ENGINE CONTROL SYSTEM (J08E)
4–1022
4
Inspect for
short-circuit of
the injector
wire harness
(between
injector linked-
up connector
and injector
harness con-
nector)
Disconnect the injector harness
connector and measure the resis-
tance between each terminal in
the injector linked-up connector
(engine side) and ground.
<Tester connections>
Injector linked-up connector
(engine side)
–
Ground
#1 injector:
11
–
Ground
#2 injector:
3
–
Ground
#3 injector:
6
–
Ground
<Standard values>
The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Go to step 5.
Repair or
replace the
harness.
Perform "After-
inspection
work" of
INFORMA-
TION section.
5
Inspect dis-
connection of
injector wire
harness
Measure the resistance between
the terminals of the #1, #2 and #3
injector harness connector.
<Tester connections>
Injector harness connector termi-
nals
#1 IJ1+
–
IJ1-
#2 IJ2+
–
IJ2-
#3 IJ3+
–
IJ3-
<Standard values>
20
C {68
F}: 0.37
–
0.57
The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Go to step 7.
Go to step 6.
6
Inspect the
injector unit
Measure the resistance between
the #1
–
#3 injector terminals and
the injector bodies.
<Tester connections>
Between injector terminal and
body
<Standard values>
10 M
or more
The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Go to step 7.
Replace the
injector.
Perform "After-
inspection
work" of
INFORMA-
TION section.
7
Check the
DTC detected
(Engine ECU)
[Hino-DX]
Perform engine warm-up (engine
coolant temperature: 60
C {140
F} or more), and check if P2146
has been detected in [Engine].
DTC P2146
has been
detected: Go
to YES.
No DTC has
been detected:
Go to NO.
Replace the
engine ECU.
Perform "After-
inspection
work" of
INFORMA-
TION section.
Procedure
completed.
Perform "After-
inspection
work" of
INFORMA-
TION section.
DTC: P2146
Fuel injector driver circuit 1 - circuit
(circuit open)
Inspection procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No
Содержание 238
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Страница 215: ...ENGINE CONTROL SYSTEM J08E 4 992 Malfunction of sensor 2 Malfunction of engine ECU ...
Страница 301: ...ENGINE CONTROL SYSTEM J08E 4 1078 8 Estimated failure factors Malfunction of engine ECU ...
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