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
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