Mitsubishi MOTORS CARISMA 1996, Service Bulletin

Page: 132 / 232

CODE NO.41 INJECTOR SYSTEM PROBABLE CAUSE
Range of check
•
While engine is cranking or running
•
Engine speed is 4,000 r/min or less
•
System voltage is 10 V or more
•
While fuel cut and injector forced drive (actuator test) are not being carried out
Set conditions
•
Injector open circuit check signal is not output by the injector driver for a set
number of times
•
Malfunction of the injector
•
Malfunction of the injector driver control
relay
•
Malfunction of the injector driver
•
Open circuit or short-circuited harness
wire of the injector drive circuit
•
Malfunction of the engine-ECU
Check the injector. (Refer to P.13J-96.)
NG OK
OK
Check the following connectors:
A-51, A-52, A-53, A-54
Check the harness wire between the
intermediate connector and the injector
NG OK NG
Repair Repair
Replace the injector.
1.NG
Check the injector driver control relay.
(Refer to P.13J-93.)
2. NG OK NG
Check the following connector: A-117
OK Repair
Check the following connectors:
Repair A-22, A-117, A-118
OK NG
Check the harness wire between the
injector driver and the earth, and repair
if necessary
Repair
3. NG
Check the following connectors:
B-58, B-70
OK
Check the harness wire between the
injector driver and the injector driver con-
trol relay. Check the harness wire be-
tween the injector driver control relay
and the battery.
Measure at the injector driver connector
A-117.
•
Disconnect the connector, and
measure at the harness side.
1. Voltage between 12 and earth
Voltage between 21 and earth
(Ignition switch: ON)
OK:
System Voltage
2. Continuity between 13 and earth
Continuity between 22 and earth
OK: Continuity
3. Continuity between 17 and 26
Continuity between 16 and 25
Continuity between 15 and 24
Continuity between 14 and 23
OK:
13 - 16
Ω
Repair OK NG
OK
Repair
Check the harness wire between the
injector driver and the intermediate con-
nector, and repair if necessary
OK
Check trouble symptom
NG
Replace the engine-ECU
1. NG
Measure ate the engine-ECU connector
B-19
•
Connect the harness
•
voltage between 20 and earth
(Ignition switch: ON)
OK : System voltage
NG Check the following connectors:
A-117, B-21
OK
Check the following connectors:
B-15, B-19
OK NG
Repair
2. NG
Repair
Check the following connectors:
A-117, B-19
NG OK
Measure at the engine-ECU connectors
B-19, B-21
•
Connect the connector
1. Voltage between 51 and earth
(Ignition switch: ON)
OK: 4.0 - 5.0 V
2. Voltage between 1 and earth
Voltage between 2 and earth
Voltage between 14 and earth
Voltage between 15 and earth
OK:
10 - 12 V
OK Repair
Check the harness wire between the
engine-ECU and the injector driver con-
trol relay. Check the harness wire be-
tween the injector driver control relay
and the ignition switch.
NG NG
Check trouble symptom.
Check the harness wire between the
engine-ECU and the injector driver, and
repair if necessary.
Repair
NG
Replace the injector driver.
Check trouble symptom
NG
Replace the engine-ECU
13J-22
GDI -Troubleshooting
(Ignition switch: ON)
OK
: 8 - 11 V
<Correct>
<Incorrect>
<Correct>
0.9 - 1.1
Ω
<Incorrect>
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