BMW ignition, spark, ignition management

8/14/2019 BMW ignition, spark, ignition management

http://slidepdf.com/reader/full/bmw-ignition-spark-ignition-management 1/34

I+ #< D+: 03/11

%& * C7

9&' P%+

I+ M%%+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3#< "<+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3I %= I?= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4I C= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4%+< #?= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6K %=<= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

%?< . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8? I #?== . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

C<+=+ #=/$# %=< (H+ E) . . . . . . . . . . . . . . . . . . . . .10C<+=+ %=< (!55) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

' I*% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13I C= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17K C< . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18%+< #?= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

%+< #? D+== (H#I =) . . . . . . . . . . . . . . . . . . . . . . . . . . .21E =< D+== . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

%I B 12 06 10 !54 -=< F+?=, D+== I%&A . . . . . . . . . . . . . . . . . . . . . . . . . . .25%I B 12 11 10 !54, !54&, !55 -D+== < HD# H-<==?< F+?= . . . . . . . . . . . . . . . . . . . . . .33

I+ M%%+

$@= D+:



2I ++

I+ M%%+

M: A

P9': A

After completion of this module !ou ill be able to:

'<=+ =+< = < + ?= B =

#<< + <+< = +=?<

#<< + =+< = +=?<

I<< =+< +=?<= + <+ +==

'<=+ ==

D=< == = <



E<% * IPO * % I+ M%%+ =7

" + ?<== EC = I ++ ?= +?-+ =@<+ =. I += ? + < ++ = == <=. F< < + <+ += +== B &<+$< +?+= ? -.

P' * O%

I ++ <@= ?= +<= <?<@+ + << . B+= + ?=, EC +?+= +<= + =+< ?? @+ <?+ +@++ <+< <?=. & EC <= + <= =+<

?? ? =< D.

& EC += + @< <+ <+ . &= = == ?= + D<I %=, < == <<< += %+ I %= ($). $+ =+= <+= +@ =+<+ @?+ <?=.

& I C< = < EC (+ ). & EC +?-+ + += + + ?=:

B+< +;

A<+< #+ #=;

A< F ?;

A< &<+?<;

E C+ &<+?<;

C<+=+ #= / $#;

C+=+ #== (C< ID);

K %=<=;

*I + &?<+< , B= #<==?< = += ?=.

3I ++

I+ M%%+



& <?+ += +< @+. <+, @+ = + EC <+= =+ < =+?<+ + . = <? + +< @+ = <, EC <+= ? +=< =+?<+ .

& Ca*'%a P+&&+*/RPM =+= EC =+< < << += += <@ <+ +? <+. &= ? = ?= + < ?= < + aa*"/"a %" &$*&&+* &)-&*$. ? = ?, EC +@+ .

C =+< = < EC += + <+?< + <?< =+< ?. A <+ @< =< + + +< , - <+ + < = <+< <@ ? =+<.

=+< + +< , < = < <=?= = +@+ .

I + + + +< <+?< = ,

+@+ <? =+<< < +.

I+ =7 I97

& == ++ == ?== =@<+ ?= < ?=. #<< < = ? ?= =? += $#,< =, <+=+ =, +< +== + <+?< (+ + + +<)+ ?< ?<+< =, + = <==?<.

= == = +@ <+ =+ < + !G6 =.&< +< = < += = + + + @<==. & =+@ < < ?<+.

I+ C7

& @+ =? <?< ?< ?= +<= =< =< < =. & =< < <?= ?<+, ?<< + <+ @+ <+=. & C <?? <+< + =+< = === :

& C A== += <= =?+ < + <. "

= <+< , < + ?<= <. & =+< = < + <+ + ?<= <.

4I ++



& <+< <@= +< @+< I C $+ ( I) = +@+ CA% ?. & EC <-@= + <? + < <+< (C

&<+ 1) +@+ + F+ %+ <+==-<. & + ?<< =<? <+< = += =+?<+ < ? ? ++ . A< = =<+ <==, EC <<? <+< <? + +@+ F+ %+<+==<. & + ? ? <+< +== + ?= @+ =+< .

& @+ <+ =+< = =+< <? C &<+ 4 =+< ? (=?+ <).

