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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P2261 >> Component Testing

Component Testing

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Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: Q40 Turbocharger Bypass Solenoid Valve
  3. Test for 10 to 14 ohms between the test points: Control terminal 2 & Ignition terminal 1 - Q40 Turbocharger Bypass Solenoid Valve
    • If not between 10 and 14 ohms 

      Replace the component: Q40 Turbocharger Bypass Solenoid Valve

    • Go to next step: If between 10 and 14 ohms 
  4. All OK.

Dynamic Test

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

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

  5. Momentarily connect a 10 A fused jumper wire between the test points: Ignition terminal 1 & 12 V

    Verify the component opens and closes: Q40 Turbocharger Bypass Solenoid Valve

    • If the component does not open and close 

      Replace the component: Q40 Turbocharger Bypass Solenoid Valve

    • Go to next step: If the component opens and closes 
  6. All OK.
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