2009 CHERY TIGGO engine

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 DTC cannot be deleted, it is a current fault.
4. Use 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 Restraints Control Module (RCM) grounds that are related to 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, foreign material.
• A data recorder, and/or oscilloscope should be used to help diagnose intermittent conditions.
• Remove the Restraints Control Module (RCM) from the troubled vehicle and install in a new vehicle and test. If
the DTC cannot be deleted, the RCM is malfunctioning. If the DTC can be deleted, return the RCM 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 affect 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
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.
14–8Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Airbag Special Load Tool
Use the airbag special load tools to diagnose airbag system faults:
•The airbag special load tools simulates airbag system components.
NOTE :
Using the airbag special load tools will help prevent other airbag DTCs from being set while troubleshooting the
system.
Digital Multimeter
Read the following when using the digital multimeter:
• Troubleshoot electrical problems and wiring systems.
• Use a multimeter for basic fault finding and bench testing.
• Use a multimeter to measure voltage, current and resistance.
Diagnostic Trouble Code (DTC) List
Restraints Control Module DTC List
DTC DTC DEFINITION
B1101 Battery Voltage High
B1102 Battery Voltage Low
B1345 Driver Airbag Open
B1346 Driver Airbag Resistance Too High (1st Stage)
B1347 Driver Airbag Resistance Too Low (1st Stage)
B1348 Driver Airbag Resistance Circuit Short To Ground (1st Stage)
B1349 Driver Airbag Resistance Circuit Short To Battery (1st Stage)
B1351 Passenger Airbag Open
B1352 Passenger Airbag Resistance Too High (1st Stage)
B1353 Passenger Airbag Resistance Too Low (1st Stage)
B1354 Passenger Airbag Resistance Circuit Short To Ground (1st Stage)
B1355 Passenger Airbag Resistance Circuit Short To Battery (1st Stage)
B1360 Pretensioner Front-Driver Open
B1361 Pretensioner Front-Driver Resistance Too High
B1362 Pretensioner Front-Driver Resistance Too Low
B1363 Pretensioner Front-Driver Resistance Circuit Short To Ground
B1364 Pretensioner Front-Driver Resistance Circuit Short To Battery
B1366 Pretensioner Front-Passenger Open
B1367 Pretensioner Front-Passenger Resistance Too High
B1368 Pretensioner Front-Passenger Resistance Too Low
B1369 Pretensioner Front-Passenger Resistance Circuit Short To Ground
B1370 Pretensioner Front-Passenger Resistance Circuit Short To Battery
B1406 PPD Front-Passenger Defect
B1407 PPD Front-Passenger Communication Error
B1462 Front PPD Open
B1511 Buckle Switch Driver Open Or Short To Battery
B1512 Buckle Switch Driver Short Or Short To Ground
B1513 Buckle Switch Passenger Open Or Short To Battery
B1514 Buckle Switch Passenger Short Or Short To Ground
DIAGNOSIS & TESTING
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14–9Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DTCDTC DEFINITION
B1515 Buckle Switch Driver Defect
B1516 Buckle Switch Passenger Defect
B1527 Passenger Airbag Deactivation Switch Open Or Short To Battery
B1528 Passenger Airbag Deactivation Switch Short Or Short To Ground
B1529 Passenger Airbag Deactivation Switch Defect
B1650 Crash Record In 1st Stage Only (Frontal - Replace ECU)
B1657 Crash Record In Belt Pretensioner Only
B1658 Belt Pretensioner 6 Times Deployment
B1620 Internal Fault - Replace ECU
B2501 Warning Lamp Fault - Open
B2503 Warning Lamp Fault - Short To Ground
B2504 Warning Lamp Fault - Short To Battery
B2505 Passenger Airbag Off Warning Lamp Failure
DIAGNOSIS & TESTING
14–10Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Trouble Code (DTC) Tests
B1102 - Battery Voltage Low
DIAGNOSIS & TESTING
LTSMW140002T
14
14–11Chery Automobile Co., Ltd.

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LTSMW140003T
14–12Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine NOTE :
The Restraints Control Module (RCM) ground pin must be connected to the vehicle chassis in the immediate location
of the RCM mounting area.
On Board Diagnostic Logic
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
B1102 Battery Voltage Low Ignition switch: ON Restraints Control
Module (RCM)
detected that the
battery voltage is
excessively low.•
Battery
• Charge system
• Harness is open or
shorted
• 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
14–13Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.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.
2.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.
3.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 4.
No
>>Replace the RCM.
DIAGNOSIS & TESTING
LTSM140006
LTSMD140001
14–14Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.CHECK SYSTEM VOLTAGE
• Start the engine, raise the engine speed over 1000 RPM.
• Measure the charging voltage with a voltmeter at the battery positive and negative terminals.
Is the voltage less than 9 V?
Ye s>>Inspect the charging system.
No
>>Go to the next step.
5.CHECK THE BATTERY
• Start the engine, raise the engine speed over 1000 RPM for a few minutes.
• Turn ignition switch off.
• Measure the voltage drop with a voltmeter at the battery positive and negative terminals while cranking the
engine.
• Battery voltage should be more than approximate 9.0 V.
Is the check result normal?
Ye s>>Go to step 6.
No
>>Charge or replace the battery.
6.CHECK RESTRAINTS CONTROL MODULE (RCM) SUPPLY CIRCUIT
• Measure the resistance between RCM terminal 5 and the battery negative connector.
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Check fuse.
Inspect and replace the harness for an open.
Check harness connector C-106, J-100.
Check correlative components.
7.CHECK DTC
• With the X-431 scan tool, read RCM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC B1102 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
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14–15Chery Automobile Co., Ltd.