& <+< + =+< = +< ?-?-, <<, =+< <?<= +<? =? (C &<+ 4+).

& @+ <+ =+< - = =+< <? C &<+ 4 =+< ? (=?+ <).

& <+< + =+< = +< ?-?-

, <<, =+< <?<= +<? =? (C &<+ 4+).

& EC ?== =. & @?+ = +< <+ =?+ < ().

& = +< <@ =@ + < <+< <+= <+<==, + + = = + +== ?+<=. & <+< +=+< <? < + @<=.

5I ++

Insulator Boot

Secondary

Winding

I*"3 E3(a*a&+*

1 C1 A;;*

2 I;=<: B<

3 #8: =

4 ECM F1 #< $:;1;<:5 #+: C1 G:=



% P9+7

& =+< ?= <? < ?=+<. & @+ +<= +<== +< + =+<

? < =@ < +@ <=. &=<+= + =+< = ?= +</? ?<.

& =+< ?= +< + < ?= +<+( < +=) = = =?+ < <== +</? ?<.

& =+< ?= ?= B E= +< = !GK. & ?= ?= + I<?< <. & < < = 0.6 . & =?+< = +=<=. & =+< ? += < < =<@ + <@ =+<. & << =+< ? < + =? ?=.

& I %= = < EC @+ Ca*'%a P+&&+*/RPMS"*+. I + =< +? = <=, EC +@+ <<= ? -< < + <. E <+ = ==.

& =+< ?= < !51 + !52K# <+ =+ += !52. H@<, !54?== + =+< ? < B=. & =+< ? = === +12 <+ <+== < 14 = !52 <@= +== << =++. & =+< ? = += + 12 = <?<= + =+ . & (=) += + + = +++== +<+ !54 < +.

I9 7 % '97 % % 7 67 % % 8 7 7+% %9, %7 % 1,200> F ++ % %9 % '-9'7 ''= &.

6I ++



K' 77

& ==< <=<= =<??<-< @<+=(). K ?= + ++

. & ++ < ==< + ==< DE ?<+=?<=. A<+,<@<<+ ?= <=== + ?< ?<<+ = < =. &= +<+?= <=== ?<+ +<= == - + << < ??+ .

%? ?= <=== +< <<< += + ?< += <=? = ?-+< ?< <+ + <. !<+ ?= +<== <? = +?= <==?< + <+?< <=, <=? =- ?-+< ?< . &= <?= + @= == 2000 /= + = ?< <+ ?= = +<. 30 /=.

C= +@< <+ ?:

I<+= <== <+ (.. ==)

H < +<

#< ? ?+ ($"!/"!)

H + +< + <+?<

& ==<= <+ < <. <+= < ?=

@= +< @< <+ =+= +< < EC. E==@@<+ += +?= EC <+< <+< += ==+<.

& ?< K ==<= @+< ; + 6 <= ?= (2), 8J= ?< (4) + 12J= = (6).

N: E<'77 '+ ; '%97 MIL 9%.

$ 7%+ ' 777, & 79 9 7'*'%." -++ ' 777 '% 79 7 97' 77 *%97 + *%'.

I* % *%9 7 ' ; 77(7), ECM %'%7 K' C % ; 7 + + % '7% &%7' 7-+ &%7 % % %9/779 % % *%9 ; &7.

7I ++



9'+& < =?< <<= <<?+< ?= + ?<= ?<+</=?<+< =. D?< = <==, +? ?=<==?< <+== < +<. 100 +< ? +? 200 +<. &= =?+ ?

+?= < = ?= +< =? += , <=?+ += < +<+<= + << ?-+< ?< < +?+ < .

%?< + + <<= <@= ==- = <@ ++, EC <?= < ?? ==?<. &<+< =?< = +?= @?+ < +<=. F? + < = =? =< < (3 6 =) <== =?<. A <<= +? = =< +? <.

8I ++



9I ++

M9 I+ P977? I #?== =?< =+< ?+ ?< =+< ?. & EC +@+ = 9 = (@+ ) < 720 <+=+ <@?.

