DongFeng H30, Manual, Page: 218 / 302

Maintenance of electrical applicances
22-69
②
The fault of the driver air bag
The possible causes:
 The trunk line connection fault between the safety air bag control module (ACU) and the safety
air bag system assembly wiring harness
 The fault of the safety air bag trunk line wiring harness
 The connection fault for the safety air bag trunk line wiring harness and the rotating connector
 The internal fault of the rotating connector.
 The connection fault for the rotating connector and the driver’s safety air bag module.
 The fault of the driver’s safety air bag module.
The maintenance process:
Fig. 7.4 The maintenance process for the driver side safety air bag
After the end of the maintenance, newly inspect the system with the fault diagnostic apparatus, its
inspection process refers to Fig. 7.2 The inspection of the safety air bag system.
The driver air
bag in fault
Is the connection for ACU
and air bag wiring harness
plug connector strong and
reliable
Newly connect the
plug connector
Newly connect the
plug connector
Newly connect the
plug connector
The safety air bag wiring
harness is all in
conduction
Change the safety air
bag wiring harness
Is the connection for the
safety air bag wiring
harness and rotating
connector strong and
reliable
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Change the rotating
connector
Is the internal wiring
harness for the rotating
connector is normal
conducted
Is the connection for the
rotating connector and the
driver side generator
correct and reliable
Is the drive side
safety air bag
module normal
Completion
Change the driver
safety air bag module