Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 383

13A-24
Code No.41 Injector system
Range of check
Engine: while cranking, or running
Engine speed: 4,000 r/min or less
System voltage: 10 V or more
Fuel shut off, or forcible activating of injector (actuator test) is not in operation.
Set conditions
Injector open circuit check signal is not output from the injector driver predetermined
time(s).
Check the injector. (Refer to P.13A-109.)
OK
Measure at injector driver relay connec-
tor A-53.
Disconnect the connector, and
measure at the harness side.
(1) Voltage between terminal 3 and
earth
(Ignition switch: ON)
OK: System voltage
(2) Voltage between terminal 1 and
earth
OK: System voltage
OK
Measure at engine-ECU connector
B-28.
Disconnect the connector, and
measure at the harness side.
Voltage between terminal 20 and
earth (Ignition switch: ON)
OK: System voltage
OK
Measure at injector driver connector
A-52.
Disconnect the connector, and
measure at the harness side.
(1) Voltage between 12, 21 and earth
(Ignition switch: ON)
OK: System voltage
(2) Voltage between 13, 22 and earth
OK: System voltage
(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
OK
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GDI –
Troubleshooting
NG
Replace
(1) NG
Check the following connector:
B-18
Repair
(2) NG
Check the following connector:
A-23
Repair
NG
Check the following connector:
A-53
Repair
(1) NG
Check the following connector:
A-53
Repair
(2) NG
Check the harness wire between the
injector driver and earth, and repair if
necessary.
(3) NG
Check the following connectors:
A-48, A-49, A-54, A-60, A-82
Repair
Probable cause
Malfunction of the injector
Faulty injector driver relay
Faulty injector driver
Open circuit or short-circuited harness wire in the
injector drive circuit, or poor connector contact
Malfunction of the engine-ECU
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
Check trouble symptom.
NG
Check the harness wire between the
injector driver relay and ignition switch,
and repair if necessary.
Check trouble symptom.
NG
Check the harness wire between the
injector driver relay and battery, and
repair if necessary.
Check trouble symptom.
NG
Check the harness wire between the
injector driver relay and engine-ECU,
and repair if necessary.
Check trouble symptom.
NG
Check the harness wire between the
injector driver and injector driver relay,
and repair if necessary.
Check trouble symptom.
NG
Check the harness wire between the
injector driver and injector, and repair
if necessary.