2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine Low Idle / Stalls During Deceleration
The following conditions apply to this symptom:
•Engine stops unexpectedly at beginning of deceleration or recovery from deceleration.
1.PRELIMINARY CHECKS
• Carry out the following preliminary checks:
Vacuum lines (routing, leaks)
Intake air tubes
Wiring connections
Are all checks OK?
Ye s>>Go to the next step.
No
>>Repair as necessary.
Verify the symptom no longer exists.
2.CHECK FOR ROUGH OR STALL AT IDLE
• Check for rough idle or stall at idle.
NOTE :
Confirm that proper vehicle maintenance has been performed before continuing with engine diagnosis.
• Inspect the following components:
Clean the carbon deposit on intake and exhaust valves
Valve stem
Spark plugs and combustion chamber
Does the engine idle rough?
Ye s>>Repair as necessary.
No
>>Go to the next step.
3.CHECK ECM DTC
• Turn the ignition switch on.
• With the scan tool X-431, read the DTC.
Are there any DTCs present?
Ye s>>Repair as necessary.
No
>>Go to the next step.
4.CHECK THE ELECTRONIC THROTTLE CONTROL (ETC) ACTUATOR
• Start engine and let idle.
• Disconnect ETC actuator connector and check for RPM drop or engine stall.
Did RPM drop or engine stall when the ETC connector was disconnected?
Ye s>>Connect ETC actuator connector.
Go to the next step.
No
>>Repair as necessary.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03–562Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 5.CHECK CLUTCH OPERATION CONDITION
• Check clutch operation condition.
Is the transaxle clutch operation normal?
Ye s>>Go to the next step.
No
>>Repair as necessary.
6.CHECK A/C SYSTEM OPERATION
• Start engine.
• Cycle A/C switch from on to off (verify A/C clutch engages condition).
• Check the A/C system operation.
Does the A/C system operate normally?
Ye s>>Go to the next step.
No
>>Repair as necessary.
7.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.
8.CHECK FOR BASE ENGINE CONCERNS
• Check for base engine concerns (such as improper compression, worn camshaft/valve train, gasket leaks).
Is a fault indicated?
Ye s>>Repair as necessary.
No
>>See Diagnostic Help for additional information.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03
03–563Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Idle Speed Slow Return To Normal Idle
The following conditions apply to this symptom:
•Slow return to idle.
1.PRELIMINARY CHECKS
• Carry out the following preliminary checks:
Vacuum leaks
Intake air system
Throttle body
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 the ignition switch on.
• With the scan tool X-431, read the DTC.
Are there any DTCs present?
Ye s>>Repair as necessary.
No
>>Go to the next step.
3.CHECK PCV VALVE
• Remove Positive Crankcase Ventilation (PCV) valve and shake it.
Does PCV valve rattle?
Ye s>>Install PCV valve, go to the next step.
No
>>Replace the PCV valve.
4.CHECK PCV SYSTEM
• Start engine and bring to normal operating temperature. Disconnect crankcase ventilation hose from PCV valve.
Place a stiff piece of paper over the hose. Wait 1 minute.
Does vacuum hold paper in place?
Ye s>>Verify test results. If OK, see diagnostic index to repair any additional symptom.
No
>>Check for vacuum leaks, obstructions in the PCV system, oil cap, PCV valve, rocker cover bolt
torque/gasket leak. Repair as necessary.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03–564Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2.4L
•Fuel pressure at idle: 320-350 kPa (3.2 - 3.5 bar)
3. If engine runs, but pressure is below minimum pressure, check the following: a. Check for a kinked fuel supply line between the fuel rail and the fuel pump, repair if necessary.
b. Check the fuel filter for blockage, and replace the fuel filter if necessary (See Fuel Filter Removal & Installa-
tion in Section 04 Fuel Delivery).
c. Check the fuel pump, and replace if necessary (See Fuel Pump Removal & Installation in Section 04 Fuel
Delivery).
4. If operating pressure is above the maximum pressure, the electric fuel pump is OK, but fuel pressure regulator is defective. Replace the fuel pressure regulator (See Fuel Pump Removal & Installation in Section 04 Fuel
Delivery).
NOTE:
• The 1.6L & 1.8L & 2.0L fuel pressure regulator is integrated into the fuel pump assembly and is not serviced
separately.
• The 2.4L fuel pressure regulator is connected to the fuel rail, and is serviced separately.
5. Install the protective cap to the service test port pressure fitting (1) on the fuel rail.
Observe the following fuel pressures when testing:
FUEL PRESSURE - 1.6L & 1.8L & 2.0L
Key On 400 kPa (4.0 bar)
Engine Idle 400-420 kPa (4.0 - 4.2 bar)
Key Off 380 kPa (3.8 bar) in 10 minutes
FUEL PRESSURE - 2.4L
Key On 329 kPa (3.29 bar)
Engine Idle 320-350 kPa (3.2 - 3.5 bar)
Key Off 350 kPa (3.5 bar) in 10 minutes
Fuel System Troubleshooting Chart
CONDITIONPOSSIBLE CAUSES CORRECTION
No Start/Hard Start/Start and then
Stall · Contaminated fuel
· Low fuel pressure
· Restricted fuel filter
· Fuel pump relay inoperative
· Restricted or leaking fuel lines
· Fuel pressure regulator· Drain, flush and refill fuel system.
· Check fuel pump pressure.
· Replace fuel filter.
· Test fuel pump relay.
· Inspect/replace necessary fuel
line(s), perform fuel system air
purge.
· Inspect/replace the fuel pump if
necessary.
