belt MITSUBISHI MONTERO 2000 Service Workshop Manual

S
EC O ND/T H IR D SEAT BELT
R EM OVA L AND IN STA LLA TIO N

52B-1
SUPPLEMENTAL
RESTRAINT
SYSTEM (SRS)
CONTENTS
GENERAL 2.................................
SRS SERVICE PRECAUTIONS 3..............
SPECIAL TOOLS 5...........................
TROUBLESHOOTING 6.......................
POST-COLLISION DIAGNOSIS 10.............
INDIVIDUAL COMPONENT SERVICE 11.......WARNING/CAUTION LABELS 11..............
SEAT BELT WITH PRE-TENSIONER 12.......
SEAT BELT PRE-TENSIONER DISPOSAL
PROCEDURES 14............................
Undeployed Seat Belt Pre-tensioner Disposal 14..
Operated Seat Belt Pre-tensioner Disposal
Procedures 18.................................
CAUTION
DCarefully read and observe the information in the SRS SERVICE PRECAUTIONS (P.52B-3.) prior to any service.
DFor information concerning troubleshooting or maintenance, always observe the procedures in the Troubleshooting
(P.52B-6.) section.
DIf any SRS components are removed or replaced in connection with any service procedures, be sure to follow the
procedures in the INDIVIDUAL COMPONENT SERVICE section (P.52B-11.) for the components involved.
DIf you have any questions about the SRS, please contact your local distributor.


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G
EN ER AL
O UTLIN E OF CHANG ES
D Ase rv ic e pro ce dure has been esta blis h ed as se at belt s wit h pre -te nsio ner have been added.
D The sid e im pact se nso r cir c u it has been ch anged. The se nso r se rv ic e pro ce dure is th e sa m e as
b efo re .
S EAT BELT WIT H PR E-T E N SIO NER
C au tio n
N ever dis assem ble th e seat belt wit h
p re -te n sio ner.
T he driv e r’s and passe nger’s se at belt
p re -te nsio ners ta ke up se at belt sla ck im media te ly
w hen a co llis io n ta ke s pla ce , th us re str a in in g th e
p re -te nsio ners on th e se ats sim ult a neously wit h
t h e SR S air bags. th is im pro ve s th e passiv e sa fe ty .
w hen th e G se nso r in th e SR S-E C U dete cts im pact
a bove a ce rta in le ve l durin g a co llis io n, th e
p re -te nsio ner opera te s as fo llo w s: 1
. The ig nit in g heate r heats up acco rd in g to th e
s ig nal fr o m th e SR S-E C U.
2 . th is ig nit e s th e gas genera nt and exp lo siv e gas
w ill be genera te d.
3 . The str ip is push ed outw ard s by th e gas
p re ssu re . A s th e str ip wound aro und th e clu tc h
s le eve is pulle d out, th e clu tc h sle eve ro ta te s
a t hig h sp eed.
4 . The clu tc h sle eve ro ta te s to win d th e webbin g.
B efo re co llis io n I
n amom en t of co llis io n W
ebbin g G
as genera nt G
as genera nt B
and C
lu tc h sle eve
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C
onsta nt
v o lt a ge
c ir c u it
A nalo g G -s e nso r
M
ic ro co m pute r
Mic ro co m pute r I
n te rfa ce
c ir c u it S
id e im pact se nso r
S R S SER VIC E PR EC AUTIO NS
1 . In ord er to avo id in ju ry to yo urs e lf or oth ers
f r o m accid enta l deplo ym ent of th e air bag and
a ccid enta l opera tio n of th e se at belt wit h
p re -te nsio ner durin g se rv ic in g, re ad and
c a re fu lly fo llo w all th e pre ca utio ns and
p ro ce dure s describ ed in th is manual.
2 . Do not use any ele ctr ic a l te st equip m ent on
o r near SR S co m ponents , exce pt th ose
s p ecif ie d on G.5 2B -6 .
3 . Never Atte m pt to Rep air th e Follo w in g
C om ponen ts :
D SR S air bag co ntr o l unit (S R S-E C U)
D Clo ck sp rin g
D Driv e r’s and fr o nt passe nger’s air bag
m odule s
D Sid e air bag module s
D Fro nt im pact se nso rs
D Sid e im pact se nso rs
D Seat belt wit h Pre -te nsio ner N
O TE
I f any of th ese co m ponents are dia gnose d as
f a ult y , th ey sh ould only be re pla ce d, in
a cco rd ance wit h th e IN DIV ID UAL
C O M PO NEN TS SER VIC E pro ce dure s in th is
m anual, sta rtin g at page G.5 2B -2 6.
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D
estin atio n ofh arn ess C
orre ctiv e actio n 2
7,2 8 F
lo or wir in g harn ess → Seat belt wit h pre -te nsio ner (F ro nt
p asse nger’s sid e) C
orre ct or re pla ce each wir in g
h arn ess. 2
9,3 0 F
lo orw ir in g harn ess → Seatb elt w it h pre -te nsio ner (D riv e r’s sid e)

P
ro bab le cau se T
ro uble ca use s 2
6 2
7 6
6 6
7 C
heck tr o uble sym pto m s. N
G C
heck wir in g harn ess betw een th e driv e r’s sid e pre -te nsio ner and
S R S-E C U.
Rep air R
epla ce SR S-E C U. N
G
N G R
epla ce th e driv e r’s sid e se at belt wit h pre -te nsio ner. Y
ES N
O D
um my re sis to r
( M B991865)
r e sis ta nce (3 Ω ) R
esis to r harn ess
( M B991866)
D riv e r’s sid e pre -te nsio ner
c o nnecto r
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P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

SRS -Post-collision Diagnosis52B-10
POST-COLLISION DIAGNOSIS
Check and service the vehicle after collision as follows
regardless of the operation of the pre-tensioner:
SRS-ECU MEMORY CHECK
The check procedure is the same as before.
REPAIR PROCEDURE
WHEN PRE-TENSIONER OPERATES IN A COLLISION.
1. Replace the following parts with new ones.
DSRS-ECU
DFront impact sensor
DSeat belt with pre-tensioner (Refer to P.52B-12.)
2. Check harnesses for binding, connectors for damage,
poor connections, and terminals for deformation.
UNDEPLOYED AIR BAGS IN LOW-SPEED COLLISION
Check the SRS-ECU and Front impact sensor and Seat belt
with pre-tensioner. If visible damage such as dents, cracks,
or deformation are found on the the SRS-ECU and Front
impact sensor and Seat belt with pre-tensioner, replace them
with new ones. Concerning parts removed for inspection,
replacement with new parts and cautions in working, refer
to INDIVIDUAL COMPONENT SERVICE.
SRS-ECU
The check procedure is the same as before.
Front impact sensor
The check procedure is the same as before.
Seat belt with pre-tensioner
1. Check the seat belt for damage or deformation.
2. Check the pre-tensioner for cracks or deformation.
3. Check that the unit is installed correctly to the vehicle
body.


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