2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS AND TESTING
Cooling System Pressure Test
WARNING!
Always allow the engine to cool before opening the cooling system. Do not remove the coolant pressure relief
cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and
hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may
result in serious personal injury.
CAUTION:
Do not pressurize the cooling system beyond the maximum pressure listed in the specifications
table in this section, or cooling system components can be damaged.
1. Turn the engine off.
2. Check the engine coolant level. Adjust the coolant level as necessary.
3. Attach the pressure tester to the coolant recovery reservoir. Install a pressure test pump to the quick-connectfitting of the test adapter.
4. Pressurize the engine cooling system to 111 kPa. Observe the gauge reading for approximately 2 minutes. Pres- sure should not drop during this time. If the pressure drops within this time, inspect for leaks and repair as nec-
essary.
5. If no leaks are found and the pressure drops, the pressure relief cap may be leaking. Install a new pressure relief cap and retest the system.
6. If no leaks are found after a new pressure relief cap is installed, and the pressure drops, the leak may be inter- nal to the radiator transmission cooler (if equipped). Inspect the coolant for transmission fluid and the transmis-
sion fluid for coolant. Repair as necessary.
7. If there is no contamination of the coolant or transmission fluid, the leak may be internal to the engine. Inspect the coolant for engine oil and the engine oil for coolant.
8. Release the system pressure by loosening the pressure relief cap. Check the coolant level and adjust as nec- essary.
Cooling System Concentration Test
CAUTION:
Do not mix types of coolant, corrosion protection will be severely reduced.
Coolant concentration should be checked when any additional coolant is added to the cooling system or after a cool-
ant drain, flush and refill. The coolant mixture offers optimum engine cooling and protection against corrosion when
mixed to a freeze point of -37°C to -46°C. The use of a hydrometer or a refractometer can be used to test coolant
concentration.
06
06–11Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Removal & Installation - 2.4L
WARNING!
Always allow the engine to cool before opening the cooling system. Do not remove the coolant pressure relief
cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and
hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may
result in serious personal injury.
1. Drain the cooling system (See Cooling System Draining Procedure in Section 06 Cooling System).
2. Remove the accessory drive belt (See Accessory Drive Belt Removal & Installation in Section 02 Engine).
3. Remove the engine timing belt (See Engine Timing Belt Removal & Installation in Section 02 Engine).
4. Remove the upper balance shaft timing belt (See Upper Balance Shaft Timing Belt Removal & Installation inSection 02 Engine).
5. Remove the coolant pump mounting bolts (1). (Tighten: Coolant pump mounting bolts to 14 N·m)
6. Remove the coolant pump and gasket.
7. Installation is in the reverse order of removal.
Installation Notes:
• Install a new coolant pump gasket during installation.
• Verify the cooling system is filled to proper specifications.
Coolant Pump Inspection
Check coolant seal of the coolant pump for coolant leak. If coolant pump bearing is loose, replace the assembly.
Radiator
Description
The radiator is a cross-flow type (horizontal tubes) with design features that provide greater strength, as well as
sufficient heat transfer capabilities to keep the engine coolant within operating temperatures.
Operation
The radiator functions as a heat exchanger, using air flow across the exterior of the radiator tubes. Heat from the
coolant is then transferred from the radiator into the moving air.
Removal & Installation
WARNING!
Always allow the engine to cool before opening the cooling system. Do not remove the coolant pressure relief
cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and
hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may
result in serious personal injury.
ON-VEHICLE SERVICE
LTSM060003
06
06–17Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
Diagnostic Help
1. The X-431 scan tool connects to the Data Link Connector (DLC) and communicates with the vehicle electronicmodules through the data network.
2. Confirm that the malfunction is current and carry-out the diagnostic tests and repair procedures.
3. If the Diagnostic Trouble Code (DTC) cannot be deleted, it is a current fault.
4. Use only a digital multimeter to perform voltage readings on electronic systems.
5. Refer to any Technical Bulletins that may apply to the failure.
6. Visually inspect the related wiring harness.
7. Inspect and clean all Engine Control Module (ECM) grounds that are related to the most current DTC.
8. If numerous trouble codes were set, use a wiring schematic and look for any common ground circuits or voltage supply circuits that may apply to the DTC.
