Fuel Injector Removal/Installation
Refer to the Throttle Body Assy Disassembly/Assembly.
Fuel Injector Audible Inspection
Be sure the battery is fully charged.
Start the engine, and let it idle.
Apply the tip of a screwdriver [A] to the fuel injector [B].
Put the grip end onto your ear, and listen whether the fuel
injector is clicking or not.
A sound scope can also be used.
The click interval becomes shorter as the engine speed
Do the same for the other fuel injectors.
If all the fuel injectors click at a regular intervals, the fuel
injectors are normal.
Turn the ignition switch OFF.
If any fuel injector does not click, check the fuel injector
resistance (see Fuel Injector Resistance Inspection).
Fuel Injector Resistance Inspection
Fuel Tank (see Fuel Tank Removal)
Fuel Outlet Hose (see Fuel Hose Replacement in the
Periodic Maintenance chapter)
Disconnect the injector connector [A].
Connect a digital meter to the terminals of the injector [B].
Measure the fuel injector resistance.
Fuel Injector Resistance
For Fuel Injector #1
W/R ←→ BL/R terminal
For Fuel Injector #2
W/R ←→ BL/G terminal
For Fuel Injector #3
W/R ←→ BL/BK terminal
For Fuel Injector #4
W/R ←→ BL/Y terminal
Standard: About 11.7 ∼ 12.3 Ω at 20°C (68°F)
If the reading is out of the standard, replace the injector.
If the reading is within the standard, check the power
source voltage (see Fuel Injector Power Source Voltage
FUEL SYSTEM (DFI) 3-123