& <<==@+@+ +=== ? =. A= =+<+= <, <+== +@+ = <?. = + =, ? - +@+ = <?<. &= ++=< + ++= +< ?.

& ? ?= == =?= :

E % >1350 $# (@+< <+?<)

& +@+ EC =<@= < + <+=</+< @? ?= (+<+ <?). A= < = , EC+@+= += +<+ + + + <+. & EC ?+@+ < ? < = + +? +<+ (<?).

Multipleignition

pulses fromeach coil



10I ++

C%7%* P7/RPM 7 (H%E**')

& <+=+ = ==< <@= EC +

5 @ =?+< +@ =+. & EC +?+= = ($#) + <+=+ = < + == <+.

& ==< = =? 12 @= < <= ?== + <? < EC.

A @ =+ + + @+?+ = ?? +=< + = +<. 20 <.

& < ? = + + +=?< =+ += = <+ ? += <+ += <@?= < =?=? +=. & + = =

+== + <+=+ = < ?< 1. & DE =<= <+=+ = <= = . + =?=? =+ <= <+=+ = 6.

E+ +== = ==+< < DE + ++ + ? = <?<=. & <@+ +=?< @+= (.. H L) = << @ =+< ?= .

'%7%* 7 77 7 %7 * %%7 '%7%* 7 7*7.

I*"3 E3(a*a&+*

A Electrons

1 Hall Module

2 Lines of magnetic force

3 Permanent magnet

4 Poer suppl!

5 Hall voltage



C$16+$7 S162 (N55)$0 =+<1 <0 ? +:;0< ;;: 1; 1<1+ < <0< <0 +:;0< ;;:;=; : <0 =<<1+ 1 ;<:<-;<8 =+<1 (M#A). $0 1 :>:; <+<11; :9=1: : <0 M#A =+<1. (M#A 1; < +=::< : 1 <0 %#.)

11I ++

I1'; E;3/$1$721

1 C+<:

2 D=;< ;

3 #;:



12I ++

NOTES

PAGE



13I ++

A +? =?<@ =? <= << ?= IIB < < = + +? <+< < =+< . I < = + +? <+< , =

=? ?: #< %? + (KL 15).

$==+ +<== + <+< ?= '@<=+A+< EC =.

I < = + +? =+< , = =? ?:

#<+< I.

E@+?+ %+< "== #+<=.

T%" F+((+&*$ a" E3a)(" + S"+*a4 O&((++" Pa"*(=? $+< I=<?= < +< @+<+= < +?+?<<):

&= = + <+ +< < <? + =.

!<+ C?= #<.

!<+ I + #+.

' I*%





15I ++

! %+< + L (% C<D=+)

D@ I C.

E@+?+ I + #+= ?<%? L+= (? C<= D=+).

D@ I C.

D+ #<== = =<+ H< +I + #+ (2):

L+ ?<.

D@ F? I<.

L C<==.

A; % %7 3 97 %7 %* = ;%7 7 ?OFF@7 &* 7''+ ECM. 7 ; %; 79**' ' DM-L 7. #%+ %= & 7 (9 3 -97) '%97+ %%+ ECM * 7 7'' 9+ 7 (%'+).

R% I79'7 79 & '79 * %%O7'7' P%7 9 %97 + 77.



16I ++

&= %+< I %=, ?=%+ & (%+< + &= C+)#90 88 6 127 050 / SWZ 12 7 050 &= <-@= + + =?<+ < IIB <+< +

=+< ++< +=.

O&7 7%*= '%9-7, + %+ 77 ; +9+!

& ?<< <? = < += ?<< <+< . = , ?<< ?= <+ @+?= ?< <==.

& = +< <:

#<+< ?<< <? .

I < +<==. %+< ?<< <? =+< ?.

%+< ?<+.

& = +< <? <:

%<-<? <+< = .

%+< ?.

L <+ < +<==.

D@ ?? =+=.

& a" *+ """:

%<+ +?= =? += = += < +<==.

%+<@< @+ <? +<+ =+< + ? <?+ <?< +?.

CATION!!!



17I ++

I* S))a4,

I %+< I + = & H (E==@ $==+ < I):

%+< #? G+ = L+< (< < B?<).

