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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis (Single Page) >> Steering >> Steering Wheel And Steering Column >> Diagnostic Information and Procedures >> DTC B2860 or B2880: Telescope Position Sensor, Tilt Position Sensor >> Circuit/System Testing

Circuit/System Testing

Telescope or Tilt Sensor Circuit Malfunction

  1. Ignition OFF, disconnect the harness connector at the steering wheel tilt/telescope position sensor.
  2. Ignition OFF, test for less than 2.0 ohms between the low reference circuit terminal B and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
  3. Ignition ON, test for 4.8 - 5.2 volts between the 5-volt reference circuit terminal C 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.
  4. Verify the scan tool Tilt Sensor and Telescope Sensor parameter is less than 0.2 volt.
    • If greater than the specified range, test the signal circuits listed below for a short to voltage. If the circuit tests normal, replace the MSM.
    • Tilt Sensor terminal A
    • Telescope Sensor terminal D
  5. Install a 3A fused jumper wire between the signal circuits listed below and the 5-volt reference circuit terminal C. Verify the scan tool tilt sensor and telescope sensor parameter is greater than 4.8 volts.
    • Tilt Sensor terminal A
    • Telescope Sensor terminal D
    • If less than the specified range, test the appropriate signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
  6. If all circuits test normal, replace the steering column.

Tilt/Telescope Actuator Circuit Malfunction

  1. Ignition OFF, disconnect the harness connector at the tilt/telescope actuator.
  2. Install a test lamp between the control circuit terminals listed below of the tilt/telescope motor.
    • Tilt Up/Tilt Down terminals 1 and 2
    • Telescope Forward/Telescope Rearward terminals 1 and 2
  3. Command the column to tilt up and down or telescope in and out using the tilt/telescope switch. The test lamp should illuminate with each command.
    • If the test lamp does not illuminate, test the appropriate tilt/telescope control circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
  4. If all circuits test normal, replace the steering column.
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