Service Manual — page 180 of 715

Fuel System (DFI) › Fuel Injector Resistance Inspection
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3-90 FUEL SYSTEM (DFI)
Fuel Injectors #1, #2, #3, #4 (Service Code 41, 42, 43, 44) (DTC P0201, P0202,
P0203, P0204)
  Inspect the eligible injector according to the following ser-
vice code or DTC.
   Service Code 41/DTC P0201 → Fuel Injector #1
   Service Code 42/DTC P0202 → Fuel Injector #2
   Service Code 43/DTC P0203 → Fuel Injector #3
   Service Code 44/DTC P0204 → Fuel Injector #4
Fuel Injector Removal/Installation
• Refer to the Throttle Body Assy Disassembly/Assembly.
Fuel Injector Audible Inspection
• Remove:
   Side Covers (see Side Cover Removal in the Frame
   chapter)
•Start the engine, and let it idle.
•Apply the flat 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.
•Turn the ignition switch off.
 If the fuel injector clicks at regular intervals, the fuel injec-
 tor is good.
 If the fuel injector does not click, check the fuel injector
 resistance (see Fuel Injector Resistance Inspection).
Fuel Injector Resistance Inspection
• Remove:
    Air Cleaner Housing (see Air Cleaner Housing Removal)
• Connect a digital
  Disconnect  the fuel injector connector.
• injector.          meter to the terminals [A] of the fuel

• Measure the fuel injector resistance.
    Fuel Injector Resistance
      Standard: About 12.0 Ω @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).