Step 5
Check and repair cylinder No.1 fuel injector power supply circuit.
G
1
2
5 3
1413 12 1110
5
1
2
3
4
6
7
8
9
J
L
K
I
G
D
C
B
E
F
A
86
86
30
87
85
86
86
87
87
87
30
30
30
85
85
85
2
2
3
3
5
5
1
1
1
2
5 3
1
2
5 3
86
87
30
1
1
2
5
3
2
5
3
85
EF01
EF21
EF18
EF25
EF20
EF29
EF06
EF02
EF30
EF17
EF19
EF23
EF22
EF26
EF24
EF08
EF27
EF28
EF05
EF07
EF16
EF04
EF03
EF15
EF12
EF10
EF1
1
EF09
EF13
EF14
EF32
EF31
1
2
Cylinder No.1 Fuel Injector Harness
Connector EN11
FE02-5055b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the fuel injector wiring harness connector EN11.
(c)
Remove the engine main relay.
(d)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EN11 terminal No.1 and engine
main relay terminal No.3.
(e)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EN11 terminal No.1 and a reliable
ground.
Test Items
Standard Value
EN11 (1) and Main Relay Terminal No.3
Less than 1 Ω
EN11 (1) and a Reliable Ground
10 kΩ or higher
(f)
Install the engine main relay.
(g)
Connect cylinder No.1 fuel injector wiring harness connector
EN11.
Exclude the fuel injector power supply circuit fault.
Next
Step 6
Check cylinder No.1 fuel injector control circuit.
1
3
5
7
8
6
4
2
9
10
11
12
13
23
24
25
26
27
28
29
30
37
51
52
53
54
55
56
57
58
59
60
61
62
63
64
38
39
40
41
42
43
44
45
46
47
48
49
50
31
32
33
34
35
36
14
15
16
17
18
19
20
21
22
ECM Harness Connector EN01
1
2
Cylinder No.1 Fuel Injector Harness
Connector EN11
FE02-5056b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.1 fuel injector wiring harness
connector EN11.
(c)
Disconnect ECM harness connector EN01.
(d)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EN11 terminal No.1 and ECM
harness connector terminal No.50. Check whether the circuit
is open. If there is no open circuit, repair the faulty part.
(e)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EN11 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground. If there
is no short circuit, repair the faulty part.
(f)
Measure voltage between cylinder No.1 fuel injector wiring
harness connector EN11 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.
Test Items
Standard Value
Resistance Between EN11 (1) and EN01 (50)
Less than 1 Ω
Resistance Between EN11 (1) and a Reliable
Ground
10 kΩ or higher
Engine
Control System JL4G18-D
2-129
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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