FUEL SYSTEM <4D5-step
III
> - Troubleshooting
13-24
Code No. 48 GE actuator (in the middle of control sleeve
position sensor inoperative) system
Probable cause
Range of Check
D
Ignition switch: ON
Set Conditions
D
Target value minus actual value is 1 V or more for 1 second
D
Control sleeve position sensor inoperative
D
GE actuator inoperative
D
Control sleeve position sensor open circuit, short
circuit, or connector contact inoperative
D
Engine-ECU inoperative
OK
OK
Check and repair the harness between the
control relay and the injection pump
assembly connector.
GE actuator check (Refer to P.13-62.)
Replace the engine-ECU.
OK
Repair
Check the following connector:
C-41
Check the trouble symptoms.
NG
NG
NG
Check the following connector:
A-131
NG
Repair
OK
Check the trouble symptoms.
NG
NG
Measure at C-41 engine-ECU connector
D
Disconnect the connector and measure at
the harness side.
D
Voltage between 1 and the earth
(Ignition switch: ON)
OK:
9 V or higher
OK
Measure at A-131 injection pump assembly
connector.
D
Disconnect the connector and measure at
the harness side.
D
Voltage between 6 and the earth
(Ignition switch: ON)
OK:
System voltage
Replace injection pump assembly.
Check and repair the harness between the
control relay and the injection pump
assembly connector.
Check the following connector:
C-126
NG
Repair
OK
Check the trouble symptoms.
NG
NG