CHERY TIGGO 2009 Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
Diagnostic Help
1. Confirm that the malfunction is current and carry-out the diagnostic tests and repair procedures.
2. If the DTC cannot be deleted, it is a current fault.
3. Use a digital multimeter to perform voltage readings on the transaxle electronic system.
4. The scan tool connects to the Data Link Connector (DLC) and communicates with the Transaxle Control Module(TCM) over the CAN data circuit.
5. 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 and wiggle test the wiring and connectors.
• 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
damage or foreign material.
6. Remove the TCM from the troubled vehicle and install in a new vehicle and test. If the DTC cannot be deleted, the TCM is malfunctioning. If the DTC can be deleted, return the TCM to the original vehicle.
Diagnostic Tools
Diagnostic Scan Tool X-431
Read the following when connecting the X-431 scan tool:
•Connect the scan tool to the Data Link Connector (DLC) for communication with the vehicle.
• The DLC is located on the driver side compartment under the steering column (it is attached to the instrument
panel and accessible from the driver seat).
• The DLC is rectangular in design and capable of accommodating up to 16 terminals.
• The electrical connector has keying features to allow easy connection.
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).
NOTE :
Using the TCM electrical harness test tool will help prevent electrical connector terminal damage.
08–158Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Trouble Code (DTC) List
F4A4 Automatic Transaxle DTC List
DTCDTC DEFINITION
11 TPS Short Circuit
12 TPS Open Circuit
14 TPS Abnormal Adjustment
15 TFT Sensor Open Circuit
21 CKP Sensor Malfunction
22 Input Speed Sensor
23 Output Speed Sensor Fault
26 Brake Pedal Position Switch Circuit Malfunction
29 Vehicle Speed Sensor Malfunction
31 Reverse/Low Solenoid Malfunction
32 UD Solenoid Open
33 2 Gear Solenoid Open Circuit
34 Overdrive Solenoid Circuit Malfunction
36 Damper Clutch System Control Solenoid Malfunction
41 First Gear, Ration Out Of Limits
42 Second Gear, Ration Out Of Limits
43 Third Gear, Ration Out Of Limits
44 Fourth Gear, Ration Out Of Limits
46 Reverse Gear, Ration Out Of Limits
51 CAN Data Bus Interface Malfunction
52 DCC Digital Command System Malfunction
54 Electrical Relay Open Circuit
56 Neutral Indicator Lamp Open Circuit
DIAGNOSIS & TESTING
08
08–159Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Trouble Code (DTC) Tests
15 - TFT Sensor Open Circuit
DIAGNOSIS & TESTING
LTSMW080005T
08–160Chery 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
15 TFT sensor open
circuit Vehicle is driving The Transaxle
Control Module
(TCM) will set this
DTC when the TCM
received voltage
signal is more than
2.6 V form the
sensor after the
vehicle has driven
for 10 minutes. •
TFT sensor
• Harness or
connectors (The
sensor circuit is open
or shorted)
• 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.
• Drive the vehicle up to 10 km/h or more.
• 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 :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK TFT SENSOR RESISTANCE
• Turn ignition switch off.
• Disconnect A/T assembly connector E-086.
• Check TFT resistance between the TFT sensor terminals:
SENSOR CONNECTOR TERMINAL TEMPERATURE RESISTANCE
K
A/T sensor E-086 1 - 20°C
16.7 - 20.5
20°C 7.3 - 8.9
40°C 3.4 - 4.2
60°C 1.9 - 2.1
80°C 1.0 - 1.2
110°C 0.57 - 0.69
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the TFT sensor.
DIAGNOSIS & TESTING
08
08–161Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2.CHECK TFT SENSOR HARNESS
• Disconnect TCM connector.
• Check for continuity between the following A/T assembly terminals and TCM terminals:
A/T ASSEMBLY
CONNECTOR TERMINAL TCM
CONNECTOR TERMINAL CONTINUITY
14
0Yes
23 9Yes
• Check the harness for short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the open circuit or short to power or short to ground.
3.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
• Check TCM power supply and ground circuit.
• Reinstall any removed parts.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace damaged parts.
4.CHECK DTC
• With the X-431 scan tool, read TCM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC 15 still present?
