Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Diagnosis and Testing (5.3L): Notes
WARNING: This page is about a different variant/trim than selected.
Tools Required
- EN-46999 Active Fuel Management Tester
- EN-46999-1 Active Fuel Management Tester Air Adapter. See Special Tools .
- EN-46999-5 Active Fuel Management Tester Harness - Small Block V8. See Special Tools .
IMPORTANT:
- This component test applies only to vehicles with functional active fuel management.
- A minimum shop air source of 206 kPa (30 psi) is required for manifold testing.
- A water bleed is located on the EN-46999 . Occasionally, depress the valve in order to remove excess water from the tool.