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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 1.0L (L4B L4F L4G LIJ) Or 1.2L (L4H L4K LIF LIH) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0033-P0035 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On/Vehicle - In Service Mode
  2. Perform the scan tool control function: Turbocharger Bypass Solenoid Valve - Active & Inactive

    Verify the scan tool parameter:

    • Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status = Not Run or OK
    • Turbocharger Bypass Solenoid Valve Control Circuit Low Voltage Test Status = Not Run or OK
    • Turbocharger Bypass Solenoid Valve Control Circuit Open Test Status = Not Run or OK
    • If not the specified state 

      Refer to Circuit/System Testing

    • Go to next step: If the specified state 
  3. Perform the scan tool control function: Turbocharger Bypass Solenoid Valve - Active & Inactive

    Verify a click can be heard or felt at the following component(s) when the scan tool control function was commanded: Q40 Turbocharger Bypass Solenoid Valve

    • If a click cannot be heard or felt 

      Refer to Circuit/System Testing

    • Go to next step: If a click can be heard or felt 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to Circuit/System Testing

    • Go to next step: If the DTC does not set 
  5. All OK.
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