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Home >> Cadillac >> 2013 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls/Fuel - Hybrid (LZ1) - DTC P0010 To DTC P0341) >> Diagnostic Information and Procedures >> DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, or P0161 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, open the hood to disable the Auto-Stop function. Refer to Hybrid Modes of Operation Description .
  2. Ignition ON, verify the scan tool hood position parameter displays Open.
  3. Engine idling, command the appropriate HO2S heater ON and OFF with a scan tool while observing the following control circuit status parameters:
    • HO2S Bn 1 or 2 Sen 1 or 2 Htr Ckt Short Gnd Test Status
    • HO2S Bn 1 or 2 Sen 1 or 2 Htr Ckt Open Test Status
    • HO2S Bn 1 or 2 Sen 1 or 2 Htr Ckt Short Volts Test Status

      Each parameter should display OK or Not Run.

  4. Engine idling at operating temperature, observe the scan tool HO2S Heater parameter . The amperage should be between 0.5-2 A.
  5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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