Yes
No
Step 8
Repair the circuit fault between electronic anti-theft wiring harness connector coil and engine anti-theft
system control module wiring harness connector.
(a)
Repair the open circuit between the anti-theft coil harness
connector IP21 terminal No.1 and engine anti-theft system
control module wiring harness connector IP26 terminal No.1.
(b)
Repair the open circuit between the anti-theft coil harness
connector IP21 terminal No.4 and engine anti-theft system
control module wiring harness connector IP26 terminal No.2.
Can the vehicle start as per normal?
Yes
System normal
No
Step 9
Check the serial communication circuit between the engine anti-theft system control module and engine
control module.
1
3
5
7
8
6
4
2
Engine Anti-Theft Control Unit 1 Harness
Connector IP25
1
3
5
7
8
6
4
2
9
10
11
12
13
23
24
25
26
27
28
29
30
37
51
52
53
54
55
56
57
58
59
60
61
62
63
64
38
39
40
41
42
43
44
45
46
47
48
49
50
31
32
33
34
35
36
14
15
16
17
18
19
20
21
22
ECM Harness Connector EN01
FE02-6608b
(a)
Check the serial communication circuit resistance between
engine anti-theft system control module connector IP25
terminal No.5 and the engine control module connector EN01
terminal No.23 to determine the circuit continuity.
Standard Resistance Value: Less than 1 Ω
(b)
Check the serial communication circuit resistance between
engine anti-theft system control module connector IP25
terminal No.8 and the engine control module connector EN01
terminal No.15 to determine the circuit continuity.
Standard Resistance Value: Less than 1 Ω
Is the resistance standard?
Yes
Intermittent Fault. Refer to
No
Step 10
Repair the serial communication circuit between engine control module anti-theft system and engine control
module.
(a)
Repair the serial communication open circuit between engine
anti-theft system control module connector IP25 terminal No.
Engine
Engine Anti-theft System JL4G18-D
2-291
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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