Circuit/System Testing: Notes
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
- Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 4 and ground.
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
- Verify the all the scan tool tilt/telescope switch parameters are Inactive.
- Tilt Up Switch - signal circuit terminal 5
- Tilt Down Switch - signal circuit terminal 1
- Telescope Forward Switch - signal circuit terminal 3
- Telescope Rearward Switch - signal circuit terminal 2
- If any of the parameters are not the specified value, test the appropriate signal circuit terminal for a short to voltage. If the circuit tests normal, replace the MSM.
- Install a 3A fused jumper wire between the appropriate signal circuit terminal and the B+ circuit terminal 4. Verify the appropriate scan tool tilt/telescope switch parameter is Active.
- Tilt Up Switch - signal circuit terminal 5
- Tilt Down Switch - signal circuit terminal 1
- Telescope Forward Switch - signal circuit terminal 3
- Telescope Rearward Switch - signal circuit terminal 2
- If not the specified value, test the appropriate signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
- If all circuit test normal, test or replace the tilt/telescope switch.