MPV LX 2WD V6-3.0L SOHC (1998)
Fuel Injector: Component Tests and General Diagnostics
Fuel Injector on-Vehicle Inspection
1. Warm up the engine and let it idle.
2. Turn off the electrical loads and A/C switch.
3. Connect the SST (NGS tester) to the data link connector-2.
4. Select "PID/DATA MONITOR AND RECORD" and press TRIGGER.
5. Select "RPM" and press TRIGGER.
6. Press START.
7. Using a soundscope, listen for the fuel injector operation sound
at all cylinders.
(1) Open the throttle valve and increase the engine speed to 4,000 rpm.
(2) Quickly close the throttle valve and verify that the fuel injector operation sound stops when the throttle valve is closed, and starts again when
the engine speed dropped below 1,000 rpm.
(1).If the operation sound does not stop at all cylinders, inspect the idle switch terminal 3L voltage.
(2).If the operation sound does not stop at some cylinders, inspect the suspected faulty fuel injector and related wiring harness and connector.
(3).If the operation sound stops but the fuel injectors resume operation at an engine speed Out of the specification, check CTP SW and ECT
PIDs.
8. Place the vehicle on a chassis roller.
9. Check the following
(1) Select "INJ" and press TRIGGER.
(2) Press START.
(3) Depress the accelerator pedal and increase the engine
speed to 2,000 rpm.
(4) Release the accelerator pedal (brake pedal not depressed) and check that the fuel injector duration time is 0 msec., and 2-5 msec. when the
engine speed drops below 1,000 rpm.
(5) If not, check the TR SW PID.
Fuel Injector Resistance Test