I<< H+ $+ %+< #?.

C<== = H (C+<, .).

I<<? %+< I C< < $==@ A+< B.

I %+< I + = & L (L $==+ < I):

%+< #? G+ = & %+ (=+ I=++).

I<< H+ $+ %+< #?.

C<== = & L.

+ L+ %+< I C< < $==@ B G<?.

I+ C7

& = B = +@ <= < < < + ?<+.#+<?+< +< ?= + < ? == =?< + - = +< ?. & <==+ = +<+ = <+ <? + ?. &= ? <= = =?+ + <=? +< + =+< ? +?= + =<.

& = ?= <@ < < ? ==.

=+ = @+@ ? <= ?= +== ?= =<@.

A< <@ = ?= + <+ <@ ? < < =+<? .

I = + +@ =+?<+ ? ?= <+.



18I ++

K' C

K C< += EC ?<<+@+ ?< + <

<+= <?. K C< = + <+?< =<+< + 35C + < = + + . &= =<+< += =+= < < + .

B+= < <<, EC -<= K %=<= +< + < + <+ () =+.

I =+ @+? = <=, EC = + <+<= (3) < + <

= <. &= <== = <+ 3 <= ? +==.& +@+ ++ <= ?= +++ + + .

I + +? = K %=<(=) < <?=, EC +@+= KC<. & = + =<@+@ += = ( <? <= +) + + +? =<. & +? I+< L ?-+ "BDII <<+ = +@.

& K %=<= =? = ?= IIB <:

F+? C=

%+?= D=+ - K C< (+@ / +@)

"== D=+ (L AC + - =)

W%"* &*a((&*$ K*+' S"*+:

D+ *+ )&3 %" (+a&+*! + E*$&*"Da)a$" &(( "(! & K %=<=?= + +<==. & K %=< =<< + = < <= 4 - 6.

D+ *+ +" &$%"* aa%&*$ b+(! -# <+ <+. &<? 20 .

D+ *+ *" &$%"* aa%&*$ b+(!A = ==< + @<+ <? +=+< =+ + .





20I ++

% P9+7

& %+< #?= =? = < << , + + <+ + =

<@+=.$< %<@ I<+ B?=:

%I B 12 01 05 H #<<+ I<?%+< #?/%+< #? A+ C+<

%I B 12 01 99 H #<<+ #+?%+< #?/%+< #? A+ C+<< << + + @=?+ =+< ? (= = ?=-, ?, .)

& %+< #?= =? << =+ + <? ?= %+&=:

% 12 1 200 &<? L<

% 12 1 171 %+< #? %

N 97 A 7 * % 7%%.



21I ++

% P9+ D%+77 (HPI +7)D? < =+< ? ? < , + @< ? =<+ + +?= == =+< ? ++. &= += =+< ? +== +<+ +< H#I =<@ <=. I<+ + =+< ?

+== + + == ? < +?=. %+< ? <+ <@+ += <? 45,000 = = =. & ?=<+= + ?= +=== =+< ? +==:

$0 ;8: 8= *> ;0?; : ?: 8<<:?1<0 @+;;1> +<: ?: : 1;=<:.

$0 ;8: 8= *> ;0?; : ?: 8<<:: ;8: 8= ?1<0 010 1. #8: 8= 1;= : :8+<.

$0 ;8: 8= *> ;0?; :;1 <0+<: ;1 ?01+0 += * 11+<1 = ;8: 1>:;1.

$0 ;8: 8= *> ;0?; :;1 <0+<: ;1 <0 1;=<:;. $01; += ; * 11+<1 = ;8:1>:;1.



22I1<1 M<

E+ M7* D%+77

E =< = <=? ?= < < <=. & +?=-= E =< +< =@ ? + <? =?-===.

C=< +<= += + ++ += + I%&A = , << +? = += = + +? < += <<+.F &= ? += =+ I%&A.

