Trouble Shooting and Maintenance of SRS
Check immediately if the warning light always illuminates or reminding of unfastened seat belt is abnormal.
1)Diagnostic Process
(1)Check and confirm.
①Confirm the questions of the customer;
②Do the visual inspection(as shown in Table 3.9)to see whether there is any apparent trace of mechanical or electrical damage;
③Check visually and manually whether the wire harness connector is connected reliably and whether the positive pole and negative pole are connected reversely.
④If the apparent reason of the problems is identified,then correct the mistake before taking the next step.
⑤If there is no obvious finding,use the diagnostic unit to diagnose the system.
Table 3.9 Visual Inspection Table
(2)Use the diagnostic unit to read the fault code stored in the airbag controller and identify the fault position and cause to do repairs.The procedures are shown in Table 3.10.
Table 3.10 Diagnostic Procedures of Diagnostic Unit
Note:
After removing the fault,the fault clearance operation must be done.
2)SRS Maintenance Precautions
No Damaging the Gas Generator
No Pulling the Wire Harnes s
No Electrifying Safety Airbag Assembly or Gas Generator
No Moving Safety Airbag Assembly Like This(https://www.daowen.com)
No Measuring the Connector Like This or Electrifying the Connector
No Cutting the Wire or Damaging the Connector Lug
No Putting Other Things on the Face of Airbag Assembly
No Putting the Terminal Face of Airbag Assembly Downward
No Being Exposed to Water or Other Liquids
No Cutting the Wire or Damaging the Connector Lug
No Being Close to High Temperature Heat Source
No Dropping the Airbag From Up High
No Tapping the Controller with Wrench or Hammer
During Dismantling Process,No Facing the Airbag
3)SRS Configuration
After repairing,the safety airbag needs configuration.
(1)Make sure every safety airbag and safety airbag controller are installed in place and the connectors of safety airbag,safety airbag controller and seat belt with precaution function are installed in place.
(2)Use the diagnostic unit to operate the safety airbag configuration and reset.