airbag CHERY TIGGO 2009 Service User Guide

Downloaded from www.Manualslib.com manuals search engine Electrical Schematics
Airbag Control System (Page 1 of 3)
GENERAL INFORMATION
LTSMW140011T
14–4Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Airbag Control System (Page 2 of 3)
GENERAL INFORMATION
LTSMW140009T
14
14–5Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Airbag Control System (Page 3 of 3)
GENERAL INFORMATION
LTSMW140010T
14–6Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Airbag Control Module Connector Pin-Out Table
PINCIRCUIT IDENTIFICATION PINCIRCUIT IDENTIFICATION
1 Driver Seatbelt Pre-tensioner Lo 14Front Passenger Airbag Lo
2 Driver Seatbelt Pre-tensioner Hi 15-
3 Front Passenger Seatbelt Pre-tensioner Hi 16 -
4 Front Passenger Seatbelt Pre-tensioner Lo 17 -
5 Ignition Switch 18-
6 GND 19-
7 Airbag Lamp 20-
8 -21 -
9 Diagnostic Link K 22-
10 Driver Airbag Lo 23-
11 Driver Airbag Hi 24-
12 -25 -
13 Front Passenger Airbag Hi
GENERAL INFORMATION
14
14–7Chery 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
14
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 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 B1346 - Driver Airbag Resistance Too High Or Open (1st Stage)
DIAGNOSIS & TESTING
LTSMW140006T
14–16Chery 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.
WARNING!
After installing the Restraints Control Module (RCM), make sure all of the connectors are firmly connected, and
the harness is routed properly. The resistance between the RCM housing and the vehicle body should be less
than 100 m.
On Board Diagnostic Logic
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
B1346 Driver Airbag
Resistance Too High or Open (1st stage) Ignition switch: ONRestraints Control
Module (RCM)
detected that the
resistance of RCM
connector terminals
is out of the
specification range. •
Driver airbag
module
• Spiral cable
• Driver airbag
module connector
• Harness is open
between spiral cable
and RCM
• RCM
FIRING LOOP RESISTANCE FOR DRIVER FRONT AIRBAG
COMPONENT MIN.NOMINAL MAX.
Squib (Rs) 1.8 2.0 2.2
Contact Coil (Rc) 0.232 0.29 0.348
Wiring Harness (Rw) 0 0 0.2
Connector Terminals (Rt) 0 0 0.05
Total Resistance 2.032 2.29 2.798
FIRING LOOP FOR DRIVER FRONT AIRBAG
DESCRIPTION
1: Rw - Wiring harness
resistance
2: Rc - Contact coil
resistance
3: Rs + Rt - Squib
resistance + terminal
resistance
4: Squib for Driver - side
front airbag inflator
5: Contact coil
6: Wiring harness
7: HAE 3.5
R(DAB) = Rs + Rt + Rw +
Rc
DIAGNOSIS & TESTING
14
14–17Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine TEST FOR DRIVER FRONT AIRBAG FIRING LOOP DIAGNOSIS
RESISTANCE RANGE DESCRIPTIONFAULT INDICATION
R(DAB) < 1.06  Resistance too low or short Fault definitely detected
1.80 ≤R(DAB) < 4.84  Normal No fault
7.28 ≤R(DAB) Resistance too high Fault definitely detected
1.06 < R(DAB) < 1.80 
4.84 < R(DAB) < 7.28  Tolerance
Fault may or may not be detected
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
14–18Chery Automobile Co., Ltd.