Intermittent DTC Troubleshooting
If the failure is intermittent perform the following:
•Check for loose connectors.
• Look for any chafed, pierced, pinched, or partially broken wires.
• Monitor the scan tool data relative to this circuit.
• Wiggle the related wiring harness and connectors while looking for an interrupted signal on the affected circuit.
• If possible, try to duplicate the conditions under which the DTC set.
• Look for the data to change or for the DTC to reset during the wiggle test.
• Look for broken, bent, pushed out or corroded terminals.
• Inspect the sensor and mounting area for any condition that would result in an incorrect signal, such as dam-
age, or foreign material.
• A data recorder, and/or oscilloscope should be used to help diagnose intermittent conditions.
• Remove the Engine Control Module (ECM) from the troubled vehicle and install in a new vehicle and test. If
the DTC cannot be deleted, the ECM is malfunctioning. If the DTC can be deleted, return the ECM to the origi-
nal vehicle.
Ground Inspection
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground connec-
tions are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become an unwanted
resistance. This added resistance can alter the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drastically
affect an electronically controlled circuit. A poor or corroded ground can effect the circuit. Perform the following when
inspecting a ground connection:
1. Remove the ground bolt or screw.
2. Inspect all mating surface for tarnish, dirt, rust, etc.
3. Clean as required to assure good contact.
4. Reinstall bolt or screw securely.
5. Inspect for add-onaccessories which may be interfering with the ground circuit.
6. If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are crimped to one eyelet, make
sure no excess wire insulation has been crimped creating a bad ground.
Diagnostic Tools
1. Diagnostic Scan Tool X-431
2. Digital Multimeter
3. Jumper Wire
Transaxle Control Module (TCM) Electrical Harness Test Tool
If using a TCM electrical harness test tool, you can diagnose the TCM harness while the TCM is still connected.
•Measure sensor and solenoid resistance (always measure resistance with the power off).
• Measure the signal voltage of the TCM (always measure voltage with the power on).
08
08–19Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine NOTE :
Using the TCM electrical harness test tool will help prevent electrical connector terminal damage.
Diagnostic Trouble Code (DTC) List
DP0 Automatic Transaxle DTC List
DTCDTC DEFINITION
P0218 Automatic Transaxle Overheating
P0603 Internal Control Module Memory
P0604 RAM
P0605 Checksum Error
P0641 Sensor Feed
P0657 Solenoid Power Supply Circuit Shorted To Voltage
P0657 SSV Feed Circuit Open
P0705 Multi-function Switch: Prohibited Position
P0706 Multi-function Switch: Intermediate Position
P0709 Multi-function Switch: Affected by Interference
P0710 Fluid Temperature Sensor
P0715 No Turbine Speed Sensor Signal
P0715 Turbine Speed Sensor Affected by Interference
P0720 No Vehicle Speed Sensor Signal
P0720 Vehicle Speed Sensor Affected by Interference
P0720 Vehicle Speed Sensor Signal Consistency
P0730 Cylinder Slip
P0740 Lock-up
P0753 EVS1 Circuit Open
P0753 EVS1 Circuit Shorted To Ground
P0753 EVS1 Circuit Shorted To Voltage
P0758 EVS2 Circuit Open
P0758 EVS2 Circuit Shorted To Voltage
P0763 EVS3 Circuit Open
P0763 EVS3 Circuit Shorted To Voltage
P0768 EVS4 Circuit Open
P0768 EVS4 Circuit Shorted To Ground
P0768 EVS4 Circuit Shorted To Voltage
P0773 EVS5 Circuit Open
P0773 EVS5 Circuit Shorted To Voltage
P0775 EVM (Electronic Valve Modulation) Circuit Open
P0775 EVM (Electronic Valve Modulation) Circuit Shorted To Voltage
P0795 EVLU Circuit Open
P0795 EVLU Shorted To Voltage
P0819 Flick Shift Contact Duration
P0819 Flick Shift Contacts
P0840 Pressure Sensor
P0850 P/N Contact
DIAGNOSIS & TESTING
08–20Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine On Board Diagnostic Logic
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSES
P0641 Sensor feed Engine is running The Transaxle
Control Module
(TCM) detects that
the voltage is out of
the acceptable
range.•
TFT sensor
• A/T fluid pressure
sensor
• Harness or
connectors (The
sensor circuit is open
or shorted)
• Transaxle Control
Module (TCM)
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Turn ignition switch off.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on, with the scan tool, view and erase stored DTCs in the TCM.
