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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Steering Wheel & Steering Column) >> Diagnostic Information and Procedures >> DTC B2850, B2855, B2870, or B2875 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Cadillac DTS. 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 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.
  3. Verify with the scan tool that the appropriate switch parameter is Inactive.
    • If not the specified value, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.
  4. Install a 3A fused jumper wire between the appropriate circuit terminal 1, 2, 3, or 5 and terminal 4. Verify with the scan tool that the appropriate switch parameter is Active.
    • If not the specified value, test the 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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