Ye s>>Replace the TCM.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
08–162Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 22 - Input Speed Sensor
DIAGNOSIS & TESTING
LTSMW080006T
08
08–163Chery 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
22 Input speed sensor Vehicle is driving •
The Transaxle
Control Module
(TCM) will set this
DTC when the TCM
didn’t received pulse
signal from the input
shaft speed sensor
for above 1 seconds
when the vehicle is
driving for 30 km/h
at 3 or 4 gear.
• If the DTC was
set for 4 times, then
the A/T will be
locked in 3rd gear
(D gear) or shifted
to low gear when in
sports mode. •
Input shaft speed
sensor
• The retainer of
deceleration clutch
• Harness or
connectors (The
sensor circuit is open
or shorted)
• 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.
• Drive the vehicle up to 10 km/h or more.
• 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 :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
08–164Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK A/T INPUT SIGNAL
• With the scan tool, select view DTC and data stream for A/T.
• Vehicle start and read out the value of INPUT SPEED SENSOR.
ITEM CONDITIONDISPLAY
VALUE
Input speed sensor During driving
(lock-up ON) Approximately
matches the
engine speed.
Is the check result normal?
Ye s>>The condition that caused this DTC is intermittent (See Diagnostic Help in Section 08 Transaxle &
Transfer Case).
No
>>Go to the next step.
2.CHECK INPUT SHAFT SPEED SENSOR POWER SUPPLY
• Stop the vehicle and turn ignition switch off.
• Disconnect input shaft speed sensor electrical connector.
• Turn the ignition switch on.
• Check sensor power supply between sensor termi-
nal 3 and ground in the sensor electrical connector
E-088.
• Voltage should be more than 12 V.
Is the check result normal?
Ye s>>Go to step 4.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD080004
08
08–165Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Body fuse and relay box H13
Fuse 3 (10A)
Harness open or short between input shaft speed sensor and fuse
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the open circuit or short to ground or short to power in harness or connectors.
4.CHECK INPUT SHAFT SPEED SENSOR SIGNAL CIRCUIT
• Check sensor signal circuit between sensor terminal 2 and ground in the sensor electrical connector E-088.
• 5 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace open circuit or short to
power or short to ground.
5.CHECK INPUT SHAFT SPEED SENSOR GROUND CIRCUIT
• Turn the ignition switch off.
• Disconnect TCM connector.
• Check for harness continuity between the following terminals:
INPUT SPEED
SENSOR
CONNECTOR TERMINAL TCM
CONNECTOR TERMINAL CONTINUITY
13
9Yes
• Check the harness for short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace open circuit or short to power or short to ground.
DIAGNOSIS & TESTING
LTSMD080061
08–166Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK INPUT SHAFT SPEED SENSOR SIGNAL
• Connect the TCM and sensor electrical connector.
• Start the vehicle and perform the following:
Engine: 2000 RPM
Vehicle: 50 km/h
Gear: 3
• Check sensor signal between sensor terminal 2 and ground in the sensor electrical connector E-088 with the
X-431 or oscilloscope.
• Make sure the wave shape is normal and signal voltage is fluctuating from0-5V.
Is the check result normal?
Ye s>>Go to step 9.
No
>>Go to the next step.
7.CHECK INPUT SHAFT SPEED SENSOR
• Perform the following:
Loosen the bolt of the sensor.
Remove the sensor.
Visually inspect the sensor for missing or chipped teeth.
Is the check result normal?
Ye s>>Replace the input speed sensor.
Monitor the input speed sensor signal on the X-431 or oscilloscope.
If the input speed sensor signals were normal, the system is OK.
If the input speed sensor signals were still irregular or missing, go to step 8.
No
>>Replace input speed sensor.
8.CHECK THE RETAINER OF DECELERATION CLUTCH
• Disassemble and inspect the A/T and replace the retainer for the deceleration clutch.
• Check for a chipped and damaged signal retainer for the deceleration clutch.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the retainer for the deceleration clutch.
Monitor the input speed sensor signal on the X-431 or oscilloscope.
If the signal pulse is not normal, repair the noise interference.
9.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
08–167Chery Automobile Co., Ltd.