Maintenance of electrical applicances
22-68
(2) The fault description and the handling mode
① The safety air bag alarm light has no indication.
The possible causes:
No power supply is provided (The fuse is broken)
The combined instrument fault (The alarm light is damaged)
The wiring harness between the instrument and the safety air bag system has fault
The maintenance process:
Fig. 7.3 The maintenance process for the safety air bag alarm light
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.
Check the power supply
for the combined
instrument and safety
air bag system
Check the power supply
for the combined
instrument and safety
air bag system
The safety air bag
alarm light is not on
No
No
No
No
Yes
Yes
Yes
Yes
Check the safety air bag
alarm light
Is the alarm light good
Change the combined
instrument
Check the wiring harness
connection for safety air bag
and combined instrument
Newly connect the
plug connector
Is the wiring harness
plug connector strong
Check the wiring
harness
The wiring harness is
all in conduction
Change the wiring
harness
Completion
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