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
1
2
3
Cooling Fan Harness Connector CA16
FE02-7804b
(a)
Turn the ignition switch to "OFF" position.
(b)
Remove the high-speed cooling fan relay.
(c)
Disconnect the cooling fan wiring harness connector CA16.
(d)
Test the continuity between the high-speed cooling fan relay
A terminal No.30 and the cooling fan wiring harness
connector CA16 terminal No.2.
(e)
Measure resistance between the high-speed cooling fan
relay A terminal No.30 and a reliable ground. check whether
there is a short to ground circuit.
Standard Value:
Test Items
Specified Value
Relay A (30)-CA16 (2)
Less than 1 Ω
Resistance Between Relay A (30) and
A Reliable Ground
10 kΩ or higher
Is the measured value specified value?
No
Circuit between the relay terminal No.30 and
the cooling fan wiring harness connector
CA16 terminal No.2 is fault. check and Repair
the faulty part.
Yes
Step 7
Replace the high-speed cooling fan relay A. Confirm the fault has been fixed.
Step 8
Check high-speed relay A coil 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
FE02-7805b
(a)
Turn the ignition switch to "OFF" position.
(b)
Remove the high-speed cooling fan relay A.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between high-speed cooling fan relay 85
terminal A and a reliable ground.
Standard Voltage: 11-14 V
Is the voltage specified value?
No
Circuit between relay 85 terminals and the
main relay terminal No.3 is open.
Yes
Step 9
Check the high-speed relay A control circuit.
Engine
Cooling System JL4G18-D
2-467
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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