Geely EC718 2009 Workshop Manual page 220

2-138 Control System JL4G18-D
Step 5 Check and repair cylinder No.3 fuel injector power supply circuit.
Cylinder No.3 Fuel Injector Harness
Connector EN13
1
86 2 J 1
L
87 30 5
85 3
1
K
2 1
I
5 3
5
2
3
1
G
2
Check 3-cylinder fuel injector control circuit.
Step 6
Cylinder No.3 Fuel Injector Harness
Connector EN13
1
ECM Harness Connector EN01
64 63 62
61 60 59 58 57
50 49 48 47 46 45 44 43
36 35 34 33 32 31 30 29
22 21 20 19 18 17 16 15
EC718/EC718RV EC715/EC715RV 10/2009
2
EF28 EF27 EF08
1
G 5 3
2
30
EF01
86 85
F
87
86
E 30 87
87
85
1413 12 11 10
5 3
87
9 8 6 5
7
4 3 2 1
FE02-5067b
2
56 55 54 53 52 51
8 7
6
5
42 41 40 39 38 37
28 27 26 25 24 23
3
4
1
2
14 13 12 11 10 9
FE02-5068b
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect the fuel injector wiring harness connector EN13.
(c) Remove the engine main relay.
(d) Measure resistance between cylinder No.3 fuel injector
wiring harness connector EN13 terminal No.1 and engine
main relay terminal No.3.
(e) Measure resistance between cylinder No.3 fuel injector
wiring harness connector EN13 terminal No.1 and a reliable
ground.
EN13 (1) and Main Relay Terminal No.3
EN13 (1) and a Reliable Ground
(f) Install the engine main relay.
2
3 5 D
1
(g) Connect cylinder No.3 fuel injector wiring harness connector
2
3 5 C
1
EN13.
86
B 30
85 Exclude the fuel injector power supply circuit fault.
86
A 30
85
Next
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect cylinder No.3 fuel injector wiring harness
connector EN13.
(c) Disconnect ECM harness connector EN01.
(d) Measure resistance between cylinder No.3 fuel injector
wiring harness connector EN13 terminal No.1 and ECM
harness connector terminal No.49. Check whether the circuit
is open. If there is no open circuit, repair the faulty part.
(e) Measure resistance between cylinder No.3 fuel injector
wiring harness connector EN13 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground. If there
is no short circuit, repair the faulty part.
(f) Measure voltage between cylinder No.3 fuel injector wiring
harness connector EN13 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.
Resistance Between EN13 (1) and EN01 (49)
Resistance Between EN13 (1) and a Reliable
Ground
Test Items
Go to step 9
Test Items
Engine
Standard Value
Less than 1 Ω
10 kΩ or higher
Standard Value
Less than 1 Ω
10 kΩ or higher