Injector Balance Test Procedure (Step7-11) - Isuzu C22NE Workshop Manual

Step
Was the "On-Board Diagnostic (OBD) System
1 Check" performed?
1. Turn the engine OFF.
Notice: In order to prevent flooding of a single cylinder
and possible engine damage, relieve the fuel pressure
before performing the fuel injector coil test procedure.
2. Relieve the fuel pressure. Refer to Test Description
Number 2.
3. Connect the 5-8840-2618-0 Fuel Injector Tester to B+
and ground, and to the 5-8840-2589-0 Injector Adapter
Cable.
4. Remove the harness connector of the Fuel Injector and
2 connect the 5-8840-2589-0 Injector Adapter Cable for
F/I check.
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 5-8840-2392-0 Digital
Voltmeter (DVM) to the fuel injector tester. Refer to the
illustrations associated with the test description.
7. Set the DVM to the tenths scale (0.0).
8. Observe the engine coolant temperature.
Is the engine coolant temperature within the specified
values?
1. Set the injector adapter cable to injector #1.
2. Press the "Push to Start Test" button on the fuel
injector tester.
3. Observe the voltage reading on the DVM.
Important: The voltage reading may rise during the test.
3 4. Record the lowest voltage observed after the first
second of the test.
5. Set the injector adapter cable to the next injector and
repeat steps 2, 3, and 4.
Did any fuel injector have an erratic voltage reading (large
fluctuations in voltage that did not stabilize) or a voltage
reading outside of the specified values?
Replace the faulty fuel injector(S). Refer to Fuel Injector.
4
Is the action complete?
Injector Coil Test Procedure (Steps 1-6) and
Injector Balance Test Procedure (Steps 7-11)
Action
DRIVEABILITY AND EMISSIONS 6E1-65
Value(s) Yes
- Go to Step 2
10°C (50°F)
to
35°C (95°F) Go to Step 3
5.7-6.6V Go to Step 4
- Go to Step 7
No
Go to OBD
System
Check
Go to Step 5
Go to Step 7
-