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Engine
Pre-catalytic Oxygen Sensor Harness
Connector EO02
A
ECM Harness Connector EO01
16
15
14
13
12
73
32
31
30
29
28
52
51
50
49
48
47
46
45
44
72
71
70
69
68
67
66
65
64
Yes
Step 5
Check ECM working circuit.
Yes
Step 6
Replace ECM. Refer to
Next
Step 7
Use scan tool to confirm whether the DTC code is stored again.
B
C
D
11
10
9
8
7
6
5
4
3
2
27
26
25
24
23
22
21
20
19
18
43
42
41
40
39
38
37
36
35
34
63
62
61
60
59
58
57
56
55
54
FE02-5353b
2.2.8.8 Engine Control Module
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect oxygen sensor wiring harness connector EO02.
(c)
Disconnect ECM harness connector EO01.
(d)
Test Continuity between pre-catalytic oxygen sensor wiring
harness connector EO02 terminal C and ECM harness
connector EO01 terminal No.14.
Standard Resistance: Less than 1 Ω
(e)
Connect ECM harness connector EO01.
(f)
Connect pre-catalytic oxygen sensor wiring harness
connector EO02.
Is the resistance specified value?
No
1
17
33
53
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Replacement.
(a)
Replace ECM.
(b)
Carry out crankshaft position sensor self learn. Refer to
2.12.7.11 Crankshaft Position Sensor (CKP)
(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 5 min.
(f)
Read control system DTC code again to confirm that the
system has no DTC code.
Control System JL4G15-D
ECM control circuit malfunction
Repair the faulty part.
EC718/EC718RV EC715/EC715RV 10/2009
2-679
Learn.
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