Component Testing
WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X1 harness connector at the S48A Multifunction Switch - Instrument Panel.
- Test for infinite resistance between the signal circuit terminal 17 and the ground terminal 14 with the switch in the open position.
- If less than infinite resistance
Replace the S48A Multifunction Switch - Instrument Panel.
- Go to next step: If infinite resistance
- If less than infinite resistance
- Test for less than 2 Ω between the signal terminal 17 and the ground terminal 14 with the switch in the closed position.
- If 2 Ω or greater
Replace the S48A Multifunction Switch - Instrument Panel.
- Go to next step: If less than 2 Ω
- If 2 Ω or greater
- All OK.