Geely EC718, EC718RV, EC715, EC715RV. Manual part — 236
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 236
2.20.3 Schematic
2.20.3.1 Schematic
Crankshaft Position Sensor
Camshaft Position Sensor
Knock Sensor
Engine Control Module
Ignition Coil
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Engine
Ignition System JL4G15-D
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01
MAIN
B
A
C
COLA
COLB
EO01
EO01
1
17
IG1 Relay
To Ignition Switch
1,4 Cylinder Ignition Coil
2,3 Cylinder Ignition Coil
Engine
Control
Module
Battery
FE02-9101b
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Ignition System JL4G15-D
Engine
2.20.4 Diagnostic Information and Procedures
2.20.4.1 Spark Plug No Arcing
Note
Before carry out this diagnostic procedure, make sure that the engine Anti-theft locking system is not activated and
working properly.
Note
During this test, it is prohibited to connect the high-voltage damping line to ground, as this may damage the ignition
coil or the engine control module. The correct approach is to connect spark plug one end to a known good high-voltage
damping line, the other end to a reliable ground.
Step 1
Instruments, wiper and other electrical accessories work properly?
No
Ignition relay IG1 is not working properly.
Refer to
Yes
Step 2
Check the ignition coil working power supply.
FE02-9102b
A
C B
Ignition Coil Harness Connector EO19
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the ignition coil harness connector EO19.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between ignition coil harness connector
EO19 terminal B and a reliable ground.
Standard Voltage: 11-14 V
Voltage normal?
No
Ignition relay IG1 terminal No.30 circuit is
open.
Yes
Step 3
Measure the ignition coil primary resistance.
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the ignition coil harness connector EO19.
(c)
Measure resistance between ignition coil terminal B and A or
between terminal B and C.
Standard Resistance Value: 0.45-0.55 Ω
Is resistance normal?
No
Replace the ignition coil.
Engine
Ignition System JL4G15-D
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Yes
Step 4
Measure the ignition coil secondary resistance.
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the ignition coil harness connector EO19.
(c)
Measure resistance between ignition coil secondary
terminals.
Standard Resistance Value: 8.86-10.82 kΩ
Is resistance normal?
No
Replace the ignition coil.
Yes
Step 5
Check the ignition coil control circuit.
B
C
A
1
17
33
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Ignition Coil Harness Connector EO19
ECM Harness Connector EO01
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(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect ECM harness connector EO01.
(c)
Disconnect the ignition coil harness connector EO19.
(d)
With a multimeter, measure resistance between ECM
harness connector EO01 terminal No.1 and ignition coil
harness connector EO19 terminal A, and resistance between
EO01 terminal No.17 and EO19 terminal C.
(e)
With a multimeter, measure resistance between ignition coil
harness connector EO19 terminal A, C and a reliable ground.
Check whether the circuit is short to ground.
(f)
With a multimeter, measure voltage between ignition coil
harness connector EO19 terminal A, C and a reliable ground.
Check whether the circuit is short to power supply.
Test Items
Standard Value
EO01 (1)-EO19 (A) / EO01 (17)-EO19
(C) Resistance
0 Ω
Resistance Between EO19 (A, C) and
A Reliable Ground
10 kΩ or higher
Voltage Between EO19 (A, C) and A
Reliable Ground
0 V
All normal?
No
Repair the circuit fault.
Yes
Note
Each time the ignition switch can not stay at the "ST" position longer than 5 s, otherwise it will damage the starter motor.
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Ignition System JL4G15-D
Engine
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