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
FE02-5302b
(a)
Install the main relay.
(b)
Connect ECM harness connector EO35 terminal No.62 to
ground.
(c)
Measure voltage between main relay terminal No.3 and a
reliable ground.
Standard voltage: 11-14 V
Voltage normal?
No
Replace the main relay. Go to step 10
Yes
Step 7
Test continuity between main relay and ECM harness connector.
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
1
17
33
53
54
55
56
57
58
59
60
61
62
63
64
65
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
ECM Harness Connector EO35
FE02-5303b
(a)
Remove the main relay.
(b)
Measure resistance between main relay terminal No.3 and
ECM harness connector EO35 terminals No. 6,22.
Standard Resistance: Less than 1 Ω
Resistance normal?
No
Repair the circuit between main relay terminal
No.3 and ECM harness connector EO35
terminals No. 6,22.
Step 8
Check ECM power supply circuit.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Repair ECM Power Supply Circuits.
Yes
Step 9
Replace ECM.
2-770
Control System JL4G15-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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