A. THNG TIN CHUNG

I. THNG TIN K THUT Lm vic ni thong mt. Khng c php ht thuc, c la hoc tia la in ni lm vic hoc gn ni cha nhin liu c th dn n chy n

Trc khi tho ng xng phi gim p lc xng t h thng bng cch tho u ni tt bm xng. Cong hoc xon cp iu khin s lm km kh nng vn hnh v c th lm cho cp b vng hay b b li, dn n kt qu lm mt kh nng iu khin xe.

Dng thit b nung nng bng in nung nng cht lm mt kim tra cm bin ECT, gi vt liu d chy cch xa thit b nung nng bng in. Mang qun o bo h, gng tay cch in v knh bo v mt.

Khng c dng cht lm sch b ch ha kh c trn th trng lm sch hng ga. Khng c m bm ga t ng hon ton n m hon ton sau khi tho dy ga. iu ny c th lm sai tc cm chng ng c

Bt kn c ht bng bng keo hay vi sch bi bn khng lt vo ng c sau khi tho b thn bm ga

Khng lm h hng b thn bm ga. iu ny c th lm cho s vn hnh ca bm ga khng chnh xc.

Ngn bi bn i vo trong thn bm ga v ng ng np sau khi thn tho thn bm ga. Lm sch chng bng kh nn nu cn

Thn bm ga c iu chnh nh my. Khng c tho ri bng bt k mt cch no khc vi cch c minh ha trong sch hng dn ny

Khng c ni lng hay xit ai c mu trng v vt ca thn bm ga. Vic ni lng hay xit cht chng c th lm cho bm ga v tc cm chng khng chnh xc. Nhng b phn khng c ch ra trong sch hng dn th khng c tho ri.

Lun thay c b khi tho bm xng.

Mt h hng ca h thng PGM-FI c th lin quan n lng mi ni hay gic ni b mn. Kim tra cc gic ni trc khi tin hnh x l s c.

H thng PGM-FI c trang b h thng t chn on. Nu n bo s c(MIL) nhp nhy, tc l h thng t chn on pht hin h hng.

Khi kim tra h thng PGM-FI phi lun thc hin theo cc bc trong bng tm kim h hng.

H thng PGM-FI c cung cp chc nng an ton t kh nng vn hnh ti thiu khi c bt k vn no trong h thng. khi c bt k s khc thng no c pht hin bi chc nng t chn on, kh nng vn hnh ny t c bng cch dung nhng gi tr xc nh c ci t trong chng trnh. Tuy nhin iu ny phi c ghi nh, khi c bt k s khc thng no kim phun, chc nng an ton ngng ng c bo v ng c khng b hng. Xc nh v tr h thng PGM-FI

Khi tho ri nhng b phn ca h thng nhin liu, ch cc pht ch O. thay mi khi rp li

S dng thit b kim tra k thut s kim tra h thng PGM-FI.

Tham kho qu trnh kim tra cm bin mc xng

II. THNG S K THUT

McThng s k thut

S nhn bit s b thn bm gaGQR8A

Tc cm chng1700

Hnh trnh t do tay ga2 6mm (0,1 0,2in)

in tr cm bin ECT(40oC/104oF)1,0 1,3k

(100oC/212oF)0,1 0,2k

in tr kim phun (20oC/68oF)9 - 12

p sut nhin liu tc cm chng294 kPa (3,0 kgf/cm2, 43psi)

Lu lng bm xng(12V)120 cm3(4,1 US oz, 4,2 Imp oz)/10 giy

III. DU HIU S C TRN H THNG PGM-FI

Khi xe c mt trong nhng du hiu sau, n MIL nhp nhy, tham kho bng m li v bt u qu trnh x l s c. Nu li h hng khng c cha trong b nh ECM, tin hnh qu trnh chn on nhng du hiu h hng, tun t theo danh sch pha di cho n khi tm ra nguyn nhn.

Du hiuQuy trnh chn onKim tra

ng c quay nhng khng khi ng (n MIL khng nhp nhy)1. Quay ng c hn 10 giy v kim tra n MIL v tin hnh s l s c ty theo m li2. Kim tra h thng cung cp nhin liuKhng c nhin liu n kim phun Lc nhin liu b ngt

L thng hi lc b ngt

ng nhin liu b b hay b ngt

Bm xng hng

Mch bm xng hng

Kh np b r r

Nhin liu bi bn hay b bin cht

Kim phun b hng

Van IACV b kt

H thng nh la hng

ng c quay nhng khng khi ng (khng c m thanh hot ng ca bm xng khi bt cha kha ON)1. Mch ngun/mass ECM trc trc2. Kim tra h thng cung cp nhin liuH mch cp ngun hay dy mass ca ECMCu ch chnh t (15A)

Cht my, kh khi ng, cm chng khng m.1. Kim tra tc cm chng 2. Kim tra van IACV

3. Xem xt h thng cung cp nhin liu

4. Xem xt h thng np accung nhin liu b co hpL thng hi lc b ngt

Nhin liu b bn hay bin cht

R r kh np

L thng hi np thng xng b co hp

H thng nh la hng

Chy tr hay b la qu trnh tng tcKim tra h thng nh la

Tnh nng km (kh nng dn ng) v tiu hao nhin liuKim tra h thng cung cp nhin liung nhin liu b b hay b ngtB iu p hng (bm xng)

Kim phun hng

H thng nh la hng

Tc cm chng thp hn thng s k thut (n MIL khng nhp nhy)1. Kim tra tc cm chng2. Kim tra van IACVH thng cung cp nhin liu hngH thng nh la hng

Tc cm chng cao hn thng s k thut (n MIL khng nhp nhy)1. Kim tra tc cm chng2. Kim tra s vn hnh bm ga v hnh trnh t do tay ga

3. Kim tra van IACVH thng nh la hngR r kh np

Vn nh v y ng c

Tnh trng lc gi

n MIL sng hay n MIL khng sng (ng c hot ng bnh thng)Kim tra mch n MIL

n MIL sng (ng c hot ng bnh thng v khng c m li no )Kim tra mch DLC

B. H THNG PGM-FII. V TR H THNG PGM-FI

II. S H THNG PGM-FI

C. THNG TIN X L S C TRONG H THNG PGM-FII. M T H THNG1. H THNG T CHN ON

H thng PGM-FI c trang b h thng t chn on. Khi c bt k s khc thng no xy ra trong h thng, ECM bt n MIL sng v lu m li trong b nh xa c.2. M LI HIN THI/M LI LU TR

M li c hin th theo 2 cch ty theo tnh trng li.

Trong trng hp ti thi im ECM pht hin ra vn , n MIL nhp nhy ch ra m li. N c th c m li di dng nhp nhy ca n MIL. Trong trng hp ECM khng pht hin ra bt c vn no khi ang hot ng nhng c vn no c cha trong b nh th n MIL khng nhp nhy. Nu cn sa cha vn c ny, c th c m li lu tr bng quy trnh c m li

3. DNG TH N MIL

M li c th c bi dng th nhp nhy ca n MIL.

Trong trng hp ECM khng pht hin ra bt k vn no trong lc hot ng, khi xoay cha kha ON, n MIL sng trong vi giy sau ri tt.Trong trng hp ECM pht hin ra vn , khi cha kha bt ON th n MIL sng trong vi giy v tt, sau n MIL nhp nhy hin th m li no .

n MIL c 2 loi nhp nhy l nhp nhy di v nhp nhy ngn. Nhp nhy di khong 1,3 giy, nhp nhy ngn khong 0,3 giy. Mt nhp nhy di bng 10 nhp nhy ngn. V d khi c 2 nhy di km theo 5 nhy ngn th m li l 25 (2 nhy di=20 nhy cng them 5 nhy ngn)n MIL s nhp nhy khi cha kha bt ON hay tc ng c di 2200 vng/pht. Trong bt k iu kin no khc n MIL s sng v gi trng thi ON.

Nu n MIL khng sng hay gi trng thi sng khi bt cha kha sang ON th xem xt mch n MIL.

4. CHC NNG AN TON

H thng PGM-FI c cung cp chc nng an ton m bo kh nng vn hnh ti thiu khi c bt k vn no trong h thng. Khi c bt k s khc thng no c pht hin bi chc nng t chn on, kh nng vn hnh c duy tr bi gi tr c lp trnh trc trong chng trnh. Khi c bt k s khc thng no c pht hin kim phun hay cm bin v tr trc khuu (CKP) chc nng an ton s ngng ng c bo v ng c.

II. HIN TH M LI

1. M LI HIN THI

Dng xe bng chn chng ng v kim tra n MIL.

