GDI ± Troubleshooting
13A-25
Code No.41 Injector system Probable cause
Range of check
D Engine: while cranking, or running
D Engine speed: 4,000 r/min or less
D System voltage: 10 V or more
D Fuel shut off, or while forcible activating of injector (actuator test) is in operation.
Set conditions
D Injector open circuit check signal is not output from the injector predetermined
time(s).
D Malfunction of the injector
D Faulty injector driver relay
D Faulty injector driver
D Open circuit or short-circuited harness wire in the
injector drive circuit, or poor connector contact
D Malfunction of the engine-ECU
(2) NG
Check the following connector:
A-36
OK
Check trouble symptom.
(2) NG
Check the harness wire between the
injector driver and earth, and repair if
necessary.
(3) NG
Check the following connectors:
A-61, A-62, A-63, A-64, A-78
OK
Check trouble symptom.
Check the injector. (Refer to
P.13A-106.)
NG
Replace
OK
(1) NG
Check the following connectors:
C-72, C-74
OK
Check trouble symptom.
NG
Check the harness wire between the
injector driver relay and ignition switch,
and repair if necessary.
NG
Repair
NG
Check the harness wire between the
injector driver relay and battery, and
repair if necessary.
NG
Repair
OK
Measure at engine-ECU connector
C-18.
D Disconnect the connector, and
measure at the harness side.
D Voltage between terminal 55 and
earth (Ignition switch: ON)
OK: System voltage
NG
Check the following connector:
A-44X
OK
Check trouble symptom.
NG
Check the harness wire between the
injector driver relay and engine-ECU,
and repair if necessary.
NG
Repair
OK
Measure at injector driver connector
A-55.
D Disconnect the connector, and
measure at the harness side.
(1) Voltage between 12, 21 and earth
(Ignition switch: ON)
OK: System voltage
(2) Continuity between 13, 22 and earth
OK: Continuity
(3) Resistance between terminals 14
and 23
Resistance between terminals 15
and 24
Resistance between terminals 16
and 25
Resistance between terminals 17
and 26
OK: 0.9 ± 1.1 Ω
(1) NG
Check the following connector:
A-44X
OK
Check trouble symptom.
NG
Check the harness wire between the
injector driver and injector driver relay,
and repair if necessary.
NG
Repair
NG
Check the harness wire between the
injector driver and injector, and repair
if necessary.
NG
Repair
OK
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Measure at injector driver relay connec-
tor A-44X.
D Disconnect the connector, and
measure at the harness side.
(1) Voltage between terminal 4 and
earth
(Ignition switch: ON)
OK: System voltage
(2) Voltage between terminal 3 and
earth
OK: System voltage
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