Chery Tiggo 5 (T21). Manual — part 355
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Wiggle related wire harnesses and connectors and observe if signal is interrupt in the related circuit.
If possible, try to duplicate the conditions under which the DTC was set.
Look for the data that has changed or the DTC to be reset during the wiggle test.
Look for broken, bent, protruded or corroded terminals.
Inspect the airbag components and mounting areas for damage, foreign matter, etc. that will cause
incorrect signals.
Check and clean all wire harness connectors and grounding parts related to the current DTC.
Remove the SRS control module assembly from the malfunctioning vehicle and install it to a new vehicle
and perform a test. If DTC cannot be cleared, the SRS control module assembly is malfunctioning. If DTC
can be cleared, reinstall the SRS control module assembly to original vehicle.
If multiple trouble codes were set, refer to the circuit diagrams to look for any common ground circuit or
power supply circuit applied to the DTC.
Refer to Technical Bulletin that is applied to the malfunction.
Ground Inspection
Groundings are very important to the entire circuit system, which are normal or not can seriously affect the
entire circuit system. Groundings are often exposed to moisture, dirt and corrosive elements. Corrosion (rust)
can increase resistance which will change the way in which a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can affect
the electronically controlled circuit. Perform the following operations when checking the ground points:
1. Remove the ground nut.
2. Check all contact surfaces for tarnish, dirt, rust, etc.
3. Clean as necessary to ensure that contacting is in a good condition.
4. Reinstall the ground nut securely.
5. Check if add-on accessories interfere with the ground circuit.
6. If several wire harnesses are crimped into one ground eyelet terminal, check if the wire harnesses are
installed correctly. Make sure all wire harnesses are clean, securely fastened and providing a good ground
path.
Diagnosis Procedure
HINT:
Use following procedures to troubleshoot the Supplemental Restraint System (SRS).
Standard voltage: 11 to 14 V
If voltage is below 11 V, recharge or replace the battery before proceeding to next step.
1
Vehicle brought to workshop
2
Check battery voltage
NEXT
NEXT
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HINT:
An activation prevention mechanism is built in the airbag system connector. When the connector is
disconnected, this mechanism cuts off the circuit by bringing the short spring plate into contact with the
terminals, thus insulating the circuit from external power sources to prevent accidental airbag activation.
To release the activation prevention mechanism, insert a piece of paper with the same thickness as the male
terminal between terminals and short spring plate to disconnect the connection.
During circuit troubleshooting for the airbag system, make sure to cut off the battery power source, and wait
for at least 90 seconds to discharge the system condenser.
When performing electrical diagnosis and test, always refer to the relevant circuit diagram for the special
circuit and component information.
3
Check SRS warning light
4
Check for DTCs (current DTC and history DTC)
NEXT
For current DTC, go to step 5
For history DTC, go to step 6
DTC
occurs
No
DTC
5
Diagnostic Trouble Code (DTC) chart
6
Circuit inspection
WARNING
DO NOT release the activation prevention mechanism unless specially directed by the troubleshooting
procedure.
7
Repair
NEXT
NEXT
NEXT
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8
Clear DTCs (current DTC and history DTC)
9
Check for DTCs (current DTC and history DTC)
NEXT
Go to step 5
Go to next step
DTC
output
No DTC
output
10
Confirmation test
11
End
NEXT
NEXT
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Diagnostic Trouble Code (DTC) Chart
DTC Code
DTC Definition
B0001-11
Front Airbag Driver Loop Circuit Short to Ground
B0001-12
Front Airbag Driver Loop Circuit Short to Battery
B0001-1A
Front Airbag Driver Loop Circuit Resistance Below Threshold
B0001-1B
Front Airbag Driver Loop Circuit Resistance Above Threshold
B0001-1C
Front Airbag Driver Loop Circuit Voltage Out of Range
B0010-11
Front Airbag Passenger Loop Circuit Short to Ground
B0010-12
Front Airbag Passenger Loop Circuit Short to Battery
B0010-1A
Front Airbag Passenger Loop Circuit Resistance Below Threshold
B0010-1B
Front Airbag Passenger Loop Circuit Resistance Above Threshold
B0010-1C
Front Airbag Passenger Loop Circuit Voltage Out of Range
B0070-11
Belt Pretensioner Front Driver Loop Circuit Short to Ground
B0070-12
Belt Pretensioner Front Driver Loop Circuit Short to Battery
B0070-1A
Belt Pretensioner Front Driver Loop Circuit Resistance Below Threshold
B0070-1B
Belt Pretensioner Front Driver Loop Circuit Resistance Above Threshold
B0070-1C
Belt Pretensioner Front Driver Loop Circuit Voltage Out of Range
B0072-11
Belt Pretensioner Front Passenger Loop Circuit Short to Ground
B0072-12
Belt Pretensioner Front Passenger Loop Circuit Short to Battery
B0072-1A
Belt Pretensioner Front Passenger Loop Circuit Resistance Below Threshold
B0072-1B
Belt Pretensioner Front Passenger Loop Circuit Resistance Above Threshold
B0072-1C
Belt Pretensioner Front Passenger Loop Circuit Voltage Out of Range
B1231-12
Buckle Switch Front Passenger (BLFP) Circuit Short to Battery
B1231-1C
Buckle Switch Front Passenger (BLFP) Circuit Voltage Out of Range
B1232-12
PDM (Passenger Detection Mat) Switch Circuit Short to Battery
B1232-1C
PDM (Passenger Detection Mat) Switch Circuit Voltage Out of Range
B1210-00
Front Deployment
B1211-00
BT Deployment
B125A-00
Crash Counter Reached Max
B1240-96
ICM Airbag Lamp Failed
B1251-49
Electronic Control Unit (ECU), Internal Electronic Failure
B1250-16
Battery Voltage Circuit Voltage Below Threshold
B1250-17
Battery Voltage Circuit Voltage Above Threshold
U1300-55
Software Configuration Error
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