2009 CHERY TIGGO engine

Downloaded from www.Manualslib.com manuals search engine U0001 - CAN Communication Error
DIAGNOSIS & TESTING
LTSMW080019T
08–130Chery 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 CAUSE
U0001 CAN
Communication Error With the ignition
switch on The Transaxle
Control Module
(TCM) lost
communication over
the CAN-Bus circuit.
The circuit is
continuously
monitored. •
CAN Converter
• Harness or
connectors (The
sensor circuit is open
or shorted)
• ECM
• 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.
• 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 :
• Ensure that the battery is fully charged.
• Before performing any DTC diagnostic procedures, verify the TCM power and ground circuits are properly con-
nected.
• Before performing the diagnostic procedure, repair all other TCM DTCs first.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK GROUND CONNECTION
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 12 Brakes).
• Inspect the ground connection C-201 mounting position (See Vehicle Wiring Harness Layout - Main Harness in
Section 16 Wiring).
Are the ground connections OK?
Ye s>>Go to the next step.
No
>>Repair or replace the ground connections.
DIAGNOSIS & TESTING
08
08–131Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2.CHECK DTC
• Turn ignition switch on.
• With the scan tool, select view TCM DTC and data stream.
Is DTC U0001 present?
Ye s>>Go to the next step.
No
>>The condition that caused this DTC is intermittent (See Diagnostic Help in Section 08 Transaxle &
Transfer Case).
Erase all codes and test drive the vehicle to verify the repair is complete.
3.CHECK OTHER MODULE DTC
• With the scan tool X-431, attempt to enter all the other CAN communication modules such as ECM, CAN con-
verter module.
• Read the CAN DTCs.
Were other modules DTCs found?
Ye s>>If all of the other modules have the same DTC CAN Communication, go to the next step.
If all of the other modules have the DTC Lost communication with TCM, and do not have the CAN
Communication, replace and program the TCM module.
No
>>Go to step 8.
4.CHECK CAN-BUS LINE TERMINAL RESISTANCE IN TCM
• Turn the ignition switch off.
• Disconnect the negative battery cable.
• Disconnect TCM connector.
• Check resistance between TCM connector 38 and 39.
CAN TERMINAL RESISTANCE
CAN-H CAN-L RESISTANCE
3839123
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace TCM.
The problem caused by TCM internal error.
DIAGNOSIS & TESTING
08–132Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 5.CHECK CAN-BUS LINE
• Disconnect ECM and CAN converter connectors.
• Check for harness continuity between the following terminals:
CHECK CAN-H CONTINUITY
CAN TCM
TERMINAL ECM
TERMINAL CONTINUITY
CAN-
H 38
62Yes
CHECK CAN-L CONTINUITY
CAN TCM
TERMINAL ECM
TERMINAL CONTINUITY
CAN-
L 39
81Yes
• Check the harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace CAN-Bus line.
DIAGNOSIS & TESTING
08
08–133Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK CAN-BUS LINE
• Connect the negative battery cable.
• Connect TCM and ECM connectors.
• Turn the ignition switch on.
• Check CAN-Bus voltage between the following terminals:
CAN-H 0.025 V should exist with bus communication inactive.
0.65 V should exist with bus communication active.
CAN-L 11 V should exist with bus communication inactive.
4.65 V should exist with bus communication active.
• Check CAN-Bus voltage between the following terminals:
CHECK CAN-BUS LINE VOLTAGE
DLC TERMINAL GROUND
6 (CAN-H)
Ground
14 (CAN-L)
Is the check result normal and DTC U0001 not present?
Ye s>>Replace CAN converter.
The problem caused by CAN converter internal error.
No
>>Go to the next step.
7.CHECK CAN-BUS LINE
• Turn ignition switch off.
• Connect CAN converter.
• Disconnect ECM connectors.
• Turn ignition switch on.
• Check CAN-Bus voltage as the standard value.
Is the check result normal and DTC U0001 not present?
Ye s>>Replace and program ECM.
The problem caused by ECM internal error.
No
>>Go to the next step.
DIAGNOSIS & TESTING
08–134Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 8.CHECK THE TCM ELECTRICAL CONNECTOR
• Inspect the TCM electrical connector pins for proper fit or any chafed, pierced, pinched, or partially broken
wires.
• With the X-431 scan tool, read TCM DTCs.
Is the check result normal and DTC U0001 not present?
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.
The problem caused by TCM internal error.
DIAGNOSIS & TESTING
08
08–135Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ON-VEHICLE SERVICE
DPO Automatic Transaxle Assembly
Removal & Installation
1. Raise and support the vehicle.
2. Remove the engine cover.
3. Remove the battery and battery tray (See Battery Removal & Installation in Section 05 Starting & Charging).
4. Remove the air cleaner and air duct assembly.
5. Drain the cooling system (See Cooling System Draining Procedure in Section 06 Cooling System).
6. Remove the base mounting (1) of the air cleanerhousing assembly.
7. Remove the transaxle ground cable.
8. Disconnect and remove the electrical connectors for the following components:• Vehicle speed sensor (2)
• Crankshaft position sensor
• Automatic transaxle assembly (3)
9. Disconnect the transaxle fluid coolant lines (4) using a suitable tool.
10. Remove the shift cable (1) from the transaxle assembly.
11. Raise the vehicle.
12. Remove the drain plug (2) with an inner square socket wrench.
13. Remove the fluid limiting duct (1) with an 8 mm inner hex socket wrench.
14. Drain the transaxle fluid.
LTSM050002
BESM080057 LTSM080184
08–136Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 15. Remove the bolts attaching the transaxle cooling lines to the transaxle.
16. Remove the starter motor (See Starter Removal & Installation in Section 05 Starting & Charging).
17. Remove the bolts (1) attaching the drive plate tothe torque converter (three bolts total).
(Tighten: Drive plate bolts to 75 N·m)
18. Remove the engine to transaxle upper bolts. (Tighten: Engine to transaxle upper bolts to 80 N·m)
19. Remove both front axle shafts (See Front Axle Shaft Removal & Installation in Section 09 Driveline & Axle).
20. Remove transaxle mount nuts (2) and the transaxle mount bracket bolts (1).
(Tighten: Transaxle mount nut to 120 N·m)
21. Remove the engine undercover and splash shields.
22. Support the engine using an engine support fixture or suitable jack.
23. Remove the front sub-frame assembly (See Sub-Frame Assembly Removal & Installation in Section 10 Suspen- sion).
24. Remove the engine to transaxle lower bolts. (Tighten: Engine to transaxle lower bolts to 80 N·m)
25. Remove the bolts that mount the side sill to vehicle body. (Tighten: Side sill to vehicle body bolts to 120 N·m)
ON-VEHICLE SERVICE
BESM080058
LTSM020156
08
08–137Chery Automobile Co., Ltd.