Lack/Loss Of Power (F150 Lightning 5.4L SC Only)

Check supercharger bypass system operation. Go to TEST KJ, step 13)  under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Also check high speed fuel pump secondary circuits. Go to TEST KA, step 70)  under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.