2000 MITSUBISHI MONTERO Service Repair Manual

S
pecia lp atte rn s P
atte rn heig ht L
ow P
atte rn se le cto r D
is p la y E
ngin e r/m in I
d le sp eed

S
pecia lp atte rn s P
atte rn heig ht L
ow P
atte rn se le cto r D
is p la y E
ngin e r/m in I
d le sp eed

T
w o engin e re vo lu tio ns (O ne ca m sh aft re vo lu tio n)
7 5 _B TD C
5_B TD C T
No.5 TD C N
o.6 TD C
W ave Patte rn Observ atio n Poin ts
C heck th at cycle tim e T beco m es sh orte r when th e engin e sp eed in cre ase s.
E xam ple s of Abnorm al W ave Patte rn s
D Exa m ple 1
C au se of pro ble m
S enso r in te rfa ce malf u nctio n
W ave patte rn ch ara cte ris tic s
R ecta ngula r w ave patte rn is outp ute ve n when th e engin e
i s not sta rte d.
D Exa m ple 2
C au se of pro ble m
L oose tim in g belt
A bnorm alit y in se nso r dis k
W ave patte rn ch ara cte ris tic s
W ave patte rn is dis p la ce d to th e le ft or rig ht.

S
pecia lp atte rn P
atte rn heig ht L
ow P
atte rn se le cto r D
is p la y E
ngin e r/m in I
d le sp eed (
V ) I
n je cto r
o pen cir c u it
c h eck sig nal I
n je cto r
d riv e sig nal (
m s)
W ave Patte rn Observ atio n Poin ts
D Check th at th e in je cto r driv e tim e is id entic a l to th e tim e
d is p la ye d on th e MUT-I I.
D Check th at th e in je cto r sig nals beco m e gre atly exte nded
b ut so on re tu rn to th eir norm al wave le ngth when th e
e ngin e is su ddenly ra ce d.
D Check th at th e in je cto r open cir c u it ch eck sig nal is
s yn ch ro niz e d wit h each ris in g portio n of th e in je cto r driv e
s ig nal. N
orm alw ave
p atte rn

S
pecia lp atte rn s P
atte rn heig ht L
ow P
atte rn se le cto r D
is p la y E
ngin e r/m in A
ppro x. 1 ,2 0 0 r/m in C
ra nk angle se nso r
o utp utw ave patte rn P
ow er tr a nsis to r
c o ntr o lsig nalw ave
p atte rn
OFF
ON
P
oin t w ave built - u p se ctio n
D ow eld iv is io n (
m s)
T
: R evo lt io n tim eco rre sp ondin g
t o a cra nk angle of1 20
4
0
0 (
V )
2 4
6
2
6
qq
:S
park adve nce angle C
om pre ssio n to p dead ce ntr e S
pecia l
p atte rn s
p ic ku p A
naly ze r
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

P
ro bable ca use R
is e s fr o m appro x. 2V to appro x. 4.5 V at th e to p-rig ht N
orm al 2
V re cta ngula r w ave O
pen-c ir c u it in ig nit io n prim ary cir c u it R
ecta ngula r w ave at pow er vo lt a ge P
ow er tr a nsis to r m alf u nctio n V
B
-
-- N orm alw ave patte rn
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

S
pecia lp atte rn s P
atte rn heig ht H
ig h P
atte rn se le cto r D
is p la y E
ngin e co ndit io n W
hen th e engin e co ola ntte m pera tu re is 20_
C or belo w ,tu rn th e ig nit io n sw it c h fr o m OFF
t o ON (w it h out sta rtin g th e engin e). W
hile th e engin e is id lin g, tu rn th e A/C sw it c h to ON. I
m media te ly afte r sta rtin g th e warm engin e S
pecia l
p atte rn s
p ic ku p A
naly ze r
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

P
ro bable ca use I
n duce d ele ctr o m otiv e fo rc e does not appear or is extr e m ely sm all. M
oto r is m alf u nctio nin g P
ro bable ca use C
oil re ve rs e ele ctr o m otiv e fo rc e does not appear or is extr e m ely sm all. S
hort in th e co il