Supplemental restraint system--Remove malfunction
Remove malfunction
Malfunction table
lThe voltage disappears (fuse is cut off)
l Combination instrument happens malfunction
lWiring harness between instrument package
and ECU unit has malfunction Malfunction Test statePossible reason
Indicating light of
safety airbag
system does not
illuminateWarning circuit of safety
airbag system happens
malfunction
1. Indicating light of safety airbag system does not illuminate
Diagnostic procedure
When making first malfunction test, we advise shaking wiring harness and plug to test whether there is
discontinuous bad contact in wire, if having this problem, please verify whether the connection of plug, terminal
and wiring harness is correct and is not damaged, if it is not this problem, please make by next step.
(1) Check other wiring harnesses and indicating lights of instrument package
a. Set ignition switch at ON position,
b. Are other warning indicating lights illuminating?
If illuminating: set ignition switch on LOCK position, then make next operation.
If not: check the power supply system and grounding system of instrument package (fuse), then
make step 5.
(2) Check the bulb
Warning: wrong treatment for safety airbag system parts will incur safety airbag and pre-
tension safety belt are opened accidentally, this might happen heavy accident. Please read
service warning of safety airbag system before disposing safety airbag parts.
a. Set ignition switch at LOCK position,
b. Cut off cathode wire of battery and keep this state for 60 seconds at least,
c . Disassemble combination instrument,
d. Measure whether corresponding two pins of indicating light of safety airbag could conduct,
Yes: make next step,
No: change the bulb of indicating light.
(3) Check the wiring harness connection between ECU unit and instrument package .
a. Set ignition switch at LOCK position,
b. Cut off cathode wire of battery,
c . Cut off the plug of instrument package ,
d. Check whether corresponding circuit of indicating light could conduct,
Yes: make next step,
No: change the wiring harness, then make step 5.
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Number Malfunction removing itemSpecification
1 Indicating light of safety airbag system does not illuminate Warning circuit of safety airbag system happens malfunction
2 Indicating light of safety airbag system illuminates usually Warning circuit of safety airbag system happens malfunction or
there is exterior malfunction
Light--Light SystemThe phenomena table1. front combination lights and tail lightPhenomena
Only one front combination light
lights
Low beam headlights do not light
(all)
distance lights do not light (all)
Distance light do not light (one
side)
Flare does not light
Front combination lights are too
dark
Only one rear combination light
lights
Rear combination lights do not light
(front combination lights are normal)
Rear combination lights do not light
(front combination lights are abnormal)Reference pages
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-LightLight SystemNotes1. Notes for changing the front combination bulb(a) When the surface of halogen bulbs (the bulb of front assembled headlamp and front fog light) touches
oil, their working life will be shorten. When it lights, it becomes hot.
(b) Because of pressured gas in halogen bulbs (the bulb of front assembled headlamp and front fog
light), the bulb may explode and pieces of broken glass disperse around. So deal with it carefully.
(c) If the time after disassembling the bulb from lamp carrier is too long, the mirror may be polluted by
dirties or hydrosphere. You should prepare a new bulb,then replace it.
(d) Replace it with the lamp of same wattage.
(e) Assemble the changing bulb on the lamp carrier firmly, or it may bring mirror mirage or water intrusion.
(f) Do not touch the black of the top of glass, or it may shorten its working life.Possible part
1.bulb
2.fuse
3.wiring harness
1.fuse
2.relay
3.left combination switch
4.wiring harness
1.fuse
2.relay
3.left combination switch
4.wiring harness
1.bulb
2.wiring harness
1.left combination switch
2.flare
3.wiring harness
1.bulb
2.wiring harness
1.bulb
2.wiring harness
1.bulb
2.wiring harness
3.left combination switch
4.wiring harness
1.fuse
2.relay 279
Light--Light System 280 2. Fog light System
3. Turning and emergency warning light systemEmergency warning light and turn
light does not light
Emergency warning light does
not light (turning light is normal)
Turn light does not light
(Emergency warning light is normalSide turning light does not light
(warning light is normal)
One side of turning light does not
light
One side of turning light does not
light
Only one bulb does not light1. (meter) fuse
2. (turn) fuse
3. ignition switch
4. flasher assembly
5. wiring harness
1. Emergency warning light switch
2. wiring harness
1. turn light switch
2. wiring harness
1. turn light switch
2. wiring harness
3. bulb
1. turn light switch
2. wiring harness
3. bulb
1. turn light switch
2. wiring harness
1. bulb
2. wiring harnessThe light control switch switches on,
the front fog lights do not light (front
combination lights are normal)Lamp switch turn to “HEAD”. front fog
lights do not light (front combination light
do not light)Only one front fog light do not light
Rear fog lights do not light (front
combination lights are normal)
(front fog lights are normal)
Rear fog lights do not light (front fog
lights do not light)1.(front fog light)fuse
2.fog light relay
3.fog light switch
4.wiring harness
1.other parts
2.wiring harness
1.bulb
2.wiring harness
1.fuse
2.rear fog light switch
3.wiring harness
4.bulb
1.other parts
2.wiring harness
3.bulb
4.front fog light switch
5.rear fog light switchphenomena
Possible part
Reference pagesphenomena
Possible partsReference pages
Light--Light System
All lights do not light
When driver cap side door opens,
the light does not light
When right front door opens, the
light does not light
When right rear door opens, the
light does not light
When left rear door opens, the light
does not light
Only one light can light
After all doors are closed, illuminat-
ing lamp will not flame out gradually.