Khi cha kho bt ON, n MIL s sng trong vi giy sau tt, Nu n MIL sng hay nhp nhy th ch n MIL nhp nhy bao nhiu ln v xc nh nguyn nhn ca vn .

Nu n MIL khng nhp nhy, lc ny h thng vn hot ng bnh thng. Nu bn mun c m li lu tr th thc hin nh sau2. CCH C M LI LU TR

Bt cng tc my OFF.

Tho p thn pha trc.Tho gic ni DLC v s dng dng c c bit ni tt cc cc DLC

Dng c:

Gic ni SCS: 070PZ-ZY30100

Kt ni: brown green/black

Nu ECM khng c m li lu tr, n MIL s sng khi bn xoay cha kha sang ON.

Nu ECM c m li lu tr, n MIL s sng trong 0.3 giy v tt sau n MIL nhp nhy khi bt cng tt my ON.

Ch n MIL nhp nhy bao nhiu ln v xc nh nguyn nhn ca vn .

3. CCH XA M LI

Ch m li c lu trong b nh khng xa c bng cch ngt in bnh accu.1. Xoay cha kha sang OFF

2. Tho p thn pha trc.3. Tho gic ni DLC v s dng dng c c bit ni tt cc in cc ca DLC.

Gic ni SCS: 070PZ-ZY30100

Kt ni: brown green

4. Bt cha kha sang ON.

5. Tho dng c c bit khi DLC. Ni u ngn DLC vi u ni DLC li trong khi n MIL sng trong 5 giy ( th ang nhn ci t)

6. M li c lu trong b nh c xa nu n MIL tt v bt u nhp nhy.( th xa thnh cng) Gic DLC phi c ni tt khi n vn sng. Nu khng n MIL s tt v gi trng thi sng ( th xa khng thnh cng). Trong trng hp ny xoay cha kha sang OFF v thc hin li t bc 3.

Ch liu trong b nh t chn on khng c xa nu tt cng tt my trc khi n MIL bt u nhp nhy.

III. BNG M LI

MILH hng chc nngDu hiu/ Chc nng an ton

1Cm bin MAP hng

Gic ni cm bin MAP tip xc khng tt hay lng

Cm bin MAP hay mch in ca n hng ng c hot ng bnh thng

Gi tr c ci t trc: 481mmHg/614hPa

7Cm bin ECT hng

Gic ni cm bin ECT tip xc khng tt hay lng

Cm bin ECT hay mch in ca n hng Kh khi ng nhit thp

Gi tr c ci t trc: 83oC/181oF

8Cm bin TP hng

Gic ni cm bin TP tip xc khng tt hay lng

Cm bin TP hay mch in ca n b hng Qu trnh tng tc km Gi tr c ci t trc: 0o

9Cm bin IAT hng Gic ni cm bin IAT tip xc khng tt hay lng

Cm bin IAT hay mch in b hng ng c hot ng bnh thng Gi tr c ci t trc; 35oC/95oF

12Kim phun hng Gic ni kim phun tip xc khng tt hay lng

Kim phun hay mch in hng ng c khng khi ng c Kim phun, bm xng v boobin ngng hot ng

21Cm bin O2 hng Gic ni cm bin tip xc khng tt hay lng

Cm bin O2 hay mch in hngng c hot ng bnh thng

29Van IACV hng Gic ni van IACV tip xc khng tt hay lng

Van IACV hay mch in b hngng c cht my, kh khi ng, cm chng khng u

D. X L S C

I. N MIL NHY 1 LN (CM BIN MAP)

Trc khi bt u kim tra nn kim tra gic ni b cm bin 5P (black) v gic ni ECM 33P (black) v kim tra li n MIL.1. Kim tra in p ngun ca b cm bin

Bt cng tc OFF. Tho gic ni 5P b cm bin. bt cha kha ON. o hiu in th gia

Ni: Y/O G/OTiu chun: 4,75 5,25V

Hiu in th c t 4,75 5,25V hay khng?

YES n bc 3

NO n bc 22. Kim tra mch in b cm bin

Bt cha kha sang OFF. Tho gic ni 33P ECMKim tra thng mch gia u ni 5P ca b cm bin vi u ni 33P ca ECM

Ni: Y/O Y/O G/O G/OTiu chun: thng mch

S kim tra trn c bnh thng khng?

YES: thay th ECM mi v kim tra li

NO: H mch dy Y/O H mch dy G/O3. Kim tra in p ngun cm bin MAP

Bt cng tc my ON. o hiu in th gia u ni 5P vi mass

Ni: Y/R(+) mass(-)

Tiu chun: 4,75 -5,25V

Hiu in th o c c t 4,75 5,25V khng?

YES: thay mi b cm bin v kim tra li (cm bin MAP hng)NO: n bc 44. Kim tra dy tn hiu ng ra ca cm bin MAP

Bt cng tc my OFF. Tho u ni 33P ca ECM.

Kim tra thng mch gia u ni 33P ca ECM vi u ni 5P ca b cm bin.

Kim tra thng mch gia u ni 5P ca b cm bin vi mass.

Ni: Y/R Y/RTiu chun: thng mch

Ni: Y/R mass.Tiu chun; khng thng mch

Kt qu kim tra trn c ng khng?

YES; thay mi ECM v kim tra li

NO: h mch hay ngn mch dy Y/RII. N MIL NHY 7 LN (CM BIN ECT)

Trc khi bt u kim tra, nn kim tra u ni 2P ca cm bin ECT v u ni 33P ca ECM tip xc tt hay khng v kim tra li n MIL.

1. Kim tra hiu in th u vo ca cm bin ECT

Bt cng tt my OFF. Tho gic ni 2P ca cm bin ECT.

Bt cng tt my ON. o in p gia gic ni b dy cm bin ECT vi mass. Ni; P/W(+) G/O(-)Tiu chun: 4,75 5,25VHiu in th c t 4,75 5,25V khng?

YES: Kim tra cm bin ECT nu cm bin bnh thng th thay mi ECM v kim tra li

NO: n bc 22. Kim tra mch in cm bin ECT

Bt cng tt my OFF. Tho gic ni 33P ca ECM.

Kim tra thng mch gia gic ni 33P ca ECM vi gic ni b dy ca cm bin ECT

Kim tra thng mch gia gic ni 2P ca cm bin ECT vi mass.

Ni: P/W P/W G/O G/OTiu chun: thng mch

Ni P/W - massTiu chun: khng thng mch

Kt qu kim tra trn c bnh thng khng?

YES: thay mi ECM v kim tra li

NO: H mch P/W hay G/O Ngn mch P/WIII. N MIL NHY 8 LN (CM BIN TP)

Trc khi bt u kim tra nn kim tra gic ni b cm bin 5P (black) v gic ni ECM 33P (black) xem tip xc c tt khng v kim tra li n MIL.

1. Kim tra hiu in th u vo ca b cm bin

Bt cng tt OFF. Ngt u ni 5P ca b cm bin.

Bt cng tt ON. o in p b dy cm binNi: Y/O(+) G/O(-)

Tiu chun: 4,75 - 5,25V

Hiu in th c t 4,75 5,25V khng?

YES: thc hin bc 3

NO: thc hin bc 22. Kim tra mch in b cm bin

Bt cng tt my OFF. Tho u ni 33P ca ECM.

Kim tra thng mch gia u ni 5P ca b cm bin vi gic ni b dy ca ECM.

Ni: Y/O Y/O G/O G/OTiu chun: thng mch

S kim tra trn c bnh thng khng?

YES: thay ECM mi v kim tra li

NO: H mch dy Y/O hay G/O3. Kim tra cm bin TP

Bt cng tt my OFF

Kim tra thng mch gia cc cc ca cm bin.

Ni: C D

Tiu chun: thng mch

Kim tra in tr gia cc cc thay i tng ng vi s vn hnh ca bm gaNi: B C

Kim tra bnh thng hay khng?

YES: thc hin bc 4

NO: thay mi b cm bin v kim tra li4. Kim tra mch tn hiu ca cm bin TP

Tho u ni 33P ca ECM.

Kim tra thng mch gia gic ni b dy ca b cm bin v gic ni b dy ca ECM.

Kim tra thng mch u ni 5P ca b cm bin vi mass.

Ni: W/R W/RTiu chun: thng mch

Ni: W/R massTiu chun: khng thng mch

YES: thay ECM mi v kim tra li

NO: H mch hay ngn mch dy W/RIV. N MIL NHY 9 LN (CM BIN IAT)Trc khi bt u kim tra nn kim tra gic ni b cm bin 5P (black) v gic ni ECM 33P (black) xem tip xc c tt khng v kim tra li n MIL.

1. Kim tra hiu in th u vo ca cm bin IAT

Bt cng tt my OFF. Tho u ni 5P ca b cm bin.

