Table of Contents
Advertisement
Engine
Step 5
check the engine coolant temperature sensor signal circuit.
Engine Coolant Temperature Sensor Harness
Connector EO23
1 2 3
ECM Harness Connector EO01
16
15
14
13
12
73
32
31
30
29
28
51
52
50
49
48
47
46
45
44
72
71
70
69
68
67
66
65
64
Check the engine coolant temperature sensor ground circuit.
Step 6
11
10
9
8
7
6
5
4
3
2
1
27
26
25
24
23
22
21
20
19
18
17
43
41
40
36
42
39
38
37
35
34
33
63
62
61
60
59
58
57
56
55
54
53
FE02-5346b
Control System JL4G15-D
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the engine coolant temperature sensor wiring
harness connector EO23.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between engine coolant temperature
sensor wiring harness connector EO23 terminal No.1 and
ECM harness connector terminal No.24. Check whether the
circuit is open.
(e)
Measure resistance between engine coolant temperature
sensor wiring harness connector EO23 terminal No.1 and a
reliable ground. Check whether the circuit is short to ground.
(f)
Measure voltage between engine coolant temperature
sensor wiring harness connector EO23 terminal No.1 and a
reliable ground. Check whether the circuit is short to power
supply.
Test Items
Resistance Between EO23 (1) and EO01
(24)
Resistance Between EO23 (1) and A
Reliable Ground
Voltage Between EO23 (1) and A Reliable
Ground
Go to step 7
Next
EC718/EC718RV EC715/EC715RV 10/2009
2-665
Standard Value
Less than 1 Ω
10 kΩ or higher
0 V
Advertisement
Chapters
Table of Contents
