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HOMESERVICE MANUALSCHEVROLET2015CRUZE ECO, AUTOMATIC TRANSREPAIR AND DIAGNOSISELECTRICALINSTRUMENT PANEL SYSTEM DISPLAYS AND GAUGESDIAGNOSTIC INFORMATION AND PROCEDURESDTC B0158: AMBIENT AIR TEMPERATURE SENSOR CIRCUITCIRCUIT/SYSTEM TESTING
2015 Chevrolet Cruze Eco, Automatic Trans

Circuit/System Testing

2015 Chevrolet Cruze Eco, Automatic TransSECTION Circuit/System Testing
NOTE: Circuit/System Verification  must be performed before proceeding with Circuit/System Testing.
  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B9 Ambient Air Temperature Sensor. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 Ω between the low reference circuit terminal B (or 2) and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the P16 Instrument Cluster.
    • If less than 10 Ω 
  3. Ignition ON.
  4. Verify the scan tool Ambient Air Temperature parameter is greater than 98%.
    • If 98% or less 
    1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
    2. Test for infinite resistance between the signal circuit terminal A (or 1) and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the P16 Instrument Cluster.
    • If greater than 98% 
  5. Install a 3 A fused jumper wire between the signal circuit terminal A (or 1) and the low reference circuit terminal B (or 2).
  6. Verify the scan tool Ambient Air Temperature parameter is less than 8%.
    • If 8% or greater 
    1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. Ignition OFF
    4. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the P16 Instrument Cluster.
    • If less than 8% 
  7. Test or replace the B9 Ambient Air Temperature Sensor.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.