Bt cng tt my ON. o hiu in th.

Ni: W/B(+) G/O(-)

Tiu chun: 4,75 5,25V

Hiu in th c t 4,75 5,25V khng?

YES: thc hin bc 3

NO: thc hin bc 22. Kim tra mch cm bin IAT

Bt cng tt my OFF. Tho u ni 33P ca ECM.

Kim tra thng mch gia gic ni b dy ca ECM vi gic ni 5P ca cm bin ECT

Kim tra thng mch u ni 5P ca b cm bin vi mass.

Ni: W/B W/B G/O G/OTiu chun: thng mch

Ni: W/B mass.Tiu chun: khng thng mch

Bnh thng hay khng?

YES: thay ECM mi v kim tra li

NO: h mch White/Blue

H mch Green/Orange

Ngn mch White/Blue

3. Kim tra in tr cm bin IAT

Bt cng tt my OFF.

o in tr gia cc cc ca u ni 5P ca b cm bin

Ni: C E

Tiu chun: 1 4k (20oC/68oF)

in tr cm bin c t 1 4k (20oC/68oF) khng?

YES: thay ECM mi v kim tra li

NO: thay b cm bin mi v kim tra liV. N MIL NHY 12 LN (KIM PHUN)

Trc khi bt u kim tra nn kim tra gic ni 2P (black) ca kim phun v gic ni ECM 33P (black) xem tip xc c tt khng v kim tra li n MIL.

1. Kim tra hiu in th u vo ca kim phun

Bt cng tc my OFF. Tho gic ni 2P ca kim phun.

Bt cng tc my ON. o hiu in th gia gic ni 2P ca kim phun vi mass.

Ni: Black Ground

Tiu chun: khong (hiu in th accu 1,1)V

C hiu in th tiu chun hay khng?

YES: thc hin bc 2

NO: H mch hay ngn mch dy Black2. Kim tra in tr ca kim phun

Bt cng tt my OFF. o in tr gia cc cc ca gic ni 2P ca kim phun.

Tiu chun: 9 - 12 (20oC/68oF)

in tr c t 9 - 12 (20oC/68oF) khng?

YES: thc hin bc 3

NO: hng kim phun3. Kim tra mch tn hiu kim phun

Tho gic 33P ca kim phun.

Kim tra thng mch gia gic ni 2P ca kim phun vi gic ni 33P ca ECM.

Kim tra thng mch gia gic ni 2P ca kim phun vi mass.

Ni: Pink/Blue Pink/Blue

Tiu chun: thng mch

Ni: Pink/Blue Ground

Tiu chun: khng thng mch

Kim tra thy bnh thng hay khng?

YES: thay ECM mi v kim tra li.

NO: H mch dy Pink/Blue

Ngn mch dy Pink/Blue

VI. N MIL NHY 21 LN (CM BIN O2)Trc khi bt u kim tra nn kim tra gic ni 1P (black) ca cm bin O2 v gic ni ECM 33P (black) xem tip xc c tt khng v kim tra li n MIL.

1. Kim tra ngn mch mch in cm bin O2Bt cng tt my OFF. Tho gic ni 33P ca ECM v np cm bin O2.

Kim tra thng mch gia in cc ca cm bin O2 vi mass.

Ni: in cc cm bin O2 vi mass.

C thng mch hay khng?

YES: ngn mch dy Black/Orange

Ngn mch dy Black/Orange ca cm bin O2NO: thc hin bc 2

2. Kim tra thng mch mch in cm bin O2.Kim tra thng mch gia in cc ca cm bin O2 vi u ni 33P ca ECM.

Ni: in cc cm bin O2 Black/Orange

C thng mch khng?

YES: thc hin bc 3

NO: ngn mch dy Black/Orange

H mch dy Black/Orange ca cm bin O23. Kim tra cm bin O2Thay cm bin O2 mi.

Xa d liu trong b nh t chn on khi ECM.

Khi ng ng c v cho lm vic n nhit lm vic.

Chy th v kim tra li n MIL c nhy 21 ln khng?

YES: thay ECM mi v kim tra li.

NO: hng cm bin O2.

VII. N MIL NHY 29 LN (VAN IACV).

Trc khi bt u kim tra nn kim tra gic ni 4P (black) ca van IACV v gic ni ECM 33P (black) xem tip xc c tt khng v kim tra li n MIL.

1. Kim tra ngn mch van IACV

Bt cng tt my OFF. Tho gic ni 4P ca van IACV. Kim tra gic ni c b lng hay in cc c b mn khng.

Kim tra thng mch gia u ni 4P ca van IACV vi mass.Ni:

Light Green/Red Ground

Brown/Red Ground

Gray/Red Ground

Black/red Ground

Tiu chun: khng thng mch

C thng mch hay khng?

YES: ngn mch dy Light/Red hay Brown/Red

Ngn mch Gray/Red hay Black/Red

NO: thc hin bc 2.

2. Kim tra thng mch mch in van IACV

Tho gic ni 33P cuae ECM.

Kim tra thng mch gia cc in cc ca gic ni 4P ca IACV vi cc in cc ca gic ni 33P ca ECM.

Ni:

Light/Red Light/Red

Brown/Red Brown/Red

Gray/Red Gray/Red

Black/Red Black/Red

Tiu chun: thng mchC thng mch hay khng?

YES: thc hin bc 3

NO: h mch Light/Red hay Brown/Red

H mch dy Gray/Red hay Black/Red

3. Kim tra in tr van IACV

o in tr gia cc cc ca u ni 4P cu IACV

Ni: A D B C

Tiu chn: 110 -150 (20oC/68oF)in tr c t 110 -150 (20oC/68oF) khng?

YES: thc hin bc 4

NO: hng IACV. Thay IACV mi v kim tra li.4. Kim tra ngn mch van IACV

Kim tra thng mch gia cc in cc ca van IACV.

Ni: A B

C D

Tiu chun: khng thng mch

Kim tra thng mch hay khng?

YES: hng IACV. Thay IACV mi v kim tra li.

NO: thay ECM mi v kim tra li.

KIM TRA MCH N MIL

Bt cng tt my OFF.

Tho

Tho gic ni 33P ca ECM.

Bt cng tt my ON n MIL s tt.

Nu n MIL sng kim tra ngn mch dy Blue/Yellow gia ng h o tc vi ECM.

Nu n MIL tt th kim tra nh sau:

Kim tra thng mch gia gic ni 33P ca ECM vi mass.

Ni: No15(Brown) Ground

Tiu chun: khng thng mch

Nu thng mch th kim tra ngn mch dy Brown gia DLC vi ECM

Nu khng thng mch thay ECM mi v kim tra li

E. KIM TRA NG NG NHIN LIU

Trc khi tho ng nhin liu th phi gim bt p sut trong h thng bng cch.

Lu khng c b cong hay xon ng nhin liu1. Bt cng tt my OFF

2. Tho gic ni 5P ca bm xng3. Bt cng tt my ON

4. Khi ng ng c v chy tc cm chng cho n khi cht my.

5. Tho cp (-) khi bnh accu

6. Kim tra u ni tt c bn khng, v lm sch nu cn.

Dng khn lau ph ln u ni

7. Tho ng nhin liu khi kp

C TRNG K THUT

A. H THNG PGM-FI.

I. NHNG THNH PHN CA H THNG.

Model ny s dng h thng PGM-FI (Programmed Fuel Injection) thay cho h thng s dng b ch ha kh truyn thng. H thng ny bao gm: kim phun, bm ga, ECM, bm xng, b cm bin (cm bin MAP, IAT, TP), cm bin CKP, cm bin ECT, cm bin O2 v IACV.

PGM-FIProgrammed Fuel InjectionIAT sensorIntake Air Temperature sensor

MAP sensorManifold Absolute Pressure sensorCKP sensorCrankshaft Position sensor

TP sensorThrottle Position sensorIACV Idle Air Control Valve

ECT sensor Engine Coolant Temperature sensorECM Engine Control Module

II. SO SNH GIA B CH HA KH V H THNG PGM-FI

1. S VN HNH C BN T TC CM CHNG N TC CAO.

a. S VN HNH C BN.

B ch ha kh v h thng PGM-FI iu khin cng sut ca ng c bng cch iu chnh th tch hn hp xng/khng kh c a vo trong ng c bng cch ng/m bm ga. C hai loi c thit k cung cp t l khng kh nhin liu ph thuc vo th tch khng kh i vo.

b. S VN HNH C BN CA B CH HA KH.

tc cm chng v tc thp, bm ga m ra mt khong nh, nhin liu c ko xung t gic l cm chng v gic l tc thp di dng sng v c ha trn vi dng kh i vo. Hn hp c a n ng c.

