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2-134
Control System JL4G18-D
Cylinder No.2 Fuel Injector Harness
Connector EN12
1
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
22
21
20
19
18
17
16
15
Next
Check ECM power supply circuit.
Step 7
Yes
Replace ECM.
Step 8
Next
Use scan tool to confirm whether the DTC code is stored again.
Step 9
EC718/EC718RV EC715/EC715RV 10/2009
2
56
55
54
53
52
51
8
7
6
5
42
41
40
39
38
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28
27
26
25
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23
3
4
1
2
14
13
12
11
10
9
FE02-5062b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.2 fuel injector wiring harness
connector EN12.
(c)
Disconnect ECM harness connector EN01.
(d)
Measure resistance between cylinder No.2 fuel injector
wiring harness connector EN12 terminal No.1 and ECM
harness connector terminal No.63. Check whether the circuit
is open. If there is no open circuit, repair the faulty part.
(e)
Measure resistance between cylinder No.2 fuel injector
wiring harness connector EN12 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground. If there
is no short circuit, repair the faulty part.
(f)
Measure voltage between cylinder No.2 fuel injector wiring
harness connector EN12 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.
Test Items
Resistance Between EN12 (1) and EN01 (63)
Resistance Between EN12 (1) and a Reliable
Ground
Voltage Between EN12 (1) and a Reliable
Ground
Execute next step as per normal.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
Repair the faulty part.
No
(a)
Connect scan tool to the datalink connector.
(b)
Turn the ignition switch to "ON" position.
(c)
Clear DTC code.
(d)
Start and run the engine at idle speed to warm up the engine
for at least 5 min.
(e)
Road test the vehicle for at least 10 min.
(f)
Read control system DTC code again to confirm that the
system has no DTC code.
Engine
Standard
Value
Less than 1 Ω
10 kΩ or higher
0 V
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