Circuit/System Testing
WARNING: This page is about a different car, the 2013 GMC Acadia, 2013 Chevrolet Traverse, and 2013 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector for all position sensors connected to the 5-volt reference circuit.
- Ignition ON, observe all scan tool sensor parameters for Seat 1 Info and Column Info. The readings should be 0.0 volts.
- If greater than the specified value, test the appropriate signal circuits listed below for a short to voltage. If the circuit tests normal, replace the MSM.
- Horizontal position sensor terminal 2
- Front vertical position sensor terminal 2
- Rear vertical position sensor terminal 2
- Recline position sensor terminal 2
- Tilt position sensor terminal A X2
- Telescope position sensor terminal D X2
- Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit at any one of the position sensors and ground.
- If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
- If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
- Connect each position sensor one at a time and verify that the DTC does not set as current.
- If the DTC sets as current, replace the appropriate position sensor.
- If all circuits test normal, replace the MSM.