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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 440 (Steering Wheel And Steering Column) >> Diagnostic Information and Procedures >> DTC B2850, B2855, B2870, or B2875: Telescope Forward Switch/Tilt Up Switch >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
  2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Verify the scan tool tilt switch and telescope switch parameters are Inactive.
    • If not the specified value, test the signal circuits listed below for a short to voltage. If the circuit tests normal, replace the MSM.
    • Tilt Up Switch terminal 2
    • Tilt Down Switch terminal 6
    • Telescope Forward Switch terminal 3
    • Telescope Rearward Switch terminal 5
  4. Install a 3A fused jumper wire between the signal circuits listed below and the B+ circuit terminal 1. Verify the scan tool tilt switch and telescope switch parameters are Active.
    • Tilt Up Switch terminal 2
    • Tilt Down Switch terminal 6
    • Telescope Forward Switch terminal 3
    • Telescope Rearward Switch terminal 5
    • 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.
  5. If all circuit test normal, test or replace the tilt/telescope switch.
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