Trong khong t tc thp n trung bnh, chn khng tng ln tng ng vi v tr bm ga. Chn khng trong ng khuch tn ln hn khi piston i ln, ko lng nhin liu ln hn t gic l chnh v kt hp vi kh np. Hn hp nhin liu di dng sng t gic l chnh/gic l tc thp v khng kh c truyn vo trong ng c.

tc cao, p sut chn khng trong xylanh v bm ga m hon ton, kch thc ng khuch tn l ln nht. Bi vy lng nhin liu ln nht c ko xung t gic l chnh di dng sng kt hp vi khng kh np. Hn hp c a vo trong ng c.

c. S VN HNH C BN CA H THNG PGM-FI.

T tc cm chng n tc cao, mt lng nhin liu c ci t trc c phun ra t kim phun tng ng vi lng khng kh np, kim phun c iu khin bi ECM v ECM nhn tn hiu in p t cc cm bin.

Kim phun phun mt lng nhin liu chnh xc vo trong ng gp np, ph thuc vo th tch khng kh np, bng cch thm vo khong thi gian phun chnh xc (*2) n khong thi gian phun c bn(*1).

*1: Khong thi gian phun nhin liu c bn c tnh bi 2 loi bn c lu trong b nh ECM m c tm bi s vng quay ng c v lng kh np (c tnh theo cng thc c ci t trc m dng hiu in th ng ra ca cm bin MAP, IAT, TP tnh.).

*2: khong thi gian phun nhin liu chnh xc c tnh ton bi ECM theo hiu in th ng ra ca mi cm bin v iu kin vn hnh ca ng c.

2. S LM GIU NHIN CHO VIC KHI NG LNH.

ng c vn hnh trong iu kin khi ng lnh.

Nhin liu khng ha hi tt trong ng c lnh lm cho t l khng kh- nhin liu ngho lm cho cm chng khng m.

a. Khi ng lnh vi b ch ha kh (vi van nhit SE).

Khi ng c lnh, t l khng kh/nhin liu chnh xc v tc cm chng nhanh c duy tr bi van nhit SE, n a thm lng khng kh/nhin liu vo qua cng khi ng, b sung cho lng nhin liu phun ra t gic l cm chng.

b. Khi ng lnh vi PGM-FI.

Khi ng c lnh ECM iu chnh lng nhin liu bng cch ko di thi gian m kim phun tng ng vi tn hiu ddienj p t cm bin ECT, ph thuc vo iu kin ng c, trong khi iu khin van IACV a thm lng khng kh vo duy tr tc cm chng nhanh.

3. S LM GIU NHIN LIU CHO VIC TNG TC NHANH.

ng c vn hnh di iu kin tng tc nhanh.

Khi bm ga dc m t ngt, lng ln kh np i vo trong ng c. p sut chn khng ng ng np nh hn lm thiu nhin liu v lm cho t l khng kh nhin liu ngho, kt qu l cng sut ng c yu.

a. Tng tc nhanh vi b ch ha kh.

Khi bm ga m t ngt, chn khng trong xylanh p ng chm, lm cho chn khng trong ng khuch tn ln, kt qu l c nhiu nhin liu c ht ra khi gic l chnh. S cung cp thm nhin liu ny to ra t l khng kh nhin liu l tng.b. Tng tc nhanh vi PGM-FI.

Khi bm ga b m t ngt, ECM iu chnh lng nhin liu theo in p ng ra ca cm bin TP, ph thuc vo iu kin hot ng ca ng c, kim phun c m lu hn phun nhiu nhin liu hn vo trong xylanh, to ra t l l tng.

4. CT NHIN LIU KHI PHANH BNG NG C.

ng c vn hnh di iu kin phanh bng ng c.

Khi bm ga ng v phanh bng ng c c s dng, ng c thiu khng kh np. Kt qu l s mt la xy ra, hn hp khng chy c thi ra ngoi khng kh.

a. Gim tc vi b ch ha kh.

Khi bm ga ng hon ton v phanh bng ng c c s dng, p sut chn khng trong ng ng np tng ln. V khi lng khng kh nh hn nhin liu nn nhiu khng kh c ht vo trong ng np v t l nhin liu khng kh khng ng, kt qu l b la.

Van ct khng kh bng cch ng mch khng kh cm chng/tc thp ngn mt la, kt qu l hn hp khng chy ht thi ra ngoi khng kh.

b. Gim tc vi PGM-FI.

Khi bm ga ng v phanh ng c c s dng, ECM pht hin bm ga dng hon ton theo tn hiu cm bin TP v cm bin CKP. ECM ct ngun nhin liu n xylanh bng cch t thi gian phun nhin liu v khng, ngn nhin liu cha chy ht thi ra ngoi khng kh trnh tiu hao nhin liu.III. MCH IN H THNG IU KHIN PGM FI.

ECM iu khin iu kin vn hnh ca ng c bng cch vn hnh nhng b phn nh kim phun v bm xng ph thuc vo tn hiu t cm bin.

1. IU KHIN KHONG THI GIAN PHUN NHIN LIU/ 2 BN CHNG TRNH CA H THNG.

Khong thi gian phun nhin liu c bn c tnh theo tc ng c v lng khng kh np, m n c o bi in p ng ra ca cm bin TP, MAP, CKP.

N s dng hai loi bn chng trnh ca h thng iu chnh khong thi gian phun nhin liu:loi speed-density mapc s dng cho m bm ga nh/p sut chan khng trong ng ng np ln, loi speed-throttle map c s dng cho m bm ga ln/p sut chn khng ng ng np nh.

bn : chng trnh tnh ton khong thi gian phun nhin liu ph thuc vo 2 yu t (tc ng c v p sut chn khng trong ng ng np hay m bm ga), minh ha trn ba chiu hnh bn di.

Bn chng trnh ca h thng c iu chnh cho ng c, h thng np v thi m c kt hp vi xe my. Vic thay th bt k b phn no ca ng c, h thng np v thi bng bt k b phn no khng c thit k cho loi xe my ny s gy li.

a. M BM GA NH/P SUT CHN KHNG TRONG NG NG NP CAO.

Thi gian phun c bn dc tnh bi bn speed density m p sut chn khng trong ng ng np c pht hin b cm bin MAP v tc s ng c c pht hin bi cm bin CKP.

b. M BM GA LN/ P SUT CHN KHNG NG NG NP NH.

Khong thi gian phun c bn c tnh bi bn speed throttle m v tr cnh bm ga c pht hin bi cm bin TP v tc ng c c pht hin bi cm bin CKP.

IV. VAI TR CA MI CM BIN.

Mi cm bin cung cp thng tin cho ECM bng cch chuyn nhng thng tin vt l nh nhit v p sut thnahf tn hiu in.

1. CM BIN.

C hai loi ng ra ca cm bin: mt loi chuyn s thay i in p thnh s thay i in p, mt loi khc cung cp in p hay cng dng in ca chnh n.

a. HIU IN TH NG RA CA CM BIN.

Minh ha s bn di, hai in tr chia in p ngun thnh khi ni vi ngun trong dy.

Khi in tr A v B c cng gi tr in tr, in p ngun s c chia thnh phn bng nhau. Khi mt trong s chng c gi tr in tr ln hn ci kia th chng c in p ri ln hn.

Cm bin ECT v cm bin IAT s dng nguyn l ny.

ECM nhn c thng tin thay i vt l (thay i ca nhit , p sut) bng s thay i in p bng cch c n 2 u ca in tr B (in tr A: in tr c nh, in tr B: bin tr m n phn ng vi s thay i vt l).

V d: in p ngun l 5V, gi tr in tr A l 1.5k, gi tr in tr B l 2.5k, in p o c im C l 3.125V nh hnh bn di. Nu in tr B l 0.1k th gi tr in p o c C l 0.3125V.

2. CM BIN CKP.

Cm bin CKP xc nh tc ng c v gc ca trc khuu.

Cm bin CKP bao gm nhng t tr trn bnh (9 mu) v b cm bin c cu to t nam chm vnh cu v cun dy.

Khi t tr ct ngang cm bin CKP khi truch khuu quay, lm thay i ng t thng trong cun dy. Cm bin CKP nhn bit s thay i ny bng cch chuyn i chng thnh s thay i in p v gi xung in p n ECM (9 xung trn mt vng quay).

Ph thuc in p ng ra, ECM iu khin nh sau:

Xc nh thi im phun nhin liu.

Xc nh khong thi gian phun c bn ( vi cm bin TP v cm bin MAP).

Ct ng cung cp nhin liu khi gim tc (cm bin TP).

Xc nh thi im nh la.

3. CM BIN TP

Cm bin TP xc nh m bm ga

Cm bin TP bao gm mt bin tr t trn cng mt trc vi cnh bm ga v tip im dch chuyn trn bin tr tng ng vi cnh bm ga.

