3-96 FUEL SYSTEM (DFI)
Never drop the injector, especially on a hard sur-
face. Such a shock to the injector can damage it.
Primary Fuel Injector
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.
Secondary Fuel Injector
The secondary fuel injectors inspection is as same as for
the primary fuel injectors.
Tip of a screw driver [A]
Secondary Fuel Injector [B]
The secondary fuel injectors operating with following
Engine speed is over 5 500 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.