IGNITION S#STEMCOMPONENT POSSIBLE CONDITION TEST CORRECTION

S$5. P/8*: B I6++< ;8 8= 6;< #+6 B ++< ;8 8=B E+< 8 +; < ;5 I6<6 B "8+ 6+;;B E+<(;) 5;;6 B #?8 ?< 6< +6B O = = ;8 8=B C5+ 6;=<6 ++

S21'$5< B '< 5;< = < ?< 6<<6. B C+ ?< 6;;, 8, 8+58: (51*, B H ;;<6+ = < +;6. B C+ ;;<6+ >=, 8+M73-$, 5225)

I*121 B #+6/5 C+=<; 86 ;<. #+6 B I6;8+< 6 8+ 6+;;C2/(6): B H=;6 ++, 5. 6 5 B #?8 ?< 6< +6

I*121 C2/ B ? ;=88, 5 +6< 6 5 B L 86, ; +66+<,& E1*1 =6 (;=6< ;6) ++=<; 58. I6<6 & +;6, +;; *+ =<H$5166 $5 4A - 86; (; +6; 6<6 =6 C211256 *+ ;< ECM 6 M97 6 6? +;).

M;=56<; B D<56 +<> +6<6,8 8+.

B A ;+6 6<6 ;+;+8 ;8 8>; >< 65<6*=< < 6<6 ;;<5; +6<6.

B F? < 8+=<6; 6 "E 12 00 I6;<=+<6; ?6 6

< 6<6 ;;<5.

B %; < ?6 ;+8 8<<6; ; =6 6<6 ;;<5

6;;.

E>=<6 ;+6 ;6 58<= < ;8.

1. N5 I6<6 < : S3$5. P/8* 6 OK 2. L? I6<6 < : G$3 722 60$// ('&79) 3. H I6<6 >< 8: G$3 722 /$5* ('&79)

NORMALCOMBSTION

PERIOD

ONG COMBSTIONPERIOD (SMALL GAP)

HORT COMBSTIONPERIOD (LARGE GAP)



23I1<1 M<

ENGINE MECHANICAL S#STEMS

COMPONENT POSSIBLE CONDITION TEST CORRECTION

P67216, H 1 81;< +:?, :1(;) *:, I !=1< - "=0 "=- C::+< +1<1 ;R1*6, >>(;) < ;<1, >>(;) *<, 1 :;<. :9=1:.$/96, >> ;8:1(;) *:, +;0< * C1: +8:;;1 &C$06+$7: +:+, <+. ? <;<;.

H<'$8/ HA 1 *: :;<:1+< : *+. I !=1< - "=0 "=- A?; +;1:$/9 E1 1 8:;;=: *=1; =8 < ;?. 1 :;<. +01+ +-A78$72 I1707717 M6 F$8/7 - N< L1;< < HA 8<; ?0(HA): C=::< :;<. C0+ O1 :;;=: 1;1 1;1:.

HA *11/;<1+1 1 *:. C1: ? I;8+< : ;+:1.

$880 %<: >+== ; +=;1 I !=1< - "=0 "=- C::+< +1<1 ;L$6: =/$1> 8:<1 +1<1. ;;1* 1 :;<. $;< : >+== :9=1:.

=E;669 M;78 D9$721> ; 8: "81: I;<:. #I B=< +;. =C$1$6 17/$721>.

I<:8:< A. & M=<18 8<<1 >=;

FEL QALIT#, DELIER#, INjECTION & EAPORATIE S#STEMS


F8/ (48$/7<): C<1< =. C = ;;<, :8+ =.(?<:, <0: +*=;<1*).

F8/ D/9<: F= 8=8 1>: 8:;;=: ?, C0+ = D<:1 :;<:1+<1/? :=+<1,:;<:1+<1 1 = 1 < = :1 : 8:;;=: & :8+ +8< ; +;;:.:=1 ;; >>. >=. I<:8:< A1<1> M=<181+<1>

F= 1<: :;<:1+< (+). C0+ = 8<<1 >=;. L? = 1 <. 8=8 8?:

:=

R8111* L266 > ;<=+ 1 ; +1:+=1< 8;1<1. C0+ >> D1;8 1;1; :9=;<; 1 DI#8=;$/9: <;< >> : 8:8: =+<1, :8-

+ >> ; +;;:.

