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6E–102 ENGINE DRIVEABILITY AND EMISSIONS 9 1. Connect the 5-8840-0378-0 Fuel Injector Tester and 5-8840-2589-0 Injector Adapter Cable to the 2. Set the amperage supply selector switch on the fuel injector tester to the “Balance Test” 0.5-2.5 3. Using the Scan Tool 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. 8. Subtract the second pressure reading from the first pressure reading for one fuel injector. The 9. Obtain a pressure drop value for each fuel injector. 10. Add all of the individual pressure drop values. This 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 10kPa (1.5psi) Go to Step 10 Go to OBD System Check 10 Re-test any fuel injector that does not meet the 10kPa (1.5psi) Go to Step 11 Go to Symptoms 11 1. Replace the faulty fuel injector(s). Refer to Fuel Injector. 2. Disconnect the 5-8840-2589-0 Injector Adapter Cable for F/I check and re-connect the original F/I Is the action complete? — Verify repair — Step Action Value(s) Yes No |