Cm bin TP xc nh s thay i ca tip im ng b vi s dch chuyn ca cnh bm ga bng cch chuyn chng thnh s thay i in tr. in p ng vo t ECM n c iu chnh bi s thay i in tr ny v quay tr li ECM.

in p ng ra gi v ECM thp khi m bm ga nh. in p cao hn khi bm ga m ln hn

Ph thuc vo in p ng ra, ECM iu khin nh sau:

Xc nh khong thi gian phun c bn v ct ngun cung cp nhin liu khi gim tc.( vi cm bin CKP)

Tng thm nhin liu phun ra khi tng tc.

4. CM BIN MAP. Cm bin MAP xc nh s thay i p sut chn khng trong ng ng np.

Cm bin MAP bao gm: thit b cm nhn p sut (mng silicon) n thay i in tr khi c p sut tc dng ln n, v b khuch i khuch i s thay i in p rt nh.

Ng ra ca cm bin MAP l s thay i ca p sut chn khng c bin i thnh s thay i ca in tr v khuch i chng ln. Ng vo ca ECM l gi tr c chuyn thnh s thay i in p.

in p ng ra trong ECM thp khi p sut chn khng chn khng trong ng ng np thp. in p cao hn khi p sut chn khng cao hn.

Ph thuc vo in p ng ra, ECM tnh ton khong thi gian phun c bn vi cm bin CKP.5. CM BIN ECT

Cm bin ECT xc nh nhit nc lm mt ng c.

Cm bin ECT bao gm nhit in tr m in tr thay i theo s thay i nhit .

Cm bin ECT xc nh nhit nc lm mt ca ng c bng cch chuyn chng thnh s thay i gi tr in tr ca nhit in tr. ECM nhn tn hiu ng ra ca cm bin nh s thay i in p.

in p ng ra trong ECM cao khi nhit nc lm mt ng c thp. in p thp hn khi nhit c tng.

Ph thuc vo in p ng ra, ECM chnh xc khong thi gian phun nhin liu ng vi nhit nc lm mt ng c.

6. CM BIN IAT

Cm bin IAT xc nh nhit kh np vo ng c.

Cm bin IAT bao gm mt nhit in tr m n thay i gi tr in tr theo s thay i nhit .

Cm bin IAT xc nh s thay i nhit kh np bng cch bin i chng thnh s thay i ca gi tr in tr. Ng vo ca ECM bin i gi tr in tr thnh in p.

in p ng ra trong ECM cao khi nhit kh np thp. in p thp hn khi nhit kh np cao hn.

Ph thuc vo in p ng ra. ECM xc nh khong thi gian phun nhin liu theo nhit kh np.

7. CM BIN O2 Cm bin O2 xc nh lng oxi c trong kh thi.

Cm bin O2 gao gm ng hnh tr, c m mt lp zirconia. Bn trong tip xc kh tri, bn ngoi tip xc vi kh thi.

Thit b zirconia to ra mt sc in ng bi s khc nhau gia nng oxi gia khng kh v kh thi mt nhit xc nh.

Cm bin oxi xc nh nng oxi c trong kh thi bng cch o sc in ng. ECM nhn gi tr in p.

in p ng ra ca cm bin Oxi khong 0V khi s chch lch nng oxi gia khng kh v kh thi rt nh (khi t l khng kh/nhin liu ngho), khong 1V khi chnh lch ln (tie l khng kh/ nhin liu l giu).

Ph thuc vo in p ng ra, ECM xc nh khong thi gian phun nhin liu tng ng vi nng oxi c trong kh thi.

8. KIM PHUN

a. Tm tt

Kim phun l mt van in t m bao gm van kim, cun dy in t, l xo v lc.

Nhin liu c nn mt p sut khng i (294 kPa (3 kgf/cm2, 43 psi) c cung cp n kim phun.n phun mt lng nhin liu chnh xc t cm chng n tc ng c ln nht.

Kim phun ng hon ton hay m hon ton vi hnh trnh c nh. Lng nhin liu c phun ra ph thc vo kim phun c gi m trong bao lu.

Cng tt my cp ngun cho kim phun. Khi ECM kch transistor iu khin th c dng i qua cun dy v kim phun m.

b. S vn hnh

Nhin liu c nn bi bm xng b chn li vi phun bi con i/van kim v van.

Khi ECM bt transistor iu khin ON, dng in i qua cun dy trong kim phun. Lc in t ca cun dy ko con /van kim ln lm nn l xo li.

Vi phun m khi con i/van kim nng ln. Nhin liu b chn vi phun i qua lc v phun vo trong ng ng gp np.

Khi ECm bt transistor iu khin OFF, dng qua cun dy b ngt. L xo ng vi phun v kt qu l vic phun chm dt.

V. H THNG BM NHIN LIU

1. Tm tt

Bm xng c t bn trong thng xng.

Bm xng ht nhin liu qua lc v truyn n kim phun.

B iu p gi cho p sut nhin liu khng i 294 kPa (3 kgf/cm2, 43 psi).

S vn hnh ca bm xng.

Khi motor quay, nhng rnh hnh cnh qut trn chu vi cnh bm to ra p sut khc nhau bi lc ma st nht, nhin liu c ht vo trong bm sau c truyn ra khi bm.

Nhin liu c ht qua lc lu thng trong motor v i qua van kim tra p sut d sau truyn qua cng np.

Khi ng c bt OFF v bm xng khng hot ng van kim tra duy tr p sut d ng c khi ng li d dng.

B iu p gi p sut nhin liu khng i nh van iu p, n m ra khi p sut nhin liu bn trong mch phun (gia bm v kim phun) cao hn p sut nht nh.

2. RELAY NGNG NG C

c ni vi cng tt my, relay ngng ng c bt ON/OFF ECM, relay bm xng v bm xng.

Khi bt cng tt my ON, dng in i qua cun dy bn trong relay ngng ng c, lc in t ca cun dy bt cng tt relay ngng ng c ON (ch khi cm bin gc ON).

ECM v relay bm xng c cp ngun t acquy qua relay ngng ng c khi cng tt relay ngng ng c l ON.

3. RELAY BM XNG

Relay bm xng dung bt ON/OFF bm xng.

Khi relay ngng ng c bt ON, ngun t acquy c cp n cun dy bn trong relay bm xng. Cun dy to ra lc n t khi ECM ni mass cho ngun v bt ON cng tt relay bm xng.

Bm xng c cp ngun t acquy qua relay ngng ng c v relay bm xng khi cng tt relay bm xng bt ON.

4. CM BIN GC

Khi mt xe c trang b b ch ha kh b , ng c t ng ngng bi v s thay i ca mc nhin liu trong bung phao v nhin liu khng c cung cp, nhng ng c trang b h thng PGM-FI s khng dng khi nhin liu c nn vn c phun.

ngng ng c trang b h thng PGM-FI khi xe b , xe c trang b cm bin gc xc nh gc ca xe. Khi xe b nghing hn 494o, n ct ngun cp n bm xng v h thng PGM-FI bng cch ct dng n relay ngng ng c.

ng tm ca con lc bn trong cm bin gc s c gi thng hang vi ng tm ca xe khi quay vng v lc ly tm tc dng ln con lc, trong khi n s b lch khi xe b v lc ly tm khng lm vic.

Khi ng tm ca con lc v ng tm ca xe b lch ln hn mt gc xc nh, cm bin gc ngng ng c bng cch ct ngun cp n relay ngng ng c.

S vn hnh ca cm bin gc.

Khi cng tt my bt ON, ngun cp qua mch latch up bt transistor iu khin relay ngng ng c ON.

Khi transistor iu khin ON, dng in t relay ngng ng c i qua transistor cm bin gc v mass. Relay ngng ng c ON.

Khi xe b nging hn 494o, nam chm trong con lc cm bin ng cng tt li g.

Khi cng tt li g ON, transistor iu khin b chuyn sang OFF, h mch gia relay ngng ng c v mass. iu ny ct ngun n bm xng v h thng PGM FI.

Khi xe b nging hn 494o, mch latch up gi cho transistor iu khin OFF thm ch khi xe c dng ln.

bt transistor iu khin ON, ci t li mch latch up bng cch bt cng tt my OFF.

VI. MCH IN IU KHIN BM XNG.

1. Khi cng tt my bt ON.

Khi cng tt my bt ON, ngun t acquy c cp n cm bin gc qua cu ch chnh (20A),cng tt my v cu ch ph (10A). Khi cm bin gc ON, dng i qua cun dy ca relay ngng ng c v relay bt ON.

