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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (Engine Controls And Fuel - 2.0L - DTC P000A To DTC P0238) >> DTC P0096, P0097, P0098, or P0099 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that debris is not blocking the airflow through the charge air cooler (CAC).
  2. Ignition OFF, disconnect the harness connector at the intake air pressure and temperature sensor.
  3. Ignition OFF for 90 seconds, test for less than 5 ohms between the low reference circuit terminal 1 or A 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 ECM.
  4. Ignition ON, verify the scan tool IAT Sensor 2 parameter is colder than -39°C (-38°F).
    • If warmer than the specified range, test the signal circuit terminal 2 or B for a short to ground. If the circuit tests normal, replace the ECM.
  5. Install a 3A fused jumper wire between the signal circuit terminal 2 or B and ground. Verify the scan tool IAT Sensor 2 parameter is warmer than 142°C (288°F).
    • If less than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal replace the ECM.
  6. If the circuits test normal, test or replace the intake air pressure and temperature sensor.
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