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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Outside Air Temperature Display Malfunction - DTC B0158 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B9 ambient air temperature sensor.
  2. Install a 3 A fused jumper wire between the signal circuit terminal A and the low reference circuit terminal B. Verify the scan tool Ambient Air Temperature parameter displays greater than 54°C (130°F).
    • If less than the specified range, test the low reference circuit a short to voltage or an open/high resistance. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
  3. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal A and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
  4. Verify the accuracy of the B9 ambient air temperature sensor. Refer to Ambient Air Temperature Sensor Resistance .
    • If not within the specified range, replace the B9 ambient air temperature sensor.
  5. If all circuits test normal, test or replace the B9 ambient air temperature sensor.
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