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Engine
Post-catalytic Oxygen Sensor Harness
Connector EO03
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
Next
Step 13
Check ECM power supply circuit.
Yes
Replace ECM.
Step 14
Next
Use scan tool to confirm whether the DTC code is stored again.
Step 15
B
C
D
11
10
9
8
7
6
5
4
3
2
1
27
26
25
24
23
22
21
20
19
18
17
43
42
41
40
39
38
37
36
35
34
33
63
62
61
60
59
58
57
56
55
54
53
FE02-5357b
Control System JL4G15-D
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the oxygen sensor wiring harness connector
EO03.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between oxygen sensor wiring harness
connector EO03 terminal A and ECM harness connector
terminal No.55. Check whether the circuit is open. otherwise,
repair the faulty part.
(e)
Measure resistance between oxygen sensor wiring harness
connector EO03 terminal A and a reliable ground. Check
whether the circuit is short to ground. otherwise, repair the
faulty part.
(f)
Measure voltage between oxygen sensor wiring harness
connector EO03 terminal A and a reliable ground. Check
whether the circuit is short to power supply. otherwise, repair
the faulty part.
Test Items
Resistance between EO03 (A) and EO01 (55)
Resistance between EO03 (A) and a reliable
ground
Voltage between EO03 (A) 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)
Replace ECM. Refer to
Replacement.
(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.
EC718/EC718RV EC715/EC715RV 10/2009
Standard Value
Less than 1 Ω
10 kΩ or higher
0 V
2.2.8.8 Engine Control Module
Learn.
2-685
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