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3-118 FUEL SYSTEM (DFI)
Fuel Injectors
Removal/Installation
•
Refer to the Throttle Body Assy Disassembly/Assembly
(see Throttle Body Assy Disassembly/Assembly).
CAUTION
Never drop the injector, especially on a hard sur-
face. Such a shock to the injector can damage it.
Power Source Voltage Inspection
NOTE
○
Be sure the battery is fully charged.
•
Turn the ignition switch OFF.
•
Remove the ECU (see ECU Removal).
○
Do not disconnect the ECU connectors.
•
Connect a digital meter [A] to the connector [B], with the
needle adapter set.
Special Tool - Needle Adapter Set: 57001-1457
Injector Power Source Voltage at ECU Connector
Connections to ECU Connector
Meter (+) → W/R lead (terminal 14)
Meter (–) → Battery (–) Terminal
•
Measure the power source voltage with the engine
stopped, and with the connectors joined.
•
Turn the ignition switch ON.
Power Source Voltage at ECU
Standard: Battery Voltage for 4 seconds, and then 0 V
If the power source voltage is less than the standard,
check the fuel pump relay (see Fuel Pump Relay Inspec-
tion), wiring (see wiring diagram in this section), and the
ECU for its ground, and power supply (see ECU Power
Supply Inspection chapter). If the relay, wiring, ground
and power supply are good, replace the ECU (see ECU
section).
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