Geely EC718, EC718RV, EC715, EC715RV. Manual part — 201
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 201
2. Run the engine for no longer than 5 s.
Step 9
Use a properly working spark plug and check whether there is misfire cylinder arcing.
(a)
Replace the installed spark plug with a spark plug that works
properly.
(b)
Test spark plug.
(c)
Remove misfire cylinder ignition wires.
(d)
Disconnect all fuel injector cylinder connectors.
(e)
Install the ignition wires to the spark plug.
(f)
Run the engine (the engine running time no longer than 5 s)
and check the arcing.
(g)
Reconnect all cylinder fuel injector connectors.
(h)
Install the ignition wires.
Is spark plug arcing normal?
No
Check the ignition coil and ignition wire. Go to
step 17
Yes
Replace the spark plug. Refer to
Step 10
Check ECM control connector terminal voltage of the misfire cylinder fuel injector.
FE02-5273b
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
ECM Harness Connector EO01
(a)
Turn the ignition switch to the "ON" position.
(b)
Remove ECM harness connector EO01.
(c)
Measure ECM harness connector EN01 terminal voltage
according to the following table.
Connector Terminal
Standard Value
EO01 (65)
9-14 V
EO01 (63)
EO01 (64)
EO01 (66)
Is voltage the specified value?
No
Check the fuel injector circuit. Refer to
Yes
Step 11
Check the misfire cylinder valve gap.
(a)
Refer to the "Engine Mechanical System" in
the
, Is valve clearance
normal?
No
Adjust the valve clearance. Go to step 17
Engine
Control System JL4G15-D
2-719
Yes
Step 12
Check valve timing system.
(a)
Refer to the "Engine Mechanical System" in the
No
Adjust the valve timing. Go to step 17
Yes
Step 13
Check the fuel pressure.
(a)
, Is fuel pressure normal?
No
Check fuel system: fuel pump, fuel filter, fuel
pipe circuit and fuel pressure regulator.
Yes
Step 14
Check whether the data in the data stream table is normal.
(a)
Check intake air pressure sensor data.
(b)
Check engine coolant temperature sensor data.
(c)
Check throttle position sensor.
Are these components normal?
No
Replace the damaged components. Go to
step 17
Yes
Step 15
Check ECM power supply circuit.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Repair the faulty part.
Yes
Step 16
Replace ECM.
(a)
Carry out crankshaft self learn after ECM replacement. Refer
to
Crankshaft Position Sensor (CKP) Learn
Next
Step 17
Use scan tool to confirm whether the DTC code is stored again.
(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 10 min.
2-720
Control System JL4G15-D
Engine
(f)
Read control system DTC code again to confirm that the
system has no DTC code.
No
Intermittent Fault. Refer to
Yes
Step 18
Diagnostic completed.
5. Repair Instructions:
Replace the spark plug. Refer to
2.12.7.34 DTC P0324 P0325
1. DTC Descriptor:
DTC
P0324
Knock Control System Malfunction
DTC
P0325
Knock Sensor Malfunction
KS sensor to ECM feedback signal helps ECM control the ignition timing to achieve the optimal operation and the ignition system
to achieve the best performance, as well as to prevent damage to the engine by a potential knock. KS sensor is located below the
intake manifold on the cylinder. KS sensor voltage changes with the AC signal generated by the vibration with running engine. Engine
control module adjusts spark timing according to KS sensor signal amplitude and frequency.
ECM receives signals from KS sensor harness connector EN08 terminal No.1 and 2 through ECM harness connector EN01 terminal
No.12 and 28.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC
(Control Strategy)
Fault Locations
P0324
Shock Control System
Malfunction
1. Engine speed is higher than 1,600 rpm.
2. Certain Load Conditions.
3. Sensor signal circuit is short to ground.
1. Sensor Circuit
2. Sensor
3. ECM
P0325
Knock Sensor Malfunction
1. Engine speed is higher than 1,600 rpm.
2. Certain Load Conditions.
3. Sensor Signal Circuit Open.
Engine
Control System JL4G15-D
2-721
3. Schematic:
1
2
EO01
EO01
12
28
KNOCK HI
KNOCK LO
Knock Sensor
Engine
Control
Module
FE02-5274b
4. Diagnostic Steps:
Note
Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.
Step 1
Initial Inspection
(a)
Check whether there is KS sensor physical damage.
(b)
Check whether KS sensor is installed correctly. Torque is set
too tight or too loose will trigger DTC codes.
(c)
Check KS sensor installation surface whether there are
glitches, casting flash and foreign matter.
(d)
Knock sensor must be kept away from hoses, brackets and
engine wires.
Are above mentioned parts normal?
No
Repair the faulty part. Go to step 9
Yes
Step 2
Read the engine data (engine speed) on the scan tool.
(a)
Connect scan tool to datalink connector.
2-722
Control System JL4G15-D
Engine
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст