2009 CHERY TIGGO engine

Downloaded from www.Manualslib.com manuals search engine 4.CHECK CONNECTORS
NOTE :
Diagnose and repair all active codes before diagnosing stored codes (See Restraints Control Module DTC List in
Section 14 Restraints).
• With the scan tool, record and erase all RCM DTCs.
• Using the electrical schematic as a guide, inspect the following:
Inspect the wiring and connectors of the related airbag system.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Verify that there is good pin to terminal contact in the related connectors.
Were any problems found?
Ye s>>Repair as necessary.
No
>>Go to the next step.
5.CHECK DTC
• Reconnect all disconnected components and harness connectors.
• With the X-431 scan tool, read RCM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC B2504 still present?
Ye s>>Replace the RCM.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
14–40Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine B1620 - Internal Fault - Replace ECU
DIAGNOSIS & TESTING
LTSMW140002T
14
14–41Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
LTSMW140003T
14–42Chery 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
B1620 Internal Fault -
Replace ECU Ignition switch on Restraints Control
Module (RCM)
detected an internal
failure. •
RCM
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 latest software available.
• Turn ignition switch on.
• With the scan tool, record and erase stored DTCs in the RCM.
• Turn ignition switch off and wait for a few seconds.
• Turn ignition switch on then select view DTC.
• 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 14 Restraints for more information).
Diagnostic Guide Lines
Observe the following guide lines while diagnosing this DTC:
•Troubleshoot any Engine Control Module (ECM) charging/cranking DTCs before proceeding.
• If the warning lamp goes out immediately after the warning lamp flashed for6-7seconds, this indicates that
the system is OK.
• If the warning lamp is on for6-7seconds continuously, then goes out, or the warning lamp is on continuously,
this indicates that there are history DTCs in the system. Use the Scan Tool to erase the DTCs.
• If any other condition occurs, use the Scan Tool to erase the history DTCs first, then check the warning lamp.
If the warning lamp does not go out immediately after the warning lamp flashes for6-7seconds when using
the Scan Tool, erase the history DTCs first.
• In the course of troubleshooting the airbag system, make sure the system power supply is shut off, and wait
two minutes for the system capacitor to discharge.
• The squib circuit connectors integrate a shortingspring (which prevents the airbag from deploying unintention-
ally due to static electricity by shorting the positive wire to the negative wire in the squib circuit when the con-
nectors are disconnected). Therefore, if the airbag electrical connector or spiral cable electrical connector is
damaged or improperly connected, the shorting spring may not be released when the electrical connector is
connected.
• The following tools are required to perform the DTC diagnostic procedure:
X-431 Scan Tool
Airbag Special Load Tool
Digital Multimeter
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
14
14–43Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK DTC
• Perform the DTC confirmation procedure.
Is DTC B1620 present?
Ye s>>Go to the next step.
No
>>The condition that caused this DTC to set is currently not present (See Diagnostic Help and Intermit-
tent DTC Troubleshooting in Section 14 Restraints for more information).
2.CHECK GROUND CONNECTION
• Turn ignition switch off.
• Disconnect the negative battery cable.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 14 Restraints for more
information).
• Inspect the ground connection C-201 mounting position (See Vehicle Wiring Harness Layout - Main Harness in
Section 16 Wiring).
Is the ground connection OK?
Ye s>>Go to the next step.
No
>>Repair or replace ground connection.
3.CHECK RESTRAINTS CONTROL MODULE (RCM) ELECTRICAL CONNECTOR
• Disconnect the Restraints Control Module (RCM)
electrical connector (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
LTSM140006
14–44Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.CHECK RESTRAINTS CONTROL MODULE (RCM) POWER SUPPLY
• Turn ignition switch on.
• Check RCM power supply between terminal 5 and
terminal 6 in the RCM electrical connector J-001
terminal side.
Is the voltage less than 9 V?
Ye s>>Go to step 5.
No
>>Replace the RCM.
5.CHECK DTC
• With the X-431 scan tool, read RCM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC B1620 still present?
Ye s>>Replace the RCM.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
LTSMD140001
14
14–45Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ON-VEHICLE SERVICE
Airbag System Disarming Procedure
Description
WARNING!
The steering column contains the driver’s airbag. The airbag system is a sensitive, complex electro-mechanical
unit. Before attempting to diagnose, remove or install the airbag system components, you must first disconnect
and isolate the negative battery (ground) cable. Then wait two minutes for the system capacitor to discharge.
Failure to do so could result in accidental deployment of the airbag and possible personal injury. The fasteners,
screws, and bolts, originally used for the airbag components, have special coatings and are specifically
designed for the airbag system. They must never be replaced with any substitutes. Anytime a new fastener is
needed, replace with the correct fasteners provided in the service package or fasteners listed in the parts books.
1. Turn the ignition off.
2. Disconnect and isolate the negative battery cable.
3. Wait two minutes for the system capacitor to discharge.
4. The airbag system can now be serviced safely.
Driver Side Airbag
Removal & Installation
1. Turn the ignition off.
2. Disconnect the negative battery cable.
WARNING!
Wait two minutes for the airbag system reserve capacitor to discharge before beginning any airbag system or
component service. Failure to do so may result in accidental airbag development, serious or fatal injury (See
Airbag System Disarming Procedure in Section 14 Restraints).
3. Remove the two driver side airbag retaining bolts (1).(Tighten: Driver side airbag retaining bolts to 10
N·m)
4. Remove the driver side airbag and disconnect the airbag squib electrical connector.
5. Installation is in the reverse order of removal.
LTSM140001
14–46Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Front Passenger Side Airbag
Removal & Installation
1. Turn the ignition off.
2. Disconnect the negative battery cable.
WARNING!
Wait two minutes for the airbag system reserve capacitor to discharge before beginning any airbag system or
component service. Failure to do so may result in accidental airbag development, serious or fatal injury (See
Airbag System Disarming Procedure in Section 14 Restraints).
3. Remove the two glove box mounting bolts (1).
ON-VEHICLE SERVICE
LTSM150086
14
14–47Chery Automobile Co., Ltd.