Step 5
Check and repair cylinder No.4 fuel injector power circuit.
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
EF14
EF24
EF28
EF27
EF26
EF18
EF07
EF06
EF30
EF19
EF20
EF21
EF22
EF23
EF25
EF15
EF16
EF17
EF13
EF12
EF1
1
EF10
EF09
EF08
EF05
EF04
EF03
EF02
EF01
G
1
2
5 3
2
1
Cylinder No.4 Fuel Injector Harness
Connector EO14
FE02-5269b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the fuel injector wiring harness connector EO14.
(c)
Remove the engine main relay.
(d)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.2 and engine
main relay terminal No.3.
(e)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.2 and a reliable
ground.
Test Items
Standard Value
Resistance Between EO14 (2) and Main
Relay Terminal No.3
Less than 1 Ω
Resistance Between EO14 (2) and A
Reliable Ground
10 kΩ or higher
(f)
Install the engine main relay.
(g)
Connect cylinder No.4 fuel injector wiring harness connector
EO14.
Exclude fuel injector power circuit malfunction.
Next
Step 6
Check cylinder No.4 fuel injector control circuit.
2
1
1
17
33
53
54
55
56
57
58
59
60
61
62
63
64
66
67
68
69
70
71
72
73
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
65
Cylinder No.4 Fuel Injector Harness
Connector EO14
ECM Harness Connector EO01
FE02-5270b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.4 fuel injector wiring harness
connector EO14.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.1 and ECM
harness connector terminal No.66. Check whether the circuit
is open. Otherwise, repair the faulty part.
(e)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground.
Otherwise, repair the faulty part.
(f)
Measure voltage between cylinder No.4 fuel injector wiring
harness connector EO14 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. Otherwise,
repair the faulty part.
Test Items
Standard Value
Resistance Between EO14 (1) and EO01
(66)
Less than 1 Ω
2-712
Control System JL4G15-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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