2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine 5.CHECK ENGINE CYLINDER COMPRESSION
• Perform a compression test on the engine.
Is engine compression correct?
Ye s>>Verify test results. If OK, see Diagnostic Test List to repair any additional symptoms.
No
>>Check for cause.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03–546Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Engine Will Not Crank
The following conditions apply to this symptom:
•The engine will not crank.
1.PRELIMINARY CHECKS
• Carry out the following preliminary vehicle inspection:
Fuel quality
Battery connections
Starter relay connections
Manual transmission clutch fully depressed
Engine immobilizer activated
Fuses/Fuse links
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair as necessary.
Verify the symptom no longer exists.
•
2.LISTEN FOR STARTER RELAY CLICKING
• Attempt to start the engine.
Is a clicking sound heard from the starter relay when the ignition key is turned to START?
Ye s>>Go to the next step.
No
>>Go to step 5.
3.CHECK STARTING SYSTEM
• Check the starter, starter ground, starter relay cable to starter and battery.
Is a fault indicated?
Ye s>>Repair as necessary.
No
>>Go to the next step.
4.CHECK OPERATION OF OTHER ELECTRICAL ACCESSORIES
• Check all accessories.
Do any other electrical accessories work?
Ye s>>Go to the next step.
No
>>Check the charging system.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03
03–547Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 5.CHECK DTC
• Turn the ignition switch on.
• With the scan tool X-431, read the DTC.
Are there any DTCs present?
Ye s>>Check for cause.
No
>>Go to the next step.
6.CHECK STARTING SYSTEM PRIMARY CIRCUITS
• Check the starting system primary circuits as follows:
Starter relay
Ignition switch
Are components/systems OK?
Ye s>>Ensure customer’s concern has been resolved.
No
>>Repair as necessary.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03–548Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Hard Start / Long Crank / Erratic Start / Erratic Crank
The following conditions apply to this symptom:
•The engine cranks for an extended period of time.
• The engine starts hard during a long cranking time.
1.PRELIMINARY CHECKS
• Confirm that the correct starting procedure was used by the customer before proceeding with diagnosis.
• Carry out the following preliminary checks:
Vacuum leaks
Fuel quality (concerns such as correct octane, contamination, winter/summer blend)
Intake air system (tubes)
Air cleaner (restrictions)
Battery condition and starter current draw.
Are all checks OK?
Ye s>>Go to the next step.
No
>>Repair as necessary.
Verify the symptom no longer exists.
2.CHECK ECM DTC
• With scan tool X-431, select view DTC and data stream in ECM.
Are there any DTCs present?
Ye s>>See the Diagnostic Trouble Code (DTC) List.
Go to the specific diagnostic test to troubleshoot the DTC.
No
>>Go to the next step.
3.CHECK SECONDARY IGNITION SYSTEM
• Perform the following to test the secondary ignition system:
Disconnect the injector fuse.
Remove any of the 4 spark plugs.
Connect the spark plug to spark plug wire.
Ground the spark plug on the cylinder block.
Crank the engine to test the secondary ignition system with the spark plugs removed.
Is a strong blue spark visible at each spark plug while cranking the engine?
Ye s>>Go to the next step.
No
>>Check Camshaft Position (CMP) sensor signal at ECM.
If CMP sensor is OK, check the following:
Crankshaft Position (CKP) sensor malfunction
Faulty spark plug wires
Faulty spark plugs
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03
03–549Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.CHECK FUEL SYSTEM PRESSURE
• Release the fuel system pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
• Check fuel system pressure (See Fuel Pressure Test in Section 04 Fuel Delivery).
Is fuel pressure correct?
Ye s>>Go to the next step.
No
>>If the fuel pressure is greater than 400 kPa (4.0 bar):
Replace the fuel pressure regulator.
If the fuel pressure is less than 400 kPa (4.0 bar):
Check the fuel supply system for restrictions or leaks.
If no problems, repair or replace fuel filter, pressure regulator or fuel pump assembly.