Ngun t acquy cp n ECM khi relay ngng ng c bt ON. ECM iu khin relay bm xng vn hnh bm xng. Dng in i qua cun dy bm xng trong khong 2 giy v relay bt ON trong khong 2 giy v kt qu l bm xng vn hnh trong khong 2 giy.

2. TRONG QU TRNH KHI NG

Khi trc khuu quay, ECM nhn tn hiu ng vo t cm bin CKP. ECM bt ON relay bm xng vn hnh bm xng

3. KHI CNG TT MY C BT OFF.

Khi cng tt my bt OFF, s vn hnh ca bm xng ngng v ngun cp n ECM v relay bm xng b ct.

4. KHI XE B (CM BIN GC B BT OFF).

Khi xe b v cm bin gc xc nh n, relay ngng ng c OFF.

Khi relay ngng ng c OFF, s vn hnh bm xng dng v ngun cp n ECM v relay bm xng b ct.

5. KHI ECM DNG HOT NG CA BM XNG V LI CA CM BIN CKP C PHT HIN(VN HNH CHC NNG D PHNG)

Relay bm xng bt OFF v ECM ct ngun cp n cun dy relay bm xng.

S vn hnh bm xng dng.

VII. VAN IU KHIN CM CHNG (IACV).

1. Tm tt.

IACV bap gm ECM, motor bc, van trt v mch tt.

IACV iu chnh lng khng kh i qua bm ga bng cch vn hnh van trt tng ng vi tn hiu ng vo t ECM gi cho tc cm chng ng c gi tr xc nh 1700100 rpm

2. KHI CNG TT MY BT ON.

Khi cng tt my bt ON, ECM bt motor bc v n y van trt ti trc. Trong khi xc nh nhit nc lm mt ng c, ECM dn ng motor y van pha sau n v tr chnh xc ni m lng kh np cn thit khi ng ng c.

3. TRONG QU TRNH LM M NG C.

Khi ng c vn cn lnh, ECM iu khin v tr van trt tng lng kh np. Kt qu tc cm chng ng c c gi 1900100 rpm.

Khi ng c m, van trt hi li ti trc n v tr bnh thng. ECM gim lng kh np bng cch iu khin v tr van trt t c tc cm chng xc nh 1700100 rpm.

VIII. CHC NNG T CHN ON.

Khi cng tt my bt ON, n bo hng h thng PGM FI s sng trong vi giy,sau tt.

Khi ECM xc nh s bt thng t h thng in, n MIL nhp nhy theo chc nng t chn on ca h thng nhc nh ngi s dng v vn .

n MIL nhp nhy ch khi cng tt my bt ON vi ng c ngng hay tc ng c di 2200 vng/pht.

Li c xc nh bi chc nng t chn on nh li ngn mch hay h mch.

ECM cha m li khi vn c xc nh. Mi ln ghi, m li c lu trong b nh xa c cho n khi thc hin quy trnh xa m li.

H thng PGM FI c cung cp chc nng chy an ton duy tr kh nng vn hnh ti thiu bng cch s dng chng trnh trong ECM thm ch khi c vn vi h thng.

Khi c bt k s bt thng no trong kim phun hay cm bin v tr trc khuu, chc nng an ton ngng ng c bo v n khi nhng h hng nghim trng,

Thi gian nhp nhy miu t m li (0 29). n MIL s dng 2 loi khong thi gian nhp nhy, nhp nhy di khong 1.3 giy v nhp nhy ngn 0.3 giy.

IX. H THNG THNG HI CACTE (PCV: POSITIVE CRANKSHAFT VENTILATION)

Xe my s dng h thng PCV thng hi cacte bng cch phun khng kh. Vic thng hi cacte ngn s ng kh thot c cha xng v hi nc khi nhim bn du ng c di iu vn hnh m kt qu l nhit du ng c thp.

H thng PCV bao gm lc gi, van in t PCV v van kim tra van PCV vi van li g PCV.

Van li g PCV ngn dng kh thi h v hp lc gi.

Van in t gi tc cm chng ng c bng cch iu khin dng khng kh trong cacste ph thuc vo m bm ga v tc ng c.

ECM bo cho van in t ngt dng khng kh gi tc cm chng n nh.

Khi m bm ga v tc ng c tng ln, ECM iu khin van in t m v thng hi cacste. Van in t ng khi tc ng c t n gi tr xc nh.

X. H THNG IU KHIN KH THI (SHi)

Ngun kh thi

Qu trnh chy to ra CO, NOx v HC. iu khin HC v NOx rt quan trng, bi v di iu kin xc nh, chng phn ng to thnh khi quang ha khi b phi ra di nh nng mt tri. CO khng phn ng theo cch ny nhng n l toxic.

Cng ty Honda Motor s dng nhiu h thng khc nhau gim HC, CO v NOx .

1. H thng iu khin kh thi cacte.

H thng c trang b h thng cacte kn ngn kh thi trong cacte thi ra ngoi mi trng. Kh thot c hi v bung chy qua khoang lc gi v than bm ga. Hi nc c ngng t trong cacte c tch tr trong ng tiu nc thng hi cacte, n phi c thi ra theo chu k.

H thng iu khin kh thi c lm t h thng cung cp khng kh th cp v h thng PGM FI v khng iu chnh. H thng iu khin kh hi l tch ri h thng iu khin kh thi cacte.

2. H thng cung cp khng kh th cp.

H thng cung cp khng kh th cp m n a khng c lc vo trong kh thi ca thi. Khng kh c ko vo trong ca thi bi chc nng van in t phun khng kh th cp dng xung (PAIR: Pulse Secondary Air Injection solenoid valve).

S np khng kh ny y mnh s t chy ca kh thi cha chy ht v thay i mt lng kh HC v CO ng k thnh CO2 v hi nc.

Van kim tra PAIR ngn dng khng kh i ngc li vo h thng. Van in t PAIR c iu khin bi ECM v ng ng khng kh b ng hay m theo iu kin vn hnh.

H thng cung cp khng kh th cp khng iu chnh c, kim tra nh k nhng b phn c nhc nh.

B xc tc 3 tc dng.

Xe my ny c trang b b xc tc 3 tc dng. B xc tc 3 tc dng nm trong h thng kh thi. Qua phn ng ha hc, n chuyn HC, CO v NOx trong kh thi thnh CO2, N2 v hi nc.

A. H THNG NH LA

I. V TR H THNG

II. S H THNGIII. THNG TIN CHUNG

ECM c th b hng nu b ri. Cng nh, nu tho gic ni khi c dng in ang chy trong mch th hiu in th tha c th lm hng ECM. Lun bt cng tt my OFF khi thc hin bo dng.

S dng bugi di nhit ng.s dng bugi di nhit sai c th lm h hng ng c.

Mt vi b phn in t c th b h hng nu in cc hay gic ni c ni vo hay tho ra khi cng tt my bt ON v dng in ang chy trong mch.

Khi tin hnh bo dng h thng nh la lun thc hin theo trnh t tm kim h hng.

Thi im nh la khng cn iu chnh v ECM c ci t trc nh my.

H hng ca h thng nh la thng lin quan n u ni tip xc km. Kim tra gic ni trc khi tin hnh qu trnh bo dng.

Chc chn rng acquy c np no. S dng my vi acquy yu lm choc ho tc quay ca ng c thp hn cng nh khng c tia la bugi.

Kim tra theo trnh t

Bugi

Cng tt my

Tham kho phn kim tra cm bin CKP

IV. THNG S K THUT.

McThng s k thut

BugiCPR7EA 9 (NGK), U22EPR9 (ND)

Khe h Bugi0.8 0.9 mm (0.03 0.04 in)

in p cc i ca b bin100 V

in p cc i ca cm bin CKP0.7 V

Thi im nh la10o trc im cht trn tc cm chng

V. TRNH T TM KIM H HNG

Kim tra theo trnh t trc khi chn on.

Bugi b hng khng

Np bugi v mi ni bugi lng hay khng.

C nc trong np bugi hay khng (r r hiu in th cun dy th cp) in p ban u ca cun dy th cp l hiu in th ca acquy khi cng tt my bt ON. (ng c khng dc quay bi my ).

Khng c tia la bugi

iu kin khng bnh thngNguyn nhn c th (Kim tra theo trnh t)

Hiu in th cun dy s cpKhng c hiu in th ban u khi bt cng tt my ON.(cc thit b in khc bnh thng).1. Mi ni dy mu en km hay h mch.

2. Mi ni in cc ca cun dy s cp lng hay tip xc km hay h mch trong cun dy th cp.

3. ECM hng (trong trng hp khi tho gic ni 33P ca ECM th c hiu in th ban u)

Hiu in th ban u bnh thng nhng khi ng c hot ng th in p gim t 2 4 V.1. Cc mi ni b iu chnh in p nh khng ng. (h thng l bnh thng nu in p o c ln hn thng s k thut khi ni ngc li)

2. Acquy np cha (in p ri ln khi khi ng ng c).

3. Mi ni tip xc km hay h mch dy xanh dng ca ECM.

4. Mi ni tip xc km hay h mch dy xanh dng/ gia b bin v ECM.

5. Ngn mch trong cun s cp b bin.

6. Cm bin CKP hng (o hiu in th nh).

7. ECM hng (trong trng hp t 1 6 bnh thng).

Hiu in th ban u bnh thng nhng khng c hiu in th nh khi ng c ang hot ng.1. Cc mi ni b iu chnh in p nh khng ng. (H thng l bnh thng nu in p o c ln hn thng s k thut khi ni ngc li).

2. Mi ni tip xc km hay h mch dy xanh dng /trng hay dy xanh dng ca cng tt bn.

3. Cng tt bn hng.

4. B iu chnh in p nh hng.

5. ECM hng (trong trng hp 1 4 bnh thng).

in p ban u bnh thng nhng in p nh thp hn gi tr chun.1. in tr o dc qu thp, di 10M/DCV.

2. Tc quay qu thp. (Acquy np cha ).

3. Thi im mu ca my kim tra v xung o c khng ng b. (h thng l bnh thng nu in p o c ln hn in p chun t nht 1 ln).

4. ECM hng (trong trng hp t 1 3 bnh thng).

in p ban u v in p nh l bnh thng nhng khng c tia la in.1. Bugi hng hay dng qua cun th cp ca b bin r.

2. B bin hng.

Cm bin CKPin p nh thp hn gi tr chun.1. in tr o c qu thp, di 10M/DVC.

2. Tc quay qu thp (acquy np cha ).

3. Thi im mu ca my kim tra v xung o dc khng ng b. (H thng l bnh thng nu in p o c ln hn din p chun t nht 1 ln).

4. Cm bin CKP hng (trong trng hp t 1 3 hng).

Khng c in p nh.1. B iu chnh in p nh hng.

2. Cm bin CKP hng

VI. KIM TRA H THNG NH LA.

Nu khng c tia la bugi th kim tra tt c cc mi ni lng hay tip xc khng tt trc khi o in p nh.

S dng ng h a chc nng loi s c trn th trng (in tr nh nht o c l 10M/DCV).

Gi tr hin th khc nhau ph thuc vo in tr trong ca ng h.

Nu s dng my chn on (i 625) th thc hin theo hng dn ca nh sn xut.Ni b iu chnh in p nh vi ng h a chc nng, hay s dng my chn on.

Dng c:

My chn on (i 625)

B chuyn i in p nh 07HGJ 0020100 vi ng h a chc nng loi s c trn th trng. (in tr ti thiu l 10M/DCV).

1. IN P NH CA CUN DY S CP B BIN

Kim tra tt c cc mi ni ca h thng trc khi kim tra. Nu h thng b ngt, in p nh o c khng ng.

Kim tra sc nn ca xylanh v bugi c lp ng cha.

Dng chn chng ng trn b mt phng.

Tho np bo dng.

Tho np chp bugi khi bugi.

Lp mt bugi tt vi np chp bugi v ni mass vi np my khi kim tra.

Khi cun dy s cp ca b bin c ni, ni my chn on hay u d ca b chuyn i in p nh n in cc v mass ca cun dy s cp ca b bin.

Ni: xanh dng/ (+) mass (-)

Bt cng tt my ON.

Kim tra hiu in th ban u ti thi im ny.

in p bnh cng nn c o.

Nu in p ban u khng o c th kim tra theo trnh t tm kim h hng.

p chn phanh.

Xp chn chng ng li.

Quay ng c vi my v o in p nh ca cun dy s cp.

in p nh: ti thiu 100 V

Nu in p nh thp hn gi tr chun th kim tra theo trnh t bng tm kim h hng.

2. IN P NH CM BIN CKP.

Kim tra tt c cc mi ni trc khi kim tra. Nu h thng b ngt th in p nh o c khng ng.

Kim tra p sut nn v kim tra bugi bt ng cha.

Bt cng tt my OFF.

Tho gic ni 33P ca ECM.

Ni my chn on hay que d b chuyn i in p nh n cc in cc ca gic ni 33P ca ECM.

Ni: gic 12 (xanh/vng) (+) gic 23 (trng/vng) (-)

Bt cng tt my ON v p chn phanh.

Khi ng ng c bng cng tt v o in p nh ca cm bin CKP.

in p nh: ti thiu 0.7 V.

Nu in p nh o c cc in cc gic ni 33P ca ECM l bt thng th o in p nh gic ni 3P ca cm bin CKP.

Tho np che pha trc.

Bt cng tt my OFF.

Tho gic ni 3P ca cm bin CKP v ni my chn on hay u d ca b chuyn i in p nh vi in cc ca gic ni cm bin CKP.

Ni: trng/vng (+) xanh/vng (-)

Bt cng tt my ON v p phanh.

Khi ng ng c bng my v o in p nh ca cm bin CKP.

in p nh: ti thiu 0.7 V

Thc hin cng mt cch nh gic ni 33P ca ECM, o in p nh v so snh vi in p o c gic ni 33P.

Nu in p nh o c b dy kim tra l bt thng v mt ln o c cm bin CKP l bnh thng th b dy h mch hay ngn mch hay mi ni lng.

Nu in p nh ca c 2 ci iu bt thng th kim tra mi ci theo bng tm kim h hng.

Thay cm bin CKP mi.

B bin: tho/lp

Tho theo trnh t:

Np che than.

Np bo dng.

Tho chp bugi.

Tho ai bt dy chnh khi v kt nc v cn dn dy.

Tho nhng gic ni cun dy s cp ca b bin.

Tho ai c v b bin.

Lp theo trnh t ngc li.

3. THI IM NH LA.

Thi im nh la khng th iu chnh k t khi n c ci t nh my.

Khi ng ng c v cho n lm vic n nhit lm vic v dng li.

Ni n cn la vi dy bugi.

Khi ng ng c v ch cm chng (1700 100 vng/pht).

Thi im nh la ng nu du ch s trn cacte thng hng vi du F trn bnh .

Nu thi im nh la khng ng th kim tra cm bin CKP.

4. CNG TT SIDESTAND: tho /lp.

Tho np che ng xng chnh bn tri.

Tho gic ni 3P ca cng tt sidestand.

Tho dy in ca cng tt khi cn hng dy.

Tho ai c v cng tt sidestand.

Lp cng tt sao cho rnh ca n v cht l xo khp.

Lp v xit cht ai c cng tt sidestand.

Lp dy cng tt sidestand vi kp ca khung.

Ni gic ni 3P ca cng tt.

Lp np che ng xng chnh bn tri.

Ch :

Khng s dng li cng tt gy.

Tho cng tt trc khi xit ai c trc xoay.

KIM TRA.

Tho np che.

Bt cng tt my OFF.

Tho gic ni 33P ca ECM.

Kim tra thng mch gia b dy ca gic ni 33P ca ECM vi mass.

Ni: xanh dng/trng mass.

N s thng mch khi chn chng bn xp li, v khng thng mch khi chn chng bn tc dng.Nu khng thng mch khi chn chng bn xp li th b dy b gy hay cng tt sidestand hng.

B. H THNG SC

I. V TR H THNG

II. S MCH IN

III. TRNH T TM KIM H HNG.

1. Kim tra acquy.

Tho acquy.

Kim tra iu kin acquy s dng thit b kim tra acquy tt hay khng.

Yes: thc hin bc 2.

No: acquy hng.

2. Kim tra dng r.

Lp acquy.

Kim tra dng r acquy.

Tho np che pha trc.

Bt cng tt my OFF, tho dy (-) acquy

Ni u (+) ca ampe k vi cp (-) v u (-) ampe k vi cc (-) acquy kim tra dng r.

Ch :

Khi o khng c bt cng tt my ON nu khng dng in qu ln c th lm chy thit b o.

Dng r c di 0.1 mA khng?

Yes: thc hin bc 4

No: thc hin bc 3.

3. Kim tra dng r m khng c b tit ch/chnh lu.

Tho gic ni b tit ch/chnh lu v kim tra li dng r.

Dng r c di 0.1 mA?

Yes: hng b tit ch/chnh lu

No: ngn mch b dy.

Cng tt my hng.

4. Kim tra cun sc my pht.

Tho np pha trc di.

Tho gic ni 3P ca my pht/cm bin CKP.

Kim tra in tr.

Cun sc: (trng mass): 0.2 1.0 ( 20oC/68oF).

Yes: thc hin bc 5.

No: cun sc hng. Thay stator my pht.

5. Kim tra in p np.

Ch :

Chc chn rng acquy iu kin tt trc khi kim tra.

Khng c tho acquy hay bt k cp no m khng bt cng tt my sang OFF. S ngn nga ny m bo thit b kim tra hay nhng b phn in khc khi h hng.

Cho ng c hot ng n nhit lm vic. Ngng ng c.

Dung ng h o in p acquy.

Ni ng h o tc ng c

Khi ng ng c o in p tc 5000 vng/pht.

Tiu chun: in p acquy < in p sc < 15.5V

Gi tr o c c nm trong gi tr chun khng?

Yes: acquy hng

No: thc hin bc 6.

6. Kim tra b tit ch/chnh lu.

Kim tra in p v in tr gic ni b tit ch/chnh lu.

Tho gic ni 6P ca b tit ch/chnh lu kim tra tip xc lng hay in cc b mn khng.

Nu in p acquy vt ra khi thng s k thut, kim tra in cc gic ni nh sau:

Mcin ccThng s k thut

Dy np acquy/trng (+) v mass (-)Trn acquy

Dy n cun scTrng v mass0.2 1.0 ( 20oC/68oF)

Dy massXanh dng v massThng mch

Kt qu kim tra c ng nh trn khng ?

Yes: b tit ch/chnh lu hng.

No: h mch cc dy lin quan

Ngn mch cc dy lin quan

Tip xc lng hay km

C. H THNG .

I. V TR H THNG

II. II.S H THNG

III. TRNH T TM KIM H HNG.

Motor khng quay1. Kim tra tiu chun

Kim tra nh sau:

Tnh trng acquy

Cu ch c b chy khng.

S vn hnh n phanh

Relay ngt n.

Nhng iu trn tnh trng tt hay khng?

Yes: thc hin bc 2

No: thay nhng b phn b hng.

2. S vn hnh relay .

Bt cng tt my ON.

Bp cn phanh v my.

Nu bn nghe ting click khi bt cng tt .

C nghe ting click khng?

Yes: thc hin bc 3

No: thc hin bc 5.

3. Kim tra motor .

Bt cng tt my OFF.

Tc dng in p acquy trc tip ln motor v kim tra s vn hnh. (Do c dng ln chy qua nn khng c s dng dy mng).

Motor c quay khng?

Yes: thc hin bc 4

No: kim tra motor

4. Kim tra thng mch relay

Kim tra thng mch relay nh sau:

Tho relay .

Ni cc dng acquy vi cc A relay v cc m vi cc B.

Kim tra thng mch cc C v D.

C v D thng mch khi c in p acquy v khng thng mch khi ngt in p

Thng mch hay khng?

Yes: - cp ni motor lng hay tip xc km.

in cc ca gic ni relay lng hay tip xc khng tt

Dy mass motor h mch.

H mch dy mu gia acquy v relay

H mch dy /trng gia motor v relay .

No: relay hng.

5. Kim tra mch in ECM

Bt cng tt my ON v kim tra n MIL.

n MIL c gi trng thi OFF khng?

Yes: kim tra dy ngun/mass ca ECM

No: thc hin bc 6

6. Kim tra cun dy relay Tho np che ng chnh bn phi.

Bt cng tt my OFF.

Tho gic ni 33P ca ECM.

Bt cng tt my ON.

o in p gia gic ni ECM vi mass.

Ni: s 33(vng/xanh dng (+)) - mass (-).

C in p acquy hay khng?

Yes: thc hin bc 7

No: gic ni lng hay tip xc km

H mch dy mu en gia relay v cng tt my.

H mch dy vng/xanh dng gia relay v ECM

7. Kim tra dy cng tt n phanh/cng tt .

Tho gic ni 33P ca ECM.

Ni tt cc trng/en ca ECM vi mass.

Bt cng tt my ON.

Bp cn phanh v bt cng tt v o in p gia gic ni 33P ca ECM vi mass.

Ni: s 29 (vng/xanh dng) mass.

C tn ti in p acquy khng?

Yes: thay ECM mi v kim tra li.

No: - gic ni lng hay tip xc khng tt.

H mch dy xanh dng/vng gia cng tt n phanh v cng tt .

Cng tt hng

H mch hay ngn mch dy vng/xanh dng gia cng tt v ECM

H mch hay ngn mch dy en/nu hay dy en gia cng tt n phanh v cu ch ph.

H mch hay ngn mch dy /vng gia cu ch ph v relay ngt n.

H mch dy /trng gia relay ngt n v cu ch chnh.

Motor quay ng c chm.

in p bnh yu.

Dy ni vi acquy tip xc km.

Dy ni vi motor tip xc km.

Motor hng

Dy ni mass acquy tip xc km.

Motor quay nhng ng c khng quay.

Motor quay ngc

Lp rp sai

Ni cc khng ng

Bnh rng pinion motor hng.

Relay ku click nhng ng c khng quay.

Trc khuu khng quay v ng c c vn .

D. N/NG H/CNG TT

I. V TR H THNG IN

II. KIM TRA MCH N.

1. n u/n ng h/n ui khng sang.

a. Tiu chun kim tra.

Kim tra nh sau:

n chy hay khng cng sut

Gic ni lng

Cng tt pha ct.

Nu bnh thng th kim tra nh sau:

b. Kim tra mch n

Tho gic ni 6P n u

Tho gic ni 6P b tit ch/chnh lu.

Bt cng tt pha ct n v tr Lo.

Kim tra thng mch cc dy mu trng gic 6P ca n u vi cc dy mu vng gic 6P ca gic b tit ch/chnh lu.

Bt cng tt pha ct n v tr Hi.

Kim tra thng mch cc dy xanh ca gic ni 6P ca n u v cc dy mu vng ca gic ni 6P ca b tit ch/chnh lu.

Nu thng mch kim tra nh sau:

c. Kim tra dy mass.

Kim tra thng mch dy xanh dng ca gic ni 6P ca n u vi mass.

Nu thng mch kim tra b tit ch/chnh lu.

III. N CNH BO NHIT NC LM MT.

1. Kim tra h thng

n bo nhit nc lm mt sang khi nhit nc lm mt cao hn nhit xc nh.

Trc khi kim tra th chc chn rng nhng b phn sau bnh thng:

H thng lm mt

Tnh trng acquy

Cu ch chy

Nhng n hin th khc.

Bt cng tt my ON v kim tra n bo nhit nc lm mt.

Khi ng c lnh th n khng sang.

Tho khoang hnh l

Tho gic ni 2P cm bin ECT.

Dung on dy ni ni tt cc cc cm bin ECT.

Ni: hng/trng xanh dng/cam

Bt cng tt my v kim tra n.

n s sang

Nu n sng khi ng c lnh, kim tra nh sau:

Kim tra ngn mch dy xanh dng nht/ gia ng h v ECM.

Kim tra ngn mch dy hng/trng gia cm bin ECT v ECM

Cm bin ECT

Kim tra ngn mch b n.

Nu ni ngn mch cm bin ECT m n khng sang, kim tra nh sau:

Kim tra h mch dy xanh dng nht/ gia ng h v ECM.

H mch cm bin ECT.

H mch mch n

Nu kim tra trn bnh thng, thay ECM mi v kim tra li.

IV. CM BIN MC XNG/NG H NHIN LIU

1. KIM TRA H THNG.

Khi nhin liu y nhng kim khng dch chuyn.

Trc khi kim tra h thng, kim tra nh sau:

Tnh trng acquy

Cu ch chy

S vn hnh ci.

Tho gic ni 5P cm bin mc nhin liu/bm xng.

Ni tt cc in cc ca gic ni.

Ni: vng/trng xanh dng/en.

Bt cng tt my ON, kim tra nu kim ng h dch chuyn v F.

Nu h thng bnh thng th kim dch chuyn.

Trong trng hp ny kim tra cm bin mc nhin liu.

Nu kim khng dch chuyn th kim tra nh sau:

Kim tra h mch hay ngn mch dy vng/trng gia cm bin mc xng/bm xng v ng h tc xe.

Kim tra h mch dy en gia gic ni 4P ca ng h tc xe v ng h nhin liu.

Kim tra h mch dy xanh dng/en v xanh/trng gia cm bin mc xng/bm xng v mass.

Kim tra h mch dy xanh dng/en v xanh/trng gia ng h o tc xe vi mass.

Nu bnh thng thay bng ng h o tc xe mi v kim tra li

2. KIM TRA CM BIN MC NHIN LIU.

o in tr gia cc in cc gic ni v tr y v ht.

Ni A B

V tr F: 6 10 .

V tr E: 90 100 Thay mi nu khng nu n vt ra thng s k thut.