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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 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.

Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: Q40 Turbocharger Bypass Solenoid Valve
  3. Test for 5 to 15 ohms between the test points: Control terminal 2 & Ignition terminal 1
    • If not between 5 and 15 ohms 

      Replace the component: Q40 Turbocharger Bypass Solenoid Valve

    • Go to next step: If between 5 and 15 ohms 
  4. Test for infinite resistance between the test points: Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component: Q40 Turbocharger Bypass Solenoid Valve

    • Go to next step: If infinite resistance 
  5. All OK.

Dynamic Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: Q40 Turbocharger Bypass Solenoid Valve
  3. Connect a 10 A fused jumper wire between the test points: Ignition terminal 1 & 12 V
  4. CAUTION:

    Complete the testing as quickly as possible in order to prevent overheating and damaging the component.

  5. Momentarily connect a jumper wire between the test points: Control terminal 2 & Ground

    Verify the component turns On and Off when connecting and disconnecting the jumper wire: Q40 Turbocharger Bypass Solenoid Valve

    • If the component does not turn On and Off 

      Replace the component: Q40 Turbocharger Bypass Solenoid Valve

    • Go to next step: If the component turns On and Off 
  6. All OK.