F8/ I1-726: L1 = 1+<: 81< ;<; +=; $1 :;< & C0+ 1+<:; : .:1+0 1 ;<:<; ?1<0 0< *1< ;<<=; 8. #?8 ;=;8+< 1+<: ?1<0 <0:<8:<=:;. #+ I ;+8 +1:.

8<<:. B+ (1:<) 1+<:(;). I;8+< 1+<:, :8+ 1 +;;:.

F8/ P668 "=<: +<1>, +=;; =+<=<1 F= 8:;;=: C0+ 1 = 8:;;=: >= ?1<0R*8/$72: 1 <0 1+< 9=<1< = +=;1 1 8:<1 =: >:1 ;8;.

1@<=: 8<<1 =<;.

E9$32$79 D+<1> >8:<1> ;;< >< DI#8=; ;<<=;, C0+ <0 = < +1<1 ><S<670: +=;1 = < +8; = . E>8 <;< 1.

;<:><1. ?1<0 8:;;-=: <,8=: >>=+. <;<.

C0+ F:;0 A1: > $LE E36>01+; : LD/DM $L 1<: O"" >01+; : 8:8: ;;<*:<01.



24I1<1 M<

IMPLASIBLE ECM CONTROL FNCTION ORSENSOR INPT SIGNALS


C$16+$7 I8=;1* ;1 : 1;1: <+<1. I#$A 8:;< D<:1 +<1> ;;: :P26721 I+:< ?0 ; : ;=:<. 1+:< ?0 :8+.S162 2 (1<: M44, M52 M54,I1017 @<: M62 & M73)."+/: A1: 8 *<? ;;: ?0.

N<1+* < 010: :8.

C$7$/<67 E@+;;1> @0=;< *+ 8:;;=: I#$A 8:;< D<:1 +<;< +1<1, :8+D$0$*': (* ;8+11+ =< 8:;<, : ;=:< : :81: ; +;;:.

<1+* =: 0> @010 :8). ;;:.

B+ 8:;;=: <;< 8: #I B ?1<0 #8+1 $.

O;<*1 E@+;;1> 1@<=: >1<1, M1<: #?8 ;;: : <0: * (1 88-S162: 3266%/ 9$880 /$6. @ 1+*) ; 1 =< <:;:; <

;;: <0: *.;1 >1DI# 8:;<.

E1*1 I<: +<: = =<. C0+ =< H10 =1 *=< =;< * +;1:.C2172/ :.M2'8/ M1;1: "8::1. ": < #I B C0+ M/: : - :8::

"+1 '$*1261* $ M65 $8/7 &2', R00%5:

=M6> 6 $86' %< $ '7 1 7+ 171$/ 20%86721 1*1 2 $ '7 1

7+ 2172/ 2 7+ 1*1 23$721.

=M6> 6 7+ 68/7 2 0323 20%86721 (9$$721 %71 </1'6) $6

0$68' $7 7+ $16+$7 '8 72:

- E1 +01+ +<;; *:, ?:, : 18:8: <:+;.

- E@+;;1> 1@<=: >1<1; 1: (>+== ;), = <0 +8<; <0< 1>:

1:/= 1< <0 +*=;<1 +0*:;.

- F=< 11<1; 8:1:, ;+: 1+=1 ;8: 8=;.

- F=< @0=;< ?; +<1 *+ 8:;;=:.

- $:+ 8:<:;; ECM 8::1.

A M6 $8/7 2'(6) 6 7+ =6<03720> 2 $ $8/7< 1387 2 323 20%86721.

"+1 '$*1261* $ 06, 9 7+ +$76 72 $6667 <28 1 1'1* 7+ $8/7<

1387.





Page 2

ExitCreate and submit TC-Case, where applicable

Recheck fault memory after test drive; If clear, return car to customer

Any

misfire faults

stored?

Is this really the symptom

described?

