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6E–62 ENGINE DRIVEABILITY AND EMISSIONS Injector Coil Test Procedure (Steps 1-6) and Injector Balance Test Procedure (Steps 7-11)
Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to OBD System Check 2 1. Turn the engine “OFF.” NOTE: In order to prevent flooding of a single cylinder 2. Relieve the fuel pressure. Refer to Test Description Number 2. 3. Connect the 5-8840-2638-0 Fuel Injector Tester to B+ and ground, and to the 5-8840-2619-0 Injector 4. Connect the injector switch box to the grey fuel injector harness connector located on the front of 5. Set the amperage supply selector switch on the fuel injector tester to the “Coil Test” 0.5 amp position. 6. Connect the leads from the 5-8840-0285-0 Digital Voltmeter (DVM) to the injector tester. Refer to the 7. Set the DVM to the tenths scale (0.0). Is the engine coolant temperature within the specified 10 ° C (50 ° F) to 35 ° C (95 ° F) Go to Step 3 Go to Step 5 3 1. Set injector switch box injector #1. injector tester. 3. Observe the voltage reading on the DVM. IMPORTANT: The voltage reading may rise during the 4. Record the lowest voltage observed after the first second of the test. 5. Set the injector switch box to the next injector and repeat steps 2, 3, and 4. Did any fuel injector have an erratic voltage reading 5.7-6.6 V Go to Step 4 Go to Step 7 4 Replace the faulty fuel injector(s). Refer to Fuel Injector. Is the action complete? — Go to Step 7 — |