5.CHECK EXHAUST SYSTEM
• Check the exhaust system for restrictions.
Is there a restriction in the exhaust system?
Ye s>>Repair as necessary.
No
>>Go to the next step.
6.CHECK ENGINE OVERHEATING
• Is the engine overheating (hot start concern only)?
For hot start concerns, does engine appear to be overheating?
Ye s>>Repair the engine cooling system.
No
>>Go to the next step.
7.CHECK POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM
• Remove the PCV valve and shake it.
Does PCV valve rattle?
Ye s>>Go to the next step.
No
>>Replace the PCV valve.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03–550Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 8.CHECK EVAPORATIVE EMISSIONS (EVAP) SYSTEM
• Disconnect the canister control valve (1) hose.
• Place a stiff piece of paper over the hose end and
start the engine.
Does vacuum hold the paper?
Ye s>>Check for a vacuum leak in EVAP system
(refer to EVAP system) and refer to EVAP control cir-
cuit relative DTC.
No
>>Go to the next step.
9.CHECK INTAKE AIR SYSTEM
• Check for MAP/MAF sensor.
Is there any contamination?
Ye s>>Install a new MAF/IAT or MAP/IAT sensor.
No
>>See Diagnostic Help for additional information.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
VISMD030007
03
03–551Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Fast Idle
The following conditions apply to this symptom:
•The engine idles at a higher than recommended speed.
1.VERIFY ENGINE OPERATES AT NORMAL OPERATING TEMPERATURE
• Check the engine operating temperature.
Does the engine appear to be either overheating or not reaching normal operating temperature?
Ye s>>Repair the engine cooling system.
No
>>Go to the next step.
2.PRELIMINARY CHECKS
• Carry out the following preliminary checks:
Vacuum leaks
Throttle plate and linkage
Intake air tube (leaks)
Correct sealing of intake manifold and components attached to intake air tube
Are all checks OK?
Ye s>>Go to the next step.
No
>>Repair as necessary.
Verify the symptom no longer exists.
3.CHECK ECM DTC
• Turn the ignition switch on.
• With the scan tool X-431, select view DTC and data stream in ECM.
Are there any DTCs present?
Ye s>>See the Diagnostic Trouble Code (DTC) List.
Go to the specific diagnostic test to troubleshoot the DTC.
No
>>See Diagnostic Help for additional information.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03–552Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Lack / Loss Of Power
The following conditions apply to this symptom:
•The engine has poor performance.
• The engine has poor acceleration.
1.PRELIMINARY CHECKS
• Verify symptom is reported under normal driving conditions without excessive engine/vehicle load conditions.
• Carry out the following preliminary checks:
Fuel quality
Vacuum lines (check for damage and correct routing)
Intake air system (check for damaged tubes and dirty air filter)
Vehicle wiring (disconnected, corroded/damaged)
Throttle linkage
Radiator (obstructed)
Transaxle
NOTE :
Be aware of the over RPM limiting functions of the ECM.
Are all checks OK?
Ye s>>Go to the next step.
No
>>Repair as necessary.
Verify the symptom no longer exists.
2.CHECK ECM DTC
• Turn ignition switch on.
• With the scan tool X-431, read the DTC.
Do any DTC displayed on the scan tool?
Ye s>>See the Diagnostic Trouble Code (DTC) List.
Go to the specific diagnostic test to troubleshoot the DTC.
No
>>Go to the next step.
3.CHECK FUEL SYSTEM PRESSURE
• Release the fuel system pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
• Check fuel system pressure (See Fuel Pressure Test in Section 04 Fuel Delivery).
Is fuel pressure correct?
Ye s>>Go to the next step.
No
>>If the fuel pressure is greater than 400 kPa (4.0 bar):
Replace the fuel pressure regulator.
If the fuel pressure is less than 400 kPa (4.0 bar):
Check the fuel supply system for restrictions or leaks.
If no problems, repair or replace fuel filter, pressure regulator or fuel pump assembly.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03
03–553Chery Automobile Co., Ltd.