3-110 FUEL SYSTEM (DFI)
Never drop the injector, especially on a hard sur-
face. Such a shock to the injector can damage it.
Set up the fuel tank (see Air Cleaner Housing Removal).
Start the engine.
Apply the tip of a screwdriver [A] to the injector [B]. Put
the grip end onto your ear, and listen whether the injector
is clicking or not.
A sound scope can also be used.
Do the same for the other injector.
If all the injectors click at a regular intervals, the injectors
The click interval becomes shorter as the engine speed
If either injector doesn't click, perform the "Injector Signal
Test" for injector operation.
The secondary fuel injectors operating with following
Engine speed is over 8 000 rpm (r/min)
Throttle opening is over 30°
Injector Signal Test
Prepare two test light sets with male terminals as shown.
Rating of Bulb [A]: 12 V × 3 ∼ 3.4 W
Terminal Width [B]: 1.8 mm (0.07 in.)
Terminal Thickness [C]: 0.8 mm (0.03 in.)
Do not use larger terminals than specified above. A
larger terminal could damage the injector main har-
ness connector (female), leading to harness repair
Be sure to connect bulbs in series. The bulb works
as a current limiter to protect the solenoid in the
injector from excessive current.
Remove connectors for injector [A].
Connect each test light set [B] to the injector sub harness
Turn the ignition switch ON.
While cranking the engine with the starter motor, watch
the test lights.
If the test lights flicker at regular intervals, the injector
circuit in the ECU, and the wiring are good. Perform the
"Injector Resistance Inspection" in this chapter.