(4) Check the wiring harness between helix cable and electronic control unit of safety airbag system
a. Set ignition switch at LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Disassemble glove box (with safety airbag assembly at the side of passenger),
d. Loosen the connector of safety airbag assembly at the side of passenger,
e. Disassemble left inner trim board,
f. Loosen the connectors of all safety airbag system units,
g. Check the wiring harness between connector pole of safety airbag system unit and helix cable
connector pin.The wiring harness between safety airbag system at the side of passenger unit con-
nector pin and helix cable connector pin has following situation:
Earth
Short connection with power supply
Short circuit
h. Are the wiring harnesses above normal?
i. Normal: malfunction diagnosis ends, assemble all parts
j. Abnormal: change the wiring harness.
6. Malfunction at the side of passenger
Diagnostic procedure
(1) Check the connector of safety airbag assembly at the side of passenger
If the treatment is wrong, safety airbag assembly and pre-tension safety belt might be triggered to
unfold to make heavy human hurt, so, before the treatment, it is necessary to read repairing
warnings carefully.
Refer to repairing warning of safety airbag system.
Malfunction of safety airbag at the side of passenger (resistance is too big or too
small, short circuit, grounding and so on)
Test condition
Warning
If the treatment is wrong, safety airbag assembly and pre-tension safety belt might be
triggered to unfold to make heavy human hurt, so, before the treatment, it is necessary
to read repairing warnings carefully. Refer to repairing warning of safety airbag system.
The resistance between connector pin 13 and pin 14 of safety airbag system unit is not
in regulated scope.
The wiring harness between connector pin 13 and pin 14 of safety airbag system unit
happens short circuit.
Possible reason
Safety airbag assembly at the side of passenger has malfunction.
Connector between safety airbag assembly at the side of passenger and electronic con-
trol unit of safety airbag system has malfunction.
Connector between safety airbag system unit and grounding position has malfunction.
The circuit between safety airbag assembly at the side of passenger and electronic
control unit of safety airbag system happens open circuit or short circuit.
Circuit between safety airbag system unit and grounding position happens open circuit
or short circuit.
Safety airbag system unit has malfunction.
Supplemental restraint system--Remove malfunction
256
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