Contact TC

No

Yes

Check Symptom

Return to Page 1

NoYes

Leaking

detected

In case of this leaking injector symptom, make surethat:

Check DME I-Level go to No. 4

Note: It needs elevated temperatures and high

engine loads to evaporate/burn fuel in exhaust

system

*Submit TC case for injector replacement. Determine thecylinder affected by misfire (see misfire fault code) and

Environmental conditions

Note:

If only one cylinder with misfire occurs per bank

Replace just one injector

If more than one Cylinder with misfire occurs in the same

bank Check misfire frequencys (Environmental

Conditions) Replace the injector with the highest

frequency of misfires per bank

When replacing injectors, make sure that:

Injector calibration is done (follow SIB 12 26 08)

Clear all DME adaptations

Swap ignition coil and

spark plug of misfiringcyl. with OK cylinders;

Does

misfire follow

the ignition

coil?

No

Injector Part

Number

Let engine cool down below 40°C / 100°F

Disconnect low pressure side from high

pressure side

Check EKP function:

p_fuel(LP) > 4.75bar while EKP is running; if

not: follow B1214_DI_KDR

residual pres. of >3.75bar 10min after EKP

was deactivated

Connect low pres. side and high pres.

side

Activate EKP

Check residual pressure in HP

system: read HP fuel sensor value;

>3.75bar 10min after EKP

deactivated? If yes: injectors have

no leakage.

Check okayCheck

not okay

No

Followrecommendations of

test plan“

YES

Yes

Date of

production before10/2008

No

Yes

*Submit TC case for injector replacement.

If only one misfire occurs per bank Replace

just one injector

If more than one misfire occurs in the same bank

Replace all 3 injectors of that bank;

If three or more cylinders misfire Replace all 6

injectors

Symptom is

exhaust has a „strong fuel smell“

in combination with „dense white

smoke upon warm start up“ or

„wet/fouled spark plugs“

Replace ignition coiland spark plug

accordingly

26I ++

I B 12 06 10 N54 - M7* F%97, D%+77 ; IA







Page 5

ExitCreate and submit TC-Case, where applicable

Recheck fault memory after test drive; If clear, return car

to customer


described?

Is 29E0, 29E1

fault code stored?

Contact TC

No

Yes

Check environmental

conditions of fault code:

Is it too Rich or too Lean?

Too Rich Too Lean

Readaptation of the DME

Test Drive is needed!

Car must be at operating temperature / warm

Drive vehicle 50-60mph with 2000-2500rpm for at least 3min (use

manual shift, if needed)Perform at least 2-3 drive cycles if possible

Let vehicle idle for about 5min

Recheck mixture adaptation values (short test GT1)

Check Fuel Quality

Check alcohol content following SIB

13 04 06; In case >15% check fuel

lines and connections for corrosion

Refuel the car with known good gas

Clear DME adaptations (doublecheck

with short test GT1)

Check Fuel Supply

Check crankcase ventilation pressure

Check fault memory (history) for anyindications of lean conditions, 29F2,

29DC, 29F1, etc.

Inspect the fuel tank for contaminationlike sand, grit, cloudy fuel, etc.; if yes

drain the fuel system and *Submit TC

case for replacement, if needed

Yes

DC_MIX_FUEL

Check Symptom

Check for possible rich conditions

Visually check monoliths (borescope

if available), whether they are

mechanically deteriorated; check

fault memory for 29F4, 29F5„catalyst conversion“

Continue following DFT – Leaking

Injector on Page 2

No

Problem not fixed

DC_MIX_RICH

Return to Page 1

DC_MIX_SUP

Check exhaust side on that bank

Smoke the exhaust system; search

for cracks/leakages and replace part

if needed Are O2 sensors torqued correctly;

*Submit TC case for replacement, if

needed

Problem fixed?

Check FASTA

data!

DC_MIX_EXH

29I ++

I B 12 06 10 N54 - M7* F%97, D%+77 ; IA



Page 6

ExitRecheck fault memory after test drive; If clear, return car

to customer


described?No

Yes

Check Symptom

Return to Page 1

Symptom is

„single misfire fault

code stored

in DME“

Clear all DME adaptations via

service function path!

Update DME I-Level

Up to Exx-10-03-5xx or newer

30I ++

I B 12 06 10 N54 - M7* F%97, D%+77 ; IA



Page 7

ExitCreate and submit TC-Case, where

applicableRecheck Fault Memory after cold start;

If clear, return car to customer

In case of rough running @ cold make sure to:

Check spark plugs; are they wet or excessively sooted?

