MITSUBISHI MONTERO 2000 Service Repair Manual

P
ro be se le ct sw it c h T
IM E/D IV . 1
0 m s V
O LT S /D IV . 2
V A
C -G ND -DC D
C O
th er -
E
ngin e r/m in I
d le sp eed

B
TD C35 _ B
TD C9_
AT D C
1 2 _
T
E xp la n atio n of W ave Patte rn
T he cra nk angle se nso r dete cts th e ro ta tio n of a se nsin g pla te . Acco rd in gly , th e perio d T (s e co nds) ca n
b e measu re d and th e engin e sp eed ca n be ca lc u la te d fr o m th e fo llo w in g fo rm ula .
E ngin e sp eed (r/m in ) = 2
4 T (s e c) ×
60 = 3
0
T (s e c)
W ave Patte rn Observ atio n Poin ts
C heck th at cycle tim e T beco m es sh orte r and th e fr e quency in cre ase s when th e engin e sp eed is in cre ase d.
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
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.

P
ro be se le ct sw it c h S
eta cco rd in g to th e pro be. T
IM E/D IV . A
bout1 0 m se c V
O LT S /D IV . A
bout0 .5 V A
C -G ND -DC D
C E
ngin e r/m in I
d le sp eed

2
4 × T (s e c) ×
60
W ave Patte rn Observ atio n Poin ts
C heck th at cycle tim e T beco m es sh orte r and th e fr e quency in cre ase s when th e engin e sp eed is in cre ase d.
E xam ple s of Abnorm al W ave Patte rn s
D Exa m ple 1
C au se of pro ble m
M alf u nctio n or open cir c u it in se nso r
W ave patte rn ch ara cte ris tic s
N o sig nal is outp ut eve n when engin e is sta rte d.
D Exa m ple 2
C au se of pro ble m
I n co rre ct gap betw een se nso r and se nsin g gear pla te
W ave patte rn ch ara cte ris tic s
N o sig nalis outp ut eve n when engin e is sta rte d, or sig nal
a m plit u de is sm all.

O
N-V EH IC LE SER VIC E
I N JE C TIO N TIM IN G CHEC K AND
A DJU STM EN T
R efe r to GRO UP 11 B -Engin e Adju stm ent.
I D LE SPEED CHEC K AND ADJU STM EN T
R efe r to GRO UP 11 B -Engin e Adju stm ent.
I N JE C TIO N NO ZZLE CHEC K AND
A DJU STM EN T
C au tio n
N ever to uch th e in je ctio n sp ra y th at is in je cte d fr o m th e
n ozzle .
F U EL IN JE C TIO N IN IT IA L PR ESSU RE CHEC K
1 . In sta ll th e in je ctio n nozzle to anozzle te ste r.
2 . Move th e le ve r of th e nozzle te ste r 2 -3 tim es to in je ct
f u el and to ble ed th e air .
3 . Gently pre ss dow n th e le ve r of th e nozzle te ste r, and
t a ke are adin g of th e in dic a tio n va lu e on th e pre ssu re
g auge at th e poin t where th e needle slo w ly ris e s and
t h en su ddenly dro ps.
S ta n dard valu e (F uel in je ctio n in it ia l pre ssu re ):
1 4,7 10 -15,4 90 kP a
4 . If th e fu elin je ctio n in it ia lp re ssu re is outs id e th e sta ndard
v a lu e, dis a sse m bly th e nozzle hold er to cle an it , and
t h en ch ange th e th ic kn ess of th e sh im to adju st th e fu el
i n je ctio n in it ia l pre ssu re .
N O TE
( 1 ) For dis a sse m bly , re asse m bly and adju stm ent of th e
n ozzle hold er, re fe r to P.1 3B -8 .
( 2 ) There are 10 sh im s fo r adju stm ent, w it h th ic kn esse s
i n th e ra nge of 0.1 0 -0.8 0 mm.
( 3 ) W hen th e sh im th ic kn ess is in cre ase d by 0.1 mm,
t h e fu el in je ctio n in it ia l pre ssu re in cre ase s by 2,3 50
k P a.
I N JE C TIO N SPR AY CO NDIT IO N CHEC K
1 . Move th e le ve r of th e nozzle te ste r ra pid ly (4 -6 tim es
p er se co nd) to eje ct th e fu el co ntin uously . C heck to be
s u re th at th e in je ctio n sp ra y co m es out eve nly in a co ne
s h ape (in je ctio n sp ra y angle is 0_). The in je ctio n sp ra y
p atte rn s sh ow n in th e illu str a tio n at le ft are wro ng.
A . In je ctio n angle is to ol la rg e
B . Bia s
C . In te rm it te nt fu el in je ctio n

C
onnecto r at th e
e quip m ent A
cce le ra to r
p edal A
PS M
B991658
w
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P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

B
atte ry vo lt a ge N
orm al
c o natio n 2
-4 N
ota pplie d C
ontin uit y 1
-3 N
ota pplie d N
o co ntin uit y C
onnect a posit iv e batte ry
c a ble to No.2 te rm in al and a
n egativ e batte ry ca ble to No.4
t e rm in al, re sp ectiv e ly . C
ontin uit y R
esis ta nce sm ooth ly
c h anges in pro portio n to th e
t r a ve l of th e acce le ra to r
p edal. F
ully clo se d
s to pper A
dju stin g scre w A
PS C
le ara nce A C
onnecto r at th e
c o ntr o lre pla y C
ontr o lre la y A
PS C
onnecto r at th e
e quip m ent A
cce le ra to r
p edal w
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P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

C
ontin uit y S
te p on N
one R
ele ase Y
es R
esis ta nce va lu e (k Ω ) R
is in g B
eco m esm alle r A
cce le ra to r
p edal A
PS B
oost air te m pera tu re
s e nso r B
oost air te m pera tu re
s e nso rw
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H
and pum p W
ate r le ve lse nso r
w
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P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

C
hanges sm ooth ly in
p ro portio n to th e negativ e
p re ssu re A
ir plu g E
quip m ent
s id e co nnecto r E
G R va lv e
p osit io n
s e nso r
w
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