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2-476
Cooling System JL4G18-D
Yes
Step 6
Check high-speed relay A control circuit.
86
2
J
1
87
L
30
5
85
3
1
K
2
1
I
5 3
5
2
3
87
ECM Harness Connector EN01
64
63
62
61
60
59
58
57
50
49
48
47
46
45
44
43
36
35
34
33
32
31
30
29
17
16
15
22
21
20
19
18
Yes
Check ECM circuit.
Step 7
Yes
Replace ECM.
Step 8
Next
Diagnostic completed.
Step 9
EC718/EC718RV EC715/EC715RV 10/2009
EF28
EF27
EF08
1
5 3
G
2
30
EF01
3
86
F
85
87
3
86
86
87
87
E
30
86
85
85
30
A
1413 12 11 10
86
87
9
8
6
5
7
85
85
4
3
2
1
56
55
54
53
52
51
8
7
6
5
42
41
40
39
38
37
28
27
26
25
24
23
3
4
2
1
14
13
12
11
10
9
FE02-7806b
(a)
Measure resistance between relay terminal No.87 and
terminal No.30.
Standard Resistance: 10 kΩ or higher
Confirm whether the measured resistance is normal.
No
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect ECM harness connector EN01.
(c)
Remove high-speed cooling fan relay A.
(d)
Test continuity between high-speed cooling fan relay A
2
5
D
terminal No.86 and ECM harness connector EN01 terminal
1
2
5
C
No.52.
1
B
(e)
Measure resistance between high-speed cooling fan relay A
30
terminal No.86 and a reliable ground. Check whether the
30
A
circuit is short to ground.
Standard Value:
Test Items
Relay A (86)-EN01 (52)
Relay A (86) - Reliable Ground
Is the measured values specified value?
No
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Replace the relay.
Specified Value
Less than 1 Ω
10 kΩ or higher
Circuit between relay A terminal No.86 and
EN01 terminal No.52 is short to ground.
Repair the faulty part.
Engine
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