1
2
3
Cooling Fan Harness Connector CA16
FE02-7802b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cooling fan wiring harness connector CA16.
(c)
Measure resistance between cooling fan wiring harness
connector CA16 terminal No.3 and a reliable ground.
Standard Resistance: Less than 1 Ω
Is the resistance specified Value?
No
CA16 terminal No.3 poor connection to
ground. inspect and repair faulty parts.
Yes
Step 3
Replace the cooling fan assembly.
Step 4
Use scan tool "Action Test" to drive the fan 2. Does the High-Speed relay work?
No
Yes
Step 5
Check the high-speed relay A terminal No.87 input power supply.
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
A
86
87
30
85
FE02-7803b
(a)
Turn the ignition switch to "OFF" position.
(b)
Remove the high-speed cooling fan relay A.
(c)
Measure voltage between high-speed cooling fan relay A
terminal No.87 and a reliable ground.
Standard Voltage: 11-14 V
Is the voltage specified Value?
No
Relay A terminal No.87 circuit is faulty.
inspect and repair the faulty parts
Yes
Step 6
Check the fan high-speed relay A wiring harness and cooling fan harness connector CA16 wiring harness..
2-466
Cooling System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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