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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Steering >> Steering Wheel And Steering Column >> Diagnostic Information and Procedures >> Steering Column Tilt/Telescoping Malfunction >> Circuit/System Testing

Circuit/System Testing

Tilt/Telescope Switch Circuit Malfunction

  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 circuit 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 circuit 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.

Tilt/Telescope 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 volts.
    • If greater than the specified range, test the signal circuit 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 circuit 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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