Passenger Signal terminal 1 & Ground terminal 3 - The switch is in the closed position.
- If 3 ohms or greater
  Replace the component: A23 Door Latch Assembly
- Go to next step: If less than 3 ohms
All OK.

M30 Liftgate Latch

Ignition/Vehicle - Off
Disconnect the electrical connector: M30 Liftgate Latch
Test for infinite resistance between the test points: Signal terminal 4 & Ground terminal 2 - The switch is in the open position.
- If less than infinite resistance
  Replace the component: M30 Liftgate Latch
- Go to next step: If infinite resistance
Test for less than 3 ohms between the test points: Signal terminal 4 & Ground terminal 2 - The switch is in the closed position.
- If 3 ohms or greater
  Replace the component: M30 Liftgate Latch
- Go to next step: If less than 3 ohms
All OK.