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.
251
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 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
(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
282
Panel/combination instrument--combination instrument
(1) Disassemble fuel meter joints or break wire, when indictor is at E, fuel indictor does not light.
(2) Jumper a 300-330
resistor from the corner of terminal1 and termianl2, turn ignition switch to ON,
indictor is at E line, the indictor light lights.
6. Inspect generator water thermometer .
(1) Disassemble joint of generator water thermometer
(2) Turn ignition switch to ON, inspect indictor position of gen-
erator water thermometer.
Indictor position: COOL
(3) Earth 2 terminal of the wiring harness side joint to inspect
indictor position of generator water thermometer.
Indictor position: HOT
1 2 3
7. Inspect untied indictor light of driver seat belt.
(1) Turn ignition switch to ON, Inspect untied indictor light of driver seat belt lights.
(2) Tie the seat belt, inspect untied indictor light seat belt lights off.
(3) Disassemble the joint of safe belt button switch, earth the terminals of wiring harness
(4) Turn ignition switch to ON, inspect untied indictor light seat belt lights on.
8. Inspect low oil pressure indictor
(1) Disassemble the joint of oil pressure switch.
(2) Turn ignition switch to ON.
(3) Earth terminals of wiring harness sides, inspect low oil pressure indictor.
Low oil pressure indictor: light
9. Inspect oil pressure switch
(1) disassemble joints of oil pressure switch,
(2) Inspect the conduction of oil pressure switch terminals and earth.
Generator extinguishes: conduction
Generator works: not conduction
10. Inspect light warning buzzer
(a) Inspect the function of light warning buzzer
Clues on: light warning buzzer works together, only key
reminding buzzer works.
(1) Front combination light switch switches to ON, extract the
key, open driver seat door, inspect light warning buzzer.
Audio buzzer: Audio for 10 seconds in the night to cut
lamp power, in the day cut the lamp instantly.
(2) When buzzer works, do any one of the followings, inspect whether buzzer stop buzzing.
z z z z
zTurn front combination switch to OFF.
z z z z
zClose driver seat door.
z z z z
zInsert the key.
Buzzer Light switch
Key warning
switch
Pull out the key
Open driver door
337
Panel/combination instrument--combination instrument
(b) Inspect light warning buzzer function
(1) Disassemble combination instrument.
(2) Connect battery positive wire to terminal A5 and nega-
tive to terminal A1 and A2.
(3) Connect battery positive wire to terminal A18 and nega-
tive to terminalA17,inspect buzzer.
Audio buzzer: long buzzes
(4) When buzzer works, connect battery positive wire to ter-
minal A4,inspect whether buzzer stop working.
11. Inspect key buzzer
(a) Inspect when key buzzer and light warning buzzer works
together, only key buzzer works.
(1) Insert the key, when driver seat door opens, turn ignition
switch to OFF (LOCK or ACC). inspect key buzzer works
1HZ discontinuously.
(b) inspect key buzzer function
(1) Disassemble combination instrument.
(2) Connect battery positive wire to terminal A5 and nega-
tive to terminal A1 and A2.
(3) Connect battery negative wire to terminal A17 and B8,
inspect buzzer which should work discontinuously.
(4) When buzzer works, connect battery positive wire to ter-
minal A4,inspect whether buzzer stop working.
12. Inspect brake system indictor
(a) Inspect parking brake system indictor
Key warning
switch
Key switch
1G gear
Pull out the key
Open driver door
Buzzer
B8
B1
A1A20
(1) Disassemble the joint of parking brake switch, and earth terminals of wiring harness side joints.
(2) Turn ignition switch to ON, inspect brake system indictor light lights.
(b) Inspect brake oil level indicator light
(1) Disassemble the joint of brake oil level indicator light, connect terminal of wiring harness side
joints.
(2) Turn ignition switch to ON, inspect brake system indicator light lights.
338