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3-122 FUEL SYSTEM (DFI)
Fuel Injectors
Fuel Injector Removal/Installation
•
Refer to the Throttle Body Assy Disassembly/Assembly.
Fuel Injector Audible Inspection
NOTE
○
Be sure the battery is fully charged.
•
Start the engine, and let it idle.
•
Apply the standard tip 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
rises.
•
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
•
Remove the throttle body assy with the connectors in-
stalled (see Throttle Body Assy Removal).
•
Disconnect the fuel injector connector.
•
Connect a digital meter to the terminals [A] of the fuel
injector.
•
Measure the fuel injector resistance.
Fuel Injector Resistance
Connections:
Standard: About 11.7
∼ 12.3 Ω at 20°C (68°F)
If the reading is out of the standard, replace the fuel in-
jector.
If the reading is within the standard, check the power
source voltage (see Fuel Injector Power Source Voltage
Inspection).
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