• Start the engine and warm it to normal operating temperature.
• With the scan tool, select view DTC and data stream.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 08 Transaxle & Transfer Case for more information).
NOTE :
• If DTCs P0840 and P0710 are present, diagnose and repair them before continuing with this test.
• Using the appropriate diagnostic test tool, you can diagnose the TCM harness while the TCM is still connected.
This will help prevent electrical connector terminal damage.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK TRANSAXLE FLUID PRESSURE AND TEMPERATURE SENSOR ELECTRICAL CONNECTOR
• Turn the ignition switch off.
• Disconnect the A/T assembly electrical connector
E-037 (1).
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Ye s>>Go to the next step.
No
>>Repair or replace the electrical connector
as necessary.
DIAGNOSIS & TESTING
LTSMD080023
08–24Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2.CHECK TRANSAXLE FLUID PRESSURE AND TEMPERATURE (TFT) SENSOR POWER SUPPLY
• Turn the ignition switch on.
• Check the A/T fluid pressure sensor voltage supply
circuit for 5 V between connector E-037, terminal
C1 and ground.
• Check the Transaxle Fluid Temperature (TFT) sen-
sor voltage supply circuit for 5 V between connec-
tor E-037, terminal B1 and ground.
Is 5 V present at each terminal?
Ye s>>• Go to the next step.
No
>>• Repair or replace open circuit or short
to ground or short to power in harness
or connectors.
3.CHECK A/T FLUID PRESSURE SENSOR AND TFT SENSOR GROUND CIRCUIT
• Disconnect the Transaxle Control Module (TCM) electrical connector E-036 (1).
• Check the A/T fluid pressure sensor ground circuit
between the A/T connector E-037, terminal C3 and
TCM connector E-036 terminal 25 for an open,
short to ground or short to voltage.
• Check the A/T TFT sensor ground circuit between
the A/T connector E-037, terminal B4 and TCM
connector E-036 terminal 53 for an open, short to
ground or short to voltage.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair the circuit for an open or short to
ground or short to voltage in the harness or
connectors.
DIAGNOSIS & TESTING
LTSMD080024
LTSMD080074
08
08–25Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.CHECK TFT SENSOR
• Check TFT sensor as follows:
TFT SENSOR RESISTANCE
TEMPERATURE °C RESISTANCE
-50 93917
-30 28237.4
-10 9826
0 6079
20 2528.5
25 2063
40 1159.2
50 810.4
70 419.1
80 309.2
100 176.2
120 105.9
140 66.7
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the TFT sensor.
5.CHECK A/T FLUID PRESSURE SENSOR
• Turn ignition switch on.
• With X-431 scan tool, select view TCM data stream and compare to the following table.
ITEM CONDITION DISPLAY
VALUE
Fluid Pressure •
Ignition switch:
ON
• Engine: Not
running Below 0.2 bar
• Engine: Idle
• TFT: 31°C
• ECT: 30°C Approximately
0.05 bar
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the TCM.
DIAGNOSIS & TESTING
08–26Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK DTC
• With the X-431 scan tool, read TCM DTCs.
• Refer to DTC Confirmation Procedure.
Is the check result normal?
Ye s>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
No
>>Replace the TCM.
DIAGNOSIS & TESTING
08
08–27Chery Automobile Co., Ltd.