SFI SYSTEM(w/o EGR System) Fuel Injector Circuit
| DTC Code | DTC Name |
|---|---|
| Fuel Injector Circuit |
DESCRIPTION
The fuel injectors are located on the intake manifold. They inject fuel into the cylinders based on the signals from the ECM.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
INSPECT FUEL INJECTOR ASSEMBLY (POWER SOURCE)
*a
Front view of wire harness connector
(to Fuel Injector Assembly)
Disconnect the fuel injector connector.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
Standard Voltage
Cylinder
Tester Connection
Switch Condition
Specified Condition
No. 1
E1-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 2
n1-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 3
E2-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 4
n2-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 5
E3-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 6
n3-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 7
E4-2 - Body ground
Engine switch on (IG)
11 to 14 V
No. 8
n4-2 - Body ground
Engine switch on (IG)
11 to 14 V
Result
Result
OK
NG
NG INSPECT NO. 1 INTEGRATION RELAY (IG2)Click here
INSPECT FUEL INJECTOR ASSEMBLY
Inspect the fuel injector assembly
Result
Result
OK
NG
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM)
Disconnect the fuel injector connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Cylinder
Tester Connection
Condition
Specified Condition
No. 1
E1-1 - Body ground
Always
10 kΩ or higher
E1-1 - C31-6 (#10)
Always
Below 1 Ω
No. 2
n1-1 - Body ground
Always
10 kΩ or higher
n1-1 - C31-1 (#20)
Always
Below 1 Ω
No. 3
E2-1 - Body ground
Always
10 kΩ or higher
E2-1 - C31-7 (#30)
Always
Below 1 Ω
No. 4
n2-1 - Body ground
Always
10 kΩ or higher
n2-1 - C31-2 (#40)
Always
Below 1 Ω
No. 5
E3-1 - Body ground
Always
10 kΩ or higher
E3-1 - C31-8 (#50)
Always
Below 1 Ω
No. 6
n3-1 - Body ground
Always
10 kΩ or higher
n3-1 - C31-3 (#60)
Always
Below 1 Ω
No. 7
E4-1 - Body ground
Always
10 kΩ or higher
E4-1 - C31-9 (#70)
Always
Below 1 Ω
No. 8
n4-1 - Body ground
Always
10 kΩ or higher
n4-1 - C31-4 (#80)
Always
Below 1 Ω
Result
Result
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT NO. 1 INTEGRATION RELAY (IG2)
Inspect the No. 1 integration relay (IG2)
Result
Result
OK
NG
OK REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY - FUEL INJECTOR)