Geely Emgrand X7. Manual part — 228
Geely Emgrand X7. Manual part - 228
4 Troubleshooting
5. Maintenance
guide
:
Refer to 2.12.8.7 Replacement of Clutch Switch to replace the Clutch switch.
No
Refer to 2.12.8.7 ”Replacement of Clutch
Switch” to replace the clutch switch.
Yes
911
2.12.7.57 Crankshaft can rotate normally, but engine can't be started.
Notes:
Before carrying out this step, make sure the engine oil complies with the manufacturer
requirements, the fuel tank has sufficient fuel and battery has enough power for starting engine.
Observe the fault diagnosis tester data list, analyze the accuracy of the data, as these will
facilitate diagnostic.
Diagnostic Steps:
A. Connect fault diagnosis tester.
B. Rotated ignition switch to ON position.
C. Scan ECM DTC codes.
D. Refer to 2.12.7.14 DTC Code Index to repair any DTC code faulty part related to fuel system.
E. Clear ECM DTC code.
Start the engine, fault solved?
2
Inspect fuel pump relay.
A. Connect fault diagnosis tester.
B. Rotated ignition switch to ON position .
C. Choose fault diagnosis tester Action Test then fuel pump relay to drive the fuel pump relay.
Is fuel pump relay working properly?
A. Refer to 2.3.2 Description and Operation and 2.3.3 System Operating Principle in the Fuel
System.
B. Replace the pump relay.
C. Inspect fuel pump relay circuits and repair the faulty part. Start the engine,fault solved?
1
Scan ECM for DTC codes.
3
Replace the fuel pump relay.
Yes
The system is normal.
No
Yes
Go to step 5
No
Yes
The system is normal.
No
912
A. rotated ignition switch to OFF position .
B. Disconnect fuel pump harness connector SO26.
C. Connect fault diagnosis tester.
D. Turn the ignition switch to the ON position.
E. Select Fuel Pump Relay in Functional Testing of the diagnostic test er to drive the fuel
pump relay.
F. Use a test lamp to connect SO26 terminals No. 3 and 4.
Is test lamp lit properly?
6
Repair the fuel pump circuit.
A. Turn the ignition switch to the ON position.
B. Inspect fuel pump working circuit, repair the pump SO26 terminals No.3 and fuel pump relay
terminal No.5 open circuit fault.
Start the engine, fault solved?
7
Inspect the fuel pressure
A. rotated ignition switch to OFF position .
B. Install fuel pressure gage, connect fault diagnosis tester.
C. Rotated ignition switch to ON position .
D. Connect the diagnostic tester and select Fuel Pump Relay in Functional Testing.
Compel to drive the fuel pump relay.
Standard Fuel Pressure Value: 350 kPa
Is fuel pressure normal?
8
Replace the fuel pump assembly.
4
Inspect the fuel pump circuit.
Yes
Go to step 8
No
Yes
The system is normal.
No
Yes
Go to step 7
No
913
A. Turn off the ignition switch and remove the ignition key.
B. Refer to 2.3.6.3 Replacement of Fuel Pump Assembly to remove the fuel pump assembly.
Start the engine, fault solved?
9
Inspect (repair) fuel injectors.
A. Refer to the DTC code 2.12.7.32 DTC P0270 P0271 for the inspect (repair) procedures. If
necessary, replace the faulty fuel injectors.
Start the engine, fault solved?
10
Inspect the ignition coil.
A. rotated ignition switch to OFF position .
B. Dismantle the ignition coil harness connector and connect an intact spark plug with well
grounding.
C. Start
the
engine.
Is spark plug ignition normal?
11
Replace the ignition coil,
A. Turn off the ignition switch and remove the ignition key.
B. Refer to 2.10.7.3 Replacement of Ignition Coil to replace the ignition coil.
Start the engine, fault solved?
12
Inspect crankshaft position sensor and circuit.
A. Refer to 2.12.7.35 DTC P0335 P0336 to inspect crankshaft position sensor.
B. Measure crankshaft position sensor resistance with a multimeter.
Yes
The system is normal.
No
Yes
Go to step 12
No
Yes
The system is normal.
No
Yes
The system is normal.
No
914
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