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6E–74 6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS Injector Coil Test Procedure (Steps 1-6) and Injector Balance Test Procedure (Steps 7-11) (Cont'd) Step No Yes Value(s) Action 9 1. Connect the J 39021-5V Fuel Injector Tester and J 39021-90 Injector Switch Box the fuel injector 2. Set the amperage supply selector switch on the fuel injector tester to the “Balance Test” 0.5–2.5 amp 3. Using the Tech 2 turn the fuel pump “ON” then “OFF” in order to pressurize the fuel system. 4. Record the fuel pressure indicated by the fuel pressure gauge after the fuel pressure stabilizes. 5. Energize the fuel injector by depressing the “Push to Start Test” button on the fuel injector tester. 6. Record the fuel pressure indicated by the fuel pressure gauge after the fuel pressure gauge 7. Repeat steps 1 through 6 for each fuel injector. pressure reading for one fuel injector. The result is 9. Obtain a pressure drop value for each fuel injector. is the total pressure drop. 11. Divide the total pressure drop by the number of fuel injectors. This is the average pressure drop. Does any fuel injector have a pressure drop value that 10 kPa (1.5 psi) Go to Step 10 Go to OBD System Check 10 Re-test any fuel injector that does not meet the NOTE: Do not repeat any portion of this test before Does any fuel injector still have a pressure drop value 10 kPa (1.5 psi) Go to Step 11 Go to Symptoms 11 Replace the faulty fuel injector(s). Refer to Fuel Injector. Is the action complete? — Verify repair — |