Stalls Under Aggressive Maneuvers/
Loss Of Fuel Pressure · Restricted or damaged fuel filter
· Contaminated fuel
· Damaged fuel tank· Replace fuel filter.
· Drain, flush and refill fuel system.
· Replace fuel tank.
Cannot Refill Fuel Tank/Excessive
Pressure in Fuel Tank When Cap is
Removed · Sticking or damaged fuel tank
fill/vent valve, hose or lines.
· Inspect, repair vent hose and lines,
replace fuel tank.
DIAGNOSIS & TESTING
04
04–13Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4. Remove the fuel pump cover (1).
5. Disconnect the fuel pump connector (3) and thefuel delivery hose (2) and fuel return hose (1).
6. Using special tool CH-20032, remove the fuel pump mounting cover (4).
7. Pull the fuel pump up and out of the fuel tank.
WARNING!
Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-
related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these
instructions may result in serious personal injury or death.
Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when
working on or near any fuel-related component. Highly flammable mixtures are always present and may be
ignited. Failure to follow these instructions may result in serious personal injury or death.
When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage.
Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instruc-
tions may result in serious personal injury or death.
NOTE :
Make sure not to spill fuel inside of the vehicle. 8. Tip the fuel pump on its side and drain the fuel from the fuel pump and remove the fuel pump from the vehicle. NOTE: To keep the fuel tank portion clean and to avoid damage and foreign materials, cover them completely
with plastic bags or something similar.
9. Remove and discard the seal from the fuel tank.
10. Installation is in the reverse order of removal.
Installation Notes:
• Install a new seal to the fuel pump sealing surface.
• Turn the ignition switch to ON (without starting the engine) to apply fuel pressure to the fuel system, then
check the connections for fuel leaks.
• Start the engine and let it idle and check for fuel leaks at the fuel system connections.
ON-VEHICLE SERVICE
LTSM040001
LTSM040002
04–16Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Fuel Pump Inspection
1. Using the following table, apply battery voltage to the specified connector terminals.
2. Check the fuel pump resistance.•Take out the fuel pump.
• Connect the digital multimeter to terminals 2 and 3. Check the fuel pump resistance.
• If the result is not as specified, replace the fuel pump.
3. Check fuel pump operation. •Remove the fuel pump.
• Apply battery voltage to terminals 2 and 3. Check that the pump operates within 10 seconds.
• If the pump does not operate, replace the fuel pump.
NOTE:
• These tests must be completed within 10 seconds to prevent the coil from burning out.
• Keep the fuel pump as far away from the battery as possible.
• Always switch the voltage on and off on the battery side, not on the fuel pump side.
MEASURING CONDITION SPECIFICATION INSPECTION DIAGRAM
Digital Multimeter Positive
(+) to terminal – 2
Digital Multimeter Negative
(-) to terminal – 3 < 130

Battery positive (+) to
terminal – 2
Battery negative (-) to
terminal – 3 8-16V
ON-VEHICLE SERVICE
04
04–17Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS AND TESTING
Starter Motor Bench Test
Starter motor operation can be confirmed by performing
the following free-running bench test. This test can only
be performed with the starter motor removed from the
vehicle.1. Remove the starter motor from the vehicle (See Starter Motor Removal & Installation in Section 05
Starting and Charging).
2. Mount the starter motor securely in a soft-jawed bench vise. The vise jaws should be clamped on
the mounting flange of the starter motor (never
clamp on the starter motor by the field frame).
3. Connect a suitable volt-ampere tester and a 12 V battery to the starter motor in series, and set the
ammeter to the 100 A scale.
4. Install a jumper wire from the solenoid terminal to the solenoid battery terminal. The starter motor should oper- ate. If the starter motor fails to operate, replace the faulty starter motor assembly.
5. Adjust the carbon pile load of the tester to obtain the free running test voltage.
6. Note the reading on the ammeter and compare this reading to the free-running test maximum amperage draw.
7. If the ammeter reading exceeds the maximum amperage draw specification, replace the faulty starter motor assembly.
Starter Solenoid Test
This test can only be performed with the starter motor removed from the vehicle.
1. Remove the starter motor from the vehicle (See Starter Motor Removal & Installation in Section 05
Starting and Charging).
2. Disconnect the wire from the solenoid field coil ter- minal.
3. Check the solenoid for continuity between the sole- noid terminal and the solenoid field coil terminal
with a continuity tester. There should be continuity.
If there is continuity, go to Step 4. If not, replace
the faulty starter motor assembly.
4. Using a continuity tester, check for continuity between the solenoid terminal and the solenoid
case. There should be continuity. If not, replace the
faulty starter motor assembly.
VISM050005
VISM050007
05–6Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Removal & Installation - 2.4L
1. Disconnect the negative battery cable.
2. Remove the engine drive belt (See Drive BeltRemoval & Installation in Section 02 Engine).
3. Remove the generator cable nut (1) connecting the positive cable to the generator.
(Tighten: Generator cable nut to 10 N·m)
4. Disconnect the electrical connector (2).
5. Remove the two generator adjustment bracket bolts (1).
(Tighten: Generator adjustment bracket bolts to
25 N·m)
6. Remove the generator from the engine.
7. Installation is in the reverse order of removal.
Generator Inspection
1. Start the engine. NOTE: If the battery warning lamp illuminates, there may be a problem with the charging system.
2. With the engine running, check the output voltage of the generator with a digital multimeter (note the voltage).
3. If the voltage is between 14.1 V - 14.7 V, the generator is good.
ON-VEHICLE SERVICE
LTSM050003
LTSM050004
05–18Chery Automobile Co., Ltd.