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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Controls And Fuel - 6.0L (L96) - DTC P0010 To DTC P0341) >> Diagnostic Information And Procedures >> DTC P0068 Or P1101: Throttle Body/Intake Air Flow Performance >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
  1. Verify the integrity of the entire air induction system by verifying that none of the following conditions exist:
    • Any damaged, improperly installed, collapsed or restricted components
    • Loose clamps, cracks or other damage
    • An air flow restriction
    • Restricted air filter
    • Splits, kinks, leaks, or improper connections at the vacuum hoses
    • Vacuum leaks at the intake manifold, MAP sensor, and throttle body
    • Water intrusion
    • Any snow or ice buildup, in cold climates
    • Contamination of the MAF sensor element
    • Missing, restricted or leaking exhaust components - Refer to Symptoms - Engine Exhaust for further diagnosis.
    • If a condition is found 

      Repair or replace component as appropriate.

    • Go to next step: If no condition is found 
  2. Test the engine for a mechanical condition. Refer to Symptoms - Engine Mechanical for diagnosis.
    • If a condition is found 

      Repair or replace component as appropriate.

    • Go to next step: If no condition is found 
  3. All OK
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