After all doors closed, the head lamp
does not light in 15 seconds, when
turn ignition switch to ACC or ON.
Driver side light or passenger cap
side light do not light
When Driver side door opens,
driver side light does not light
When Passenger side door opens,
passenger side light does not light1. (room light) fuse
1. driver cap side door control switch
2. wiring harness
3. bulb
1. right front door control switch
2. wiring harness
3. bulb
1. right rear door control switch
2. wiring harness
3. bulb
1. left rear door control switch
2. wiring harness
3. bulb
1. bulb
1. Door-control switch
2. Wire harness
1. ignition switch
2. fuse
3. light relay
4. wiring harness
1. (door) fuse
2. (meter) fuse
3. light relay
4. driver side door control switch
5. bulb
6. wiring harness
1. driver side door control switch
2. wiring harness
3. bulb
1. passenger side door control switch
2. wiring harness
3. bulb
4. Room lights system
Inspect the car
1. inspect turning flasher wiring
(a) Disassemble joint from turning flasher and inspect wiring
harness side joint as following table.
phenomena
Possible partsReference pages
281
(b) Inspect function of rear fog light.
(1) Turn the ignition switch to ON.
(2) Inspect rear fog light’s situation when every switch works, just as following table.
Light--Light System
(b) Connect joint to directional switch and inspect from wiring harness’s side joint as following table:
Avometer terminals
2-earth
2-earth
3-earth
3-earth
5-earth
6-earth
8-earthcondition
warning light switch OFF → ON
turn light switch (right) OFF → ON
warning light switch OFF → ON
turn light (left) switch OFF → ON
turn light(left) switch OFF → ON
turn light(right) switch OFF → ON
warning light switch OFF → ONregular situation
0V → 0 ⇔ 9Vevery min 60 to 120 times
0V → 0 ⇔ every min 60 to 120 times
0V → 0 ⇔ 9Vevery min 60 to 120 times
0V → 0 ⇔ 9Vevery min 60 to 120 times
over 9V → 0V
over 9V → 0V
over 9V → 0V
2. Inspect rear fog light switch
(a) inspect rear fog light wiring
(1) Disassemble the joint from switch sides and inspect the
joint from wiring harness as following table.
Avometer terminals
1-earth
2-earth
3-earth
5-earth
6-earth
7-earthcondition
normal
light control switch OFF → ON
normal
light control switch OFF → ON
front fog light switch OFF → ON
normalregular situation
conduct
ion
0V → 10-14V
10-14V
not conduct
ion → conduction
not conduction→ conduction
conduction
Situation
Light switch OFF → ON, front fog light switch OFF
Light switch OFF → ON, front fog light switch ON, rear fog light switch ONrear fog light working situations
rear fog light does not light
rear fog light lights
3. Inspect lighting system function
Clues on: key aperture lamp and room light.
Avometer terminals
7-earth
1-earth
1-earth
4-earthcondition
normal
turn light switch ON
turn light switch ON
normalregular situations
conduct
ion
battery voltage
no voltage
battery voltage
Wiring
harness side
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Light--Light System
(a) Turn the ignition switch to OFF and open all doors, then lock driver cap side door.
(b) Unlock the drive’s side door and open any door, then inspect whether room light lights. Close the door
and inspect whether room light lights off in 15 seconds.
(c) Turn ignition switch to ON, then open any door to inspect whether room light lights off immediately.
(d) Turn ignition switch to OFF.
(e) Open or close any door to light room light. Turn ignition switch to ON before room light turns off(about
15seconds) to inspect whether room light turns off immediately.
(f) Turn ignition switch to OFF.
(g) Open or close any door to light room light. Lock driver cap side door before room light turns off(about
15seconds) to inspect whether room light turns off immediately.
Inspect
1. Front combination headlight dimmer switch
assembly
(a) Inspect the conduction of light control switch
(1) Inspect switch on every positions, the conduction among
terminals as following table.
Switch positionsAvometer terminalsregular situations
OFF - not conduction
Position light12-6conduction
Lamp12-6conduction
Lamp7-10conduction
(b) Inspect conduction of front assembled dimmer switch
(1) Inspect switch on every parts, the conduction among terminals as following table.
Switch positionsAvometer terminalsregular situations
Flasher 11-10conduction
Low beam light9-10conduction
Distant light7-10conduction
(c) Inspect the conduction of turning light switch
(1) Inspect switch on every positions, the conduction among terminals as following table.
Switch positionsAvometer terminalsregular situations
Turn right 4-5conduction
neutral -not conduction
turn left 4-3conduction
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