Check injector calibration values; follow SIB 12 26 08

Update DME to latest I-Level


described?

Is the

vehicle running rough

ONLY at cold start?

Does it run smooth @

warm?

No

Are

misfire faults

set in DME?

Yes

No

Readaptation of the DME Test Drive is needed!

Car must be at operating temperature / warm

Drive vehicle 50-60mph with 2000-2500rpm for about 3min (use

manual shift, if needed)

Perform at least 2-3 drive cycles if possible

Let vehicle idle for about 5min

Let car sit over night and start the car cold!!

Check Symptom

Check environmental

conditions of misfire faults:

Is there a misfire fault with

engine temperature >50°C?

No

YesYes

Problem

fixed?

No

Yes

Continue with page 6,

following DFT – rough

running @ warm engine

Contact TC

31I ++

I B 12 06 10 N54 - M7* F%97, D%+77 ; IA





Anyfault entries in the

EKP module?

EKP function check according toISTA EKP test modules; *submit TC

case for EKP replacement ifnecessary

Check for open electrical circuit between rail sensor and DME; *submit TCcase for rail sensor replacement if necessary;

Note: default value appears as 265bar, when sensor deffective / open circuit

0x2BF4or 0x2BF5or 0x2BF8

Check HP sensor; make sure car was sitting more then 15min;follow diagnostic request to compare LP to HP sensor values; use manual fuel pressure

gauge for LP side. Values must not differ more the +/-3 bar; replace HP sensor if necessaryImportant note: in case the HP sensor value is higher then 9bar, release the pressure byslightly loosening the connection between the injector and the rail and repeat the above

check again; in case of repeated failure *submit TC case for HP sensorreplacement

0x2BE5

or 0x2BE9or 0x2BEEor 0x2C01or 0x2BDBor 0x2BDC

or 0x2BDDor 0x2BE6or 0x2BEDor 0x2C00

Yes

No

Yes

Yes

No

Havecomponents

been

replaced?

No

0x2BD9or 0x2BDAor 0x2BF2

or 0x2BF3

EKP Module

DMEHigh Pressure

(HP) System

Yes

„long crank“ complaintwithout fault entry,

possibly with info entry 0x2BDE,0x2BEF, 0x2BF0

Check battery voltage;check starter;

check crank shaft andcamshaft sensors;

repair if needed

No Repair was needed at battery, starter, crankshaft or camshaft sensors

DC_HDP_2FBF

DC_OTHER_LC

DC_EKPM

DC_HPS_29E2

DC_HPS_29F1

DC_HDP_VCV

For Your Information

Definition of the „long crank“complaint:

the engine is cranking up to about

3-4 seconds, before it starts quickly

LP = Low Pressure SystemHP = High Pressure System

Where to find the HDP’sProduction and Serial Number

Page 1

Information:CCC message „fuel pump defective“

or engine does not run at all

0x2C3Dor 0x2C3E

or 0x2C3F

Check for open electrical circuit between HDP and DME;replace components if necessary

*Submit TC case for HDPreplacement

Yes

0x2BEC

OK

Yes

DC_HDP_HARNESS

No

No

No trouble

found

Create and Submit TC-Casewhere applicable. ReadaptDME and perform test drive

on page 1. Recheck faultmemory after test drive, if

clear, return car to customer

Fuel tanklevel at fault entry

below 5 liters?

No

Add fuel, deletefault memory

Yes

Check fault memory

No

Ignore fault entry,delete fault memory

SI B12 11 10

EKP function check; follow ISTA test module;*submit TC case for EKP replacement if necessary

DC_EKP

*Submit TC case for HDP

replacement

OK

Yes

EKP function check; follow ISTA test module;*submit TC case for EKP replacement if necessary

OK

DC_EKP

Yes

*Submit TC case for HDPreplacement

OK

*Submit TC case for HDP

replacement

N55 E8x, E9x, E7x has no low pressure sensor

Rail PressureSensor

HDP Electric

After EngineOff

Rail pressuredeviation

Rail PressureSensor

Plausibility

33I ++

I B 12 11 10 N54, N54, N55 - D%+77 * HDP H+-779 F%97



Documents

BMW ignition, spark, ignition management