Service manual

G424F(FE) Service Manual 216 Chapter 7. MPI Gasoune Fuel Delivery System
Remove Service Tool And Connect the
Fuel Line
1. Disconnect the Fuel Pressure Gage and Hose
from the Fuel Pressure Gage Connector.
2. Disconnect the Fuel Pressure Gage Connector
from the Fuel Pressure Gage Adapter.
3. Disconnect the fuel feed hose from the Fuel
Pressure Gage Adapter.
4. Disconnect the Fuel Pressure Gage Adapter from
the delivery pipe.
CAUTION
Cover the hose connection with a shop towel to
prevent splashing of fuel caused by residual
pressure in the fuel line.
5. Conenct the fuel feed hose to the delivery pipe.
Inspect Fuel Leakage On Connection
1. Connect the battery negative (-) terminal.
2. Apply battery voltage to the fuel pump terminal
and activate the fuel pump. With fuel pressure
applied, check that there is no fuel leakage from
the fuel pressure gauge or connection part.
3. If the vehicle is normal, connect the fuel pump
connector.
Injector
Component Location
Description
Based on information from various sensors, the
ECM measures the fuel injection amount. The fuel
injector is a solenoid-operated valve and the fuel
injection amount is controlled by length of time the
fuel injector is held open. The ECM controls each
injector by grounding the control circuit. When the
ECM energizes the injector by grounding the control
circuit, the circuit voltage should be low (theoretically
0V) and the fuel is injected. When the ECM de-
energizes the injector by opening control circuit, the
fuel injector is closed and circuit voltage should be
peak for a moment.
Specification
Injector resistane : 12~14Ω
Schematic diagram