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Home >> Chevrolet >> 2011 >> Camaro LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.6L - DTC P0008 Through P0191 >> DTC P0132 or P0152 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.
  2. Ignition ON, verify that the scan tool HO2S 1 voltage parameter is between 350-500 mV.
    • If less than the specified range, test the signal circuit terminal B or 4 for a short to ground. If the circuit/connections test normal, replace the K20 ECM.
    • If greater than the specified range, test the signal circuit terminal B or 4 for a short to voltage. If the circuit/connections test normal, replace the K20 ECM.
  3. Install a 3 A fused jumper wire between the signal circuit terminal B or 4 and ground. Verify the scan tool HO2S 1 voltage parameter is less than 60 mV.
    • If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit/connections test normal, replace the K20 ECM.
  4. Connect a 3 A fused jumper wire between the signal circuit terminal B or 4 and the low reference circuit terminal A or 3. Verify the scan tool HO2S 1 voltage parameter is less than 60 mV.
    • If greater than the specified range, test the low reference circuit for an open/high resistance or for a short to voltage. If the circuit/connections test normal, replace the K20 ECM.
  5. Verify that the following conditions do not exist:
    • If you find any of the above conditions, repair as necessary.
  6. If all circuits/connections test normal, replace